{"id":30196,"date":"2025-08-28T12:50:09","date_gmt":"2025-08-28T05:50:09","guid":{"rendered":"https:\/\/dps.media\/check-thong-tin-ten-mien-huong-dan-quan-ly-va-bao-mat-domain\/"},"modified":"2025-08-28T12:50:20","modified_gmt":"2025-08-28T05:50:20","slug":"check-domain-information-management-guide-and-domain-security","status":"publish","type":"post","link":"https:\/\/dps.media\/en\/check-domain-information-management-guide-and-domain-security\/","title":{"rendered":"Check Domain Information: Guide to Managing and Securing Domains"},"content":{"rendered":"<?xml encoding=\"utf-8\" ?><p><!-- DNS Bulk Lookup Widget - DPS.MEDIA Branded v\u1edbi CSS Isolated -->\r\n<\/p><div id=\"dnsBulkWidget\"><\/div><script>\r\n(function(){\r\n  const root = document.getElementById('dnsBulkWidget');\r\n  if (!root) return;\r\n\r\n  const POPULAR = ['A','CNAME','MX','NS','TXT'];\r\n  const RECORDS = ['ALL', ...POPULAR];\r\n  const TYPE_CODE = { A:1, CNAME:5, MX:15, NS:2, TXT:16 };\r\n\r\n  \/\/ T\u1ea1o CSS c\u00f4 l\u1eadp v\u1edbi prefix\r\n  const widgetStyles = `\r\n    #dnsBulkWidget {\r\n      all: initial !important;\r\n      font-family: system-ui, -apple-system, \"Segoe UI\", Roboto, Arial, sans-serif !important;\r\n    }\r\n    \r\n    #dnsBulkWidget *,\r\n    #dnsBulkWidget *::before,\r\n    #dnsBulkWidget *::after {\r\n      box-sizing: border-box !important;\r\n      margin: 0 !important;\r\n      padding: 0 !important;\r\n      border: none !important;\r\n      background: none !important;\r\n      outline: none !important;\r\n      text-decoration: none !important;\r\n      list-style: none !important;\r\n      font: inherit !important;\r\n      color: inherit !important;\r\n      vertical-align: baseline !important;\r\n      line-height: normal !important;\r\n    }\r\n\r\n    \/* Container ch\u00ednh *\/\r\n    #dnsBulkWidget .dns-container {\r\n      max-width: 1000px !important;\r\n      margin: 24px auto !important;\r\n      padding: 0 !important;\r\n      border: 1px solid #e5e7eb !important;\r\n      border-radius: 16px !important;\r\n      font-family: system-ui, -apple-system, \"Segoe UI\", Roboto, Arial, sans-serif !important;\r\n      overflow: hidden !important;\r\n      box-shadow: 0 10px 25px -5px rgba(21,21,119,0.1), 0 4px 6px -2px rgba(21,21,119,0.05) !important;\r\n      background: #ffffff !important;\r\n    }\r\n\r\n    \/* Header *\/\r\n    #dnsBulkWidget .dns-header {\r\n      background: linear-gradient(135deg, #151577 0%, #1e1e7a 100%) !important;\r\n      padding: 20px !important;\r\n      color: white !important;\r\n      position: relative !important;\r\n      overflow: hidden !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-header-bg1 {\r\n      position: absolute !important;\r\n      top: -20px !important;\r\n      right: -20px !important;\r\n      width: 100px !important;\r\n      height: 100px !important;\r\n      background: rgba(255,255,255,0.05) !important;\r\n      border-radius: 50% !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-header-bg2 {\r\n      position: absolute !important;\r\n      bottom: -30px !important;\r\n      left: -30px !important;\r\n      width: 80px !important;\r\n      height: 80px !important;\r\n      background: rgba(50,181,97,0.15) !important;\r\n      border-radius: 50% !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-header-content {\r\n      position: relative !important;\r\n      z-index: 1 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-header-top {\r\n      display: flex !important;\r\n      align-items: center !important;\r\n      justify-content: space-between !important;\r\n      margin-bottom: 8px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-header-left {\r\n      display: flex !important;\r\n      align-items: center !important;\r\n      gap: 12px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-icon {\r\n      width: 40px !important;\r\n      height: 40px !important;\r\n      background: linear-gradient(135deg, #32b561, #28a555) !important;\r\n      border-radius: 12px !important;\r\n      display: flex !important;\r\n      align-items: center !important;\r\n      justify-content: center !important;\r\n      font-size: 20px !important;\r\n      font-weight: bold !important;\r\n      color: white !important;\r\n      box-shadow: 0 4px 8px rgba(50,181,97,0.3) !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-title {\r\n      margin: 0 !important;\r\n      font-size: 20px !important;\r\n      font-weight: 700 !important;\r\n      letter-spacing: -0.5px !important;\r\n      color: #fff !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-subtitle {\r\n      margin: 0 !important;\r\n      font-size: 13px !important;\r\n      opacity: 0.8 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-brand {\r\n      text-align: right !important;\r\n      font-size: 12px !important;\r\n      opacity: 0.7 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-brand-name {\r\n      font-weight: 600 !important;\r\n      color: #32b561 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-desc {\r\n      margin: 0 !important;\r\n      font-size: 13px !important;\r\n      opacity: 0.9 !important;\r\n      line-height: 1.4 !important;\r\n    }\r\n\r\n    \/* Main Content *\/\r\n    #dnsBulkWidget .dns-main {\r\n      padding: 20px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-main-layout {\r\n      display: flex !important;\r\n      flex-direction: column !important;\r\n      gap: 16px !important;\r\n      margin-bottom: 16px !important;\r\n    }\r\n\r\n    \/* Input Section *\/\r\n    #dnsBulkWidget .dns-input-section {\r\n      position: relative !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-textarea {\r\n      width: 100% !important;\r\n      padding: 12px !important;\r\n      border: 2px solid #e5e7eb !important;\r\n      border-radius: 12px !important;\r\n      resize: vertical !important;\r\n      font-family: monospace !important;\r\n      font-size: 13px !important;\r\n      box-sizing: border-box !important;\r\n      transition: border-color 0.3s !important;\r\n      background: #fafbfc !important;\r\n      color: #374151 !important;\r\n      min-height: 120px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-textarea:focus {\r\n      outline: none !important;\r\n      border-color: #151577 !important;\r\n      box-shadow: 0 0 0 3px rgba(21,21,119,0.1) !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-count {\r\n      position: absolute !important;\r\n      top: 8px !important;\r\n      right: 12px !important;\r\n      background: rgba(21,21,119,0.9) !important;\r\n      color: white !important;\r\n      padding: 4px 8px !important;\r\n      border-radius: 6px !important;\r\n      font-size: 11px !important;\r\n      font-weight: 500 !important;\r\n    }\r\n\r\n    \/* Controls *\/\r\n    #dnsBulkWidget .dns-controls {\r\n      display: flex !important;\r\n      flex-direction: column !important;\r\n      gap: 12px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-label {\r\n      display: block !important;\r\n      font-size: 13px !important;\r\n      font-weight: 600 !important;\r\n      color: #151577 !important;\r\n      margin-bottom: 8px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-types {\r\n      display: flex !important;\r\n      flex-wrap: wrap !important;\r\n      gap: 6px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-type-btn {\r\n      padding: 8px 14px !important;\r\n      border: 1px solid #cbd5e1 !important;\r\n      border-radius: 10px !important;\r\n      background: #fff !important;\r\n      cursor: pointer !important;\r\n      font-size: 12px !important;\r\n      font-weight: 500 !important;\r\n      transition: all 0.3s !important;\r\n      color: #374151 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-type-btn:hover {\r\n      border-color: #151577 !important;\r\n      color: #151577 !important;\r\n      transform: translateY(-1px) !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-type-btn.active {\r\n      background: linear-gradient(135deg, #151577, #1e1e7a) !important;\r\n      color: #fff !important;\r\n      border-color: #151577 !important;\r\n      box-shadow: 0 4px 12px rgba(21,21,119,0.25) !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-type-btn.active:hover {\r\n      color: #fff !important;\r\n      transform: translateY(-1px) !important;\r\n    }\r\n\r\n    \/* Actions *\/\r\n    #dnsBulkWidget .dns-actions {\r\n      display: flex !important;\r\n      flex-wrap: wrap !important;\r\n      gap: 12px !important;\r\n      align-items: end !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-delay-section {\r\n      flex: 1 !important;\r\n      min-width: 140px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-delay-label {\r\n      display: block !important;\r\n      font-size: 12px !important;\r\n      color: #151577 !important;\r\n      font-weight: 500 !important;\r\n      margin-bottom: 4px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-delay-input-group {\r\n      display: flex !important;\r\n      align-items: center !important;\r\n      gap: 6px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-delay-input {\r\n      width: 70px !important;\r\n      padding: 6px 8px !important;\r\n      border: 1px solid #cbd5e1 !important;\r\n      border-radius: 8px !important;\r\n      font-size: 12px !important;\r\n      transition: border-color 0.3s !important;\r\n      background: #fff !important;\r\n      color: #374151 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-delay-input:focus {\r\n      outline: none !important;\r\n      border-color: #151577 !important;\r\n      box-shadow: 0 0 0 3px rgba(21,21,119,0.1) !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-delay-unit {\r\n      font-size: 12px !important;\r\n      color: #64748b !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-action-buttons {\r\n      display: flex !important;\r\n      gap: 8px !important;\r\n      flex-wrap: wrap !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-btn {\r\n      padding: 12px 20px !important;\r\n      border: none !important;\r\n      border-radius: 10px !important;\r\n      cursor: pointer !important;\r\n      font-weight: 600 !important;\r\n      font-size: 13px !important;\r\n      white-space: nowrap !important;\r\n      transition: all 0.3s !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-btn-primary {\r\n      background: linear-gradient(135deg, #151577, #1e1e7a) !important;\r\n      color: #fff !important;\r\n      box-shadow: 0 4px 12px rgba(21,21,119,0.3) !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-btn-primary:hover {\r\n      transform: translateY(-1px) !important;\r\n      box-shadow: 0 6px 20px rgba(21,21,119,0.4) !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-btn-secondary {\r\n      border: 2px solid #dc2626 !important;\r\n      background: #fff !important;\r\n      color: #dc2626 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-btn:disabled {\r\n      background: #6b7280 !important;\r\n      cursor: not-allowed !important;\r\n      box-shadow: none !important;\r\n      transform: none !important;\r\n    }\r\n\r\n    \/* Status Bar *\/\r\n    #dnsBulkWidget .dns-status-bar {\r\n      display: flex !important;\r\n      gap: 10px !important;\r\n      flex-wrap: wrap !important;\r\n      align-items: center !important;\r\n      margin-bottom: 16px !important;\r\n      padding: 12px !important;\r\n      background: linear-gradient(90deg, #f8fafc, #f1f5f9) !important;\r\n      border-radius: 12px !important;\r\n      border: 1px solid #e2e8f0 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-btn-small {\r\n      padding: 8px 14px !important;\r\n      border-radius: 8px !important;\r\n      cursor: pointer !important;\r\n      font-size: 12px !important;\r\n      font-weight: 500 !important;\r\n      transition: all 0.3s !important;\r\n      background: #fff !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-btn-copy {\r\n      border: 1px solid #32b561 !important;\r\n      color: #32b561 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-btn-copy:not(:disabled):hover {\r\n      background: #32b561 !important;\r\n      color: white !important;\r\n      transform: translateY(-1px) !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-btn-copy.success {\r\n      background: linear-gradient(135deg, #32b561, #28a555) !important;\r\n      color: #fff !important;\r\n      border-color: #32b561 !important;\r\n      box-shadow: 0 4px 12px rgba(50,181,97,0.3) !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-btn-clear {\r\n      border: 1px solid #cbd5e1 !important;\r\n      color: #374151 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-btn-clear:hover {\r\n      border-color: #151577 !important;\r\n      color: #151577 !important;\r\n      transform: translateY(-1px) !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-status-right {\r\n      flex: 1 !important;\r\n      min-width: 120px !important;\r\n      display: flex !important;\r\n      align-items: center !important;\r\n      justify-content: end !important;\r\n      gap: 12px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-progress {\r\n      display: none !important;\r\n      background: #e2e8f0 !important;\r\n      border-radius: 10px !important;\r\n      height: 8px !important;\r\n      width: 120px !important;\r\n      overflow: hidden !important;\r\n      min-width: 80px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-progress-bar {\r\n      height: 100% !important;\r\n      background: linear-gradient(90deg, #151577, #32b561) !important;\r\n      width: 0% !important;\r\n      transition: width 0.3s !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-status {\r\n      font-size: 12px !important;\r\n      color: #151577 !important;\r\n      font-weight: 600 !important;\r\n      text-align: right !important;\r\n    }\r\n\r\n    \/* Error Display *\/\r\n    #dnsBulkWidget .dns-error {\r\n      display: none !important;\r\n      background: linear-gradient(135deg, #fef2f2, #fee2e2) !important;\r\n      border: 2px solid #fca5a5 !important;\r\n      color: #991b1b !important;\r\n      padding: 12px !important;\r\n      border-radius: 12px !important;\r\n      margin-bottom: 12px !important;\r\n      align-items: center !important;\r\n      gap: 10px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-error-icon {\r\n      font-size: 18px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-error-text {\r\n      font-weight: 500 !important;\r\n    }\r\n\r\n    \/* Results *\/\r\n    #dnsBulkWidget .dns-results {\r\n      overflow: auto !important;\r\n      max-height: 60vh !important;\r\n      border: 2px solid #e5e7eb !important;\r\n      border-radius: 12px !important;\r\n      background: #fafafa !important;\r\n      min-height: 120px !important;\r\n      display: flex !important;\r\n      align-items: center !important;\r\n      justify-content: center !important;\r\n      color: #64748b !important;\r\n      font-style: italic !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-empty-state {\r\n      text-align: center !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-empty-icon {\r\n      font-size: 32px !important;\r\n      margin-bottom: 8px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-empty-text {\r\n      margin-bottom: 4px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-empty-subtext {\r\n      font-size: 11px !important;\r\n      color: #9ca3af !important;\r\n    }\r\n\r\n    \/* Table - Tr\u00e1nh d\u00f9ng th, td g\u1ed1c *\/\r\n    #dnsBulkWidget .dns-table {\r\n      width: 100% !important;\r\n      border-collapse: collapse !important;\r\n      font-size: 12px !important;\r\n      background: #fff !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table thead {\r\n      position: sticky !important;\r\n      top: 0 !important;\r\n      background: linear-gradient(135deg, #151577, #1e1e7a) !important;\r\n      z-index: 1 !important;\r\n      color: white !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-header {\r\n      padding: 12px 15px !important;\r\n      font-weight: 600 !important;\r\n      font-size: 12px !important;\r\n      text-align: left !important;\r\n      background: inherit !important;\r\n      color: inherit !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-header.center {\r\n      text-align: center !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table tbody .dns-table-row:nth-child(even) {\r\n      background: #f8fafc !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table tbody .dns-table-row:nth-child(odd) {\r\n      background: #ffffff !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-cell {\r\n      padding: 10px 15px !important;\r\n      border-bottom: 1px solid #f1f5f9 !important;\r\n      font-size: 12px !important;\r\n      word-break: break-all !important;\r\n      background: inherit !important;\r\n      color: inherit !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-cell.center {\r\n      text-align: center !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-cell.type {\r\n      font-weight: 600 !important;\r\n      color: #151577 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-cell.name {\r\n      font-family: monospace !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-cell.ttl {\r\n      font-family: monospace !important;\r\n      color: #32b561 !important;\r\n      font-weight: 500 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-header-row {\r\n      display: flex !important;\r\n      background: linear-gradient(135deg, #151577, #1e1e7a) !important;\r\n      color: white !important;\r\n      position: sticky !important;\r\n      top: 0 !important;\r\n      z-index: 1 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-row {\r\n      display: flex !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-header:nth-child(1),\r\n    #dnsBulkWidget .dns-table-cell:nth-child(1) {\r\n      flex: 2 !important;\r\n      min-width: 120px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-header:nth-child(2),\r\n    #dnsBulkWidget .dns-table-cell:nth-child(2) {\r\n      flex: 0 0 80px !important;\r\n      text-align: center !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-header:nth-child(3),\r\n    #dnsBulkWidget .dns-table-cell:nth-child(3) {\r\n      flex: 1.5 !important;\r\n      min-width: 100px !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-header:nth-child(4),\r\n    #dnsBulkWidget .dns-table-cell:nth-child(4) {\r\n      flex: 0 0 60px !important;\r\n      text-align: center !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-table-header:nth-child(5),\r\n    #dnsBulkWidget .dns-table-cell:nth-child(5) {\r\n      flex: 2.5 !important;\r\n      min-width: 150px !important;\r\n    }\r\n\r\n    \/* Footer *\/\r\n    #dnsBulkWidget .dns-footer {\r\n      background: linear-gradient(135deg, #f8fafc, #f1f5f9) !important;\r\n      padding: 12px 20px !important;\r\n      border-top: 1px solid #e2e8f0 !important;\r\n      text-align: center !important;\r\n      font-size: 11px !important;\r\n      color: #64748b !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-footer-content {\r\n      display: flex !important;\r\n      align-items: center !important;\r\n      justify-content: center !important;\r\n      gap: 8px !important;\r\n      flex-wrap: wrap !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-footer-brand {\r\n      color: #151577 !important;\r\n      font-weight: 700 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-footer-link {\r\n      color: #32b561 !important;\r\n      text-decoration: none !important;\r\n      font-weight: 600 !important;\r\n    }\r\n\r\n    #dnsBulkWidget .dns-footer-link:hover {\r\n      text-decoration: underline !important;\r\n    }\r\n\r\n    \/* Mobile Responsive *\/\r\n    @media (min-width: 768px) {\r\n      #dnsBulkWidget .dns-main-layout {\r\n        display: grid !important;\r\n        grid-template-columns: 1fr 320px !important;\r\n        gap: 20px !important;\r\n      }\r\n      \r\n      #dnsBulkWidget .dns-actions {\r\n        flex-direction: column !important;\r\n        align-items: stretch !important;\r\n      }\r\n      \r\n      #dnsBulkWidget .dns-action-buttons {\r\n        display: flex !important;\r\n        flex-direction: column !important;\r\n        gap: 10px !important;\r\n      }\r\n      \r\n      #dnsBulkWidget .dns-textarea {\r\n        min-height: 160px !important;\r\n      }\r\n    }\r\n    \r\n    @media (max-width: 767px) {\r\n      #dnsBulkWidget .dns-actions {\r\n        flex-direction: column !important;\r\n      }\r\n      \r\n      #dnsBulkWidget .dns-action-buttons {\r\n        width: 100% !important;\r\n      }\r\n      \r\n      #dnsBulkWidget .dns-btn {\r\n        flex: 1 !important;\r\n      }\r\n      \r\n      #dnsBulkWidget .dns-types {\r\n        justify-content: center !important;\r\n      }\r\n\r\n      #dnsBulkWidget .dns-table-header.mobile-hidden,\r\n      #dnsBulkWidget .dns-table-cell.mobile-hidden {\r\n        display: none !important;\r\n      }\r\n\r\n      #dnsBulkWidget .dns-table-header,\r\n      #dnsBulkWidget .dns-table-cell {\r\n        padding: 8px 6px !important;\r\n        font-size: 11px !important;\r\n      }\r\n    }\r\n  `;\r\n\r\n  \/\/ Th\u00eam CSS v\u00e0o head\r\n  const styleEl = document.createElement('style');\r\n  styleEl.textContent = widgetStyles;\r\n  document.head.appendChild(styleEl);\r\n\r\n  root.innerHTML = `\r\n  <div class=\"dns-container\">\r\n    \r\n    <!-- DPS.MEDIA Header -->\r\n    <div class=\"dns-header\">\r\n      <div class=\"dns-header-bg1\">\r\n      <div class=\"dns-header-bg2\">\r\n      <div class=\"dns-header-content\">\r\n        <div class=\"dns-header-top\">\r\n          <div class=\"dns-header-left\">\r\n            <div class=\"dns-icon\">\ud83d\udd0d\r\n            <div>\r\n              <div class=\"dns-title\">Tra C\u1ee9u DNS H\u00e0ng Lo\u1ea1t\r\n              <div class=\"dns-subtitle\">C\u00f4ng c\u1ee5 chuy\u00ean nghi\u1ec7p t\u1eeb DPS.MEDIA\r\n            \r\n          \r\n          <div class=\"dns-brand\">\r\n            <div class=\"dns-brand-name\">DPS.MEDIA\r\n            <div>Digital Tools\r\n          \r\n        \r\n        <div class=\"dns-desc\">Nh\u1eadp m\u1ed7i t\u00ean mi\u1ec1n m\u1ed9t d\u00f2ng (c\u00f3 th\u1ec3 d\u00e1n URL). Ch\u1ecdn lo\u1ea1i b\u1ea3n ghi ho\u1eb7c \"T\u1ea4T C\u1ea2\" \u0111\u1ec3 tra 5 lo\u1ea1i ph\u1ed5 bi\u1ebfn.\r\n      \r\n    \r\n\r\n    <!-- Main Content -->\r\n    <div class=\"dns-main\">\r\n      <!-- Mobile\/Desktop Layout -->\r\n      <div class=\"dns-main-layout\">\r\n        \r\n        <!-- Input Section -->\r\n        <div class=\"dns-input-section\">\r\n          <textarea id=\"dns-lines\" class=\"dns-textarea\" rows=\"6\" placeholder=\"dps.media\nexample.com\nhttps:\/\/sub.domain.com\/\">\r\n          <div id=\"dns-count\" class=\"dns-count\">0 t\u00ean mi\u1ec1n\r\n        \r\n        \r\n        <!-- Controls Section -->\r\n        <div class=\"dns-controls\">\r\n          \r\n          <!-- Record Types -->\r\n          <div>\r\n            <div class=\"dns-label\">Lo\u1ea1i B\u1ea3n Ghi:\r\n            <div id=\"dns-types\" class=\"dns-types\">\r\n          \r\n          \r\n          <!-- Settings & Buttons Row -->\r\n          <div class=\"dns-actions\">\r\n            \r\n            <!-- Delay Setting -->\r\n            <div class=\"dns-delay-section\">\r\n              <div class=\"dns-delay-label\">\u0110\u1ed9 tr\u1ec5 gi\u1eefa c\u00e1c request:\r\n              <div class=\"dns-delay-input-group\">\r\n                <input id=\"dns-delay\" type=\"number\" min=\"50\" step=\"10\" value=\"120\" class=\"dns-delay-input\"> \r\n                <span class=\"dns-delay-unit\">ms\r\n              \r\n            \r\n            \r\n            <!-- Action Buttons -->\r\n            <div class=\"dns-action-buttons\">\r\n              <button id=\"dns-run\" class=\"dns-btn dns-btn-primary\">\r\n                <span id=\"run-text\">\ud83d\ude80 B\u1eaft \u0110\u1ea7u\r\n              \r\n              <button id=\"dns-stop\" class=\"dns-btn dns-btn-secondary\" style=\"display:none\">\r\n                \u23f9\ufe0f D\u1eebng\r\n              \r\n            \r\n          \r\n        \r\n      \r\n\r\n      <!-- Status & Actions Bar -->\r\n      <div class=\"dns-status-bar\">\r\n        <button id=\"dns-copy-table\" class=\"dns-btn-small dns-btn-copy\" disabled>\r\n          \ud83d\udccb Sao Ch\u00e9p\r\n        \r\n        <button id=\"dns-clear\" class=\"dns-btn-small dns-btn-clear\">\r\n          \ud83d\uddd1\ufe0f X\u00f3a\r\n        \r\n        \r\n        <!-- Progress Bar -->\r\n        <div class=\"dns-status-right\">\r\n          <div id=\"dns-progress\" class=\"dns-progress\">\r\n            <div id=\"dns-progress-bar\" class=\"dns-progress-bar\">\r\n          \r\n          <div id=\"dns-status\" class=\"dns-status\">\r\n        \r\n      \r\n\r\n      <!-- Error Display -->\r\n      <div id=\"dns-error\" class=\"dns-error\">\r\n        <span class=\"dns-error-icon\">\u26a0\ufe0f\r\n        <span id=\"dns-error-text\" class=\"dns-error-text\">\r\n      \r\n\r\n      <!-- Results Table -->\r\n      <div id=\"dns-results\" class=\"dns-results\">\r\n        <div class=\"dns-empty-state\">\r\n          <div class=\"dns-empty-icon\">\ud83d\udcca\r\n          <div class=\"dns-empty-text\">S\u1eb5n s\u00e0ng tra c\u1ee9u b\u1ea3n ghi DNS...\r\n          <div class=\"dns-empty-subtext\">\u0110\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi DPS.MEDIA\r\n        \r\n      \r\n    \r\n\r\n    <!-- Footer -->\r\n    <div class=\"dns-footer\">\r\n      <div class=\"dns-footer-content\">\r\n        <span>Ph\u00e1t tri\u1ec3n b\u1edfi\r\n        <strong class=\"dns-footer-brand\">DPS.MEDIA\r\n        <span>\u2022\r\n        <span>C\u00f4ng c\u1ee5 s\u1ed1 chuy\u00ean nghi\u1ec7p\r\n        <span>\u2022\r\n        <a href=\"https:\/\/dps.media\" target=\"_blank\" class=\"dns-footer-link\">dps.media\r\n      \r\n    \r\n  `;\r\n\r\n  const ta = root.querySelector('#dns-lines');\r\n  const btnRun = root.querySelector('#dns-run');\r\n  const btnStop = root.querySelector('#dns-stop');\r\n  const btnClear = root.querySelector('#dns-clear');\r\n  const typesWrap = root.querySelector('#dns-types');\r\n  const statusEl = root.querySelector('#dns-status');\r\n  const errorEl = root.querySelector('#dns-error');\r\n  const errorTextEl = root.querySelector('#dns-error-text');\r\n  const resultsEl = root.querySelector('#dns-results');\r\n  const delayInput = root.querySelector('#dns-delay');\r\n  const btnCopy = root.querySelector('#dns-copy-table');\r\n  const countEl = root.querySelector('#dns-count');\r\n  const progressEl = root.querySelector('#dns-progress');\r\n  const progressBarEl = root.querySelector('#dns-progress-bar');\r\n  const runTextEl = root.querySelector('#run-text');\r\n\r\n  \/\/ Type pills v\u1edbi DPS branding\r\n  const TYPE_LABELS = {\r\n    'ALL': 'T\u1ea4T C\u1ea2',\r\n    'A': 'A', \r\n    'CNAME': 'CNAME',\r\n    'MX': 'MX',\r\n    'NS': 'NS',\r\n    'TXT': 'TXT'\r\n  };\r\n\r\n  let activeType = 'A';\r\n  RECORDS.forEach(t => {\r\n    const b = document.createElement('button');\r\n    b.textContent = TYPE_LABELS[t] || t;\r\n    b.className = 'dns-type-btn';\r\n    if (t === activeType) {\r\n      b.classList.add('active');\r\n    }\r\n    \r\n    b.addEventListener('click',()=>{\r\n      if (isRunning) return;\r\n      activeType = t;\r\n      [...typesWrap.children].forEach(c => c.classList.remove('active'));\r\n      b.classList.add('active');\r\n    });\r\n    typesWrap.appendChild(b);\r\n  });\r\n\r\n  \/\/ Domain count tracker v\u1edbi DPS colors\r\n  function updateDomainCount() {\r\n    const domains = ta.value.split(\/\\r?\\n\/)\r\n      .map(s=>extractHostname(s))\r\n      .filter(Boolean);\r\n    countEl.textContent = `${domains.length} t\u00ean mi\u1ec1n`;\r\n    \r\n    if (domains.length > 100) {\r\n      countEl.style.background = 'rgba(220,38,38,0.9) !important';\r\n      countEl.style.color = 'white !important';\r\n    } else if (domains.length > 50) {\r\n      countEl.style.background = 'rgba(245,158,11,0.9) !important';\r\n      countEl.style.color = 'white !important';\r\n    } else if (domains.length > 0) {\r\n      countEl.style.background = 'rgba(50,181,97,0.9) !important';\r\n      countEl.style.color = 'white !important';\r\n    } else {\r\n      countEl.style.background = 'rgba(21,21,119,0.9) !important';\r\n      countEl.style.color = 'white !important';\r\n    }\r\n  }\r\n\r\n  ta.addEventListener('input', updateDomainCount);\r\n  updateDomainCount();\r\n\r\n  function clampDelay(){\r\n    let v = Number(delayInput.value || 0);\r\n    if (!Number.isFinite(v) || v < 50){\r\n      v = 50;\r\n      delayInput.value = String(v);\r\n      setStatus('\u26a0\ufe0f \u0110\u1ed9 tr\u1ec5 \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u1ed1i thi\u1ec3u: 50ms');\r\n    }\r\n    return v;\r\n  }\r\n  delayInput.addEventListener('input', clampDelay);\r\n  delayInput.addEventListener('blur', clampDelay);\r\n  delayInput.addEventListener('keydown', (e)=>{\r\n    if (e.key === '-') e.preventDefault();\r\n  });\r\n\r\n  function extractHostname(input){\r\n    if(!input) return '';\r\n    try{ return new URL(input).hostname.replace(\/\\.$\/,''); }\r\n    catch(e){ return String(input).trim().replace(\/^https?:\\\/\\\/\/i,'').replace(\/^\\\/*\/,'').split('\/')[0].split('?')[0].replace(\/\\.$\/,''); }\r\n  }\r\n\r\n  function sleep(ms){ return new Promise(r=>setTimeout(r, ms)); }\r\n\r\n  function clearError(){ \r\n    errorEl.style.display='none'; \r\n    errorTextEl.textContent=''; \r\n  }\r\n  function showError(msg){ \r\n    errorEl.style.display='flex'; \r\n    errorTextEl.textContent=msg; \r\n  }\r\n  function setStatus(msg){ \r\n    statusEl.textContent = msg; \r\n  }\r\n\r\n  function updateProgress(current, total) {\r\n    if (total === 0) {\r\n      progressEl.style.display = 'none';\r\n      return;\r\n    }\r\n    progressEl.style.display = 'block';\r\n    const percentage = Math.min((current \/ total) * 100, 100);\r\n    progressBarEl.style.width = `${percentage}%`;\r\n  }\r\n\r\n  \/\/ Render table v\u1edbi DPS branding - S\u1eed d\u1ee5ng div thay v\u00ec table elements\r\n  function ensureTable(){\r\n    if(resultsEl.firstChild && resultsEl.firstChild.classList && resultsEl.firstChild.classList.contains('dns-table')) return resultsEl.firstChild;\r\n    resultsEl.innerHTML = '';\r\n    const table = document.createElement('div');\r\n    table.className = 'dns-table';\r\n    \r\n    const isMobile = window.innerWidth < 768;\r\n    table.innerHTML = `<div class=\"dns-table-header-row\">\r\n      <div class=\"dns-table-header\">T\u00ean Mi\u1ec1n\r\n      <div class=\"dns-table-header center\">Lo\u1ea1i\r\n      <div class=\"dns-table-header ${isMobile ? 'mobile-hidden' : ''}\">T\u00ean\r\n      <div class=\"dns-table-header center\">TTL\r\n      <div class=\"dns-table-header\">D\u1eef Li\u1ec7u\r\n    <div class=\"dns-table-body\">`;\r\n    resultsEl.appendChild(table);\r\n    return table;\r\n  }\r\n\r\n  const allRows = [];\r\n  function appendRows(rows){\r\n    const table = ensureTable();\r\n    const tbody = table.querySelector('.dns-table-body');\r\n    const frag = document.createDocumentFragment();\r\n    const isMobile = window.innerWidth < 768;\r\n    \r\n    rows.forEach((r, i) => {\r\n      allRows.push(r);\r\n      const tr = document.createElement('div');\r\n      tr.className = 'dns-table-row';\r\n      \r\n      let dataColor = '#374151';\r\n      if (r.data === '(kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u)') dataColor = '#9ca3af';\r\n      else if (r.data && r.data.startsWith('L\u1ed7i:')) dataColor = '#dc2626';\r\n      \r\n      tr.innerHTML = `<div class=\"dns-table-cell\">${r.domain}\r\n        <div class=\"dns-table-cell center type\">${r.type}\r\n        <div class=\"dns-table-cell name ${isMobile ? 'mobile-hidden' : ''}\">${r.name||''}\r\n        <div class=\"dns-table-cell center ttl\">${r.ttl??''}\r\n        <div class=\"dns-table-cell data\" style=\"color:${dataColor}\">${r.data||''}`;\r\n      frag.appendChild(tr);\r\n    });\r\n    tbody.appendChild(frag);\r\n    \r\n    btnCopy.disabled = false;\r\n    btnCopy.classList.remove('success');\r\n  }\r\n\r\n  async function queryDoH(domain, type){\r\n    const base = 'https:\/\/dns.google\/resolve';\r\n    const params = new URLSearchParams();\r\n    params.set('name', domain);\r\n    params.set('type', TYPE_CODE[type]);\r\n    const url = `${base}?${params.toString()}`;\r\n    const res = await fetch(url, { headers: { 'Accept':'application\/json' }});\r\n    if(!res.ok) throw new Error(`HTTP ${res.status}`);\r\n    return await res.json();\r\n  }\r\n\r\n  let abortFlag = false;\r\n  let isRunning = false;\r\n\r\n  btnStop.addEventListener('click', ()=>{ \r\n    abortFlag = true; \r\n    setStatus('\ud83d\uded1 \u0110ang d\u1eebng...'); \r\n  });\r\n\r\n  btnClear.addEventListener('click', () => {\r\n    if (isRunning) return;\r\n    resultsEl.innerHTML = `<div class=\"dns-empty-state\">\r\n      <div class=\"dns-empty-icon\">\ud83d\udcca\r\n      <div class=\"dns-empty-text\">S\u1eb5n s\u00e0ng tra c\u1ee9u b\u1ea3n ghi DNS...\r\n      <div class=\"dns-empty-subtext\">\u0110\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi DPS.MEDIA\r\n    `;\r\n    allRows.length = 0;\r\n    btnCopy.disabled = true;\r\n    btnCopy.classList.remove('success');\r\n    clearError();\r\n    setStatus('');\r\n    progressEl.style.display = 'none';\r\n  });\r\n\r\n  btnRun.addEventListener('click', async ()=>{\r\n    if (isRunning) return;\r\n    \r\n    clearError(); \r\n    allRows.length = 0; \r\n    abortFlag = false;\r\n    isRunning = true;\r\n\r\n    btnRun.disabled = true;\r\n    runTextEl.textContent = '\u23f3 \u0110ang ch\u1ea1y...';\r\n    btnStop.style.display = 'block';\r\n    btnClear.style.display = 'none';\r\n    \r\n    [...typesWrap.children].forEach(b => {\r\n      b.style.cursor = 'not-allowed';\r\n      b.style.opacity = '0.6';\r\n    });\r\n\r\n    const delay = clampDelay();\r\n\r\n    const domains = ta.value.split(\/\\r?\\n\/)\r\n      .map(s=>extractHostname(s))\r\n      .filter(Boolean);\r\n\r\n    if (!domains.length){ \r\n      showError('Vui l\u00f2ng nh\u1eadp \u00edt nh\u1ea5t 1 t\u00ean mi\u1ec1n.'); \r\n      resetUIState();\r\n      return; \r\n    }\r\n    if (domains.length > 100){ \r\n      showError('Gi\u1edbi h\u1ea1n 100 t\u00ean mi\u1ec1n m\u1ed7i l\u1ea7n \u0111\u1ec3 tr\u00e1nh qu\u00e1 t\u1ea3i. H\u00e3y chia nh\u1ecf danh s\u00e1ch.'); \r\n      resetUIState();\r\n      return; \r\n    }\r\n\r\n    const types = (activeType==='ALL') ? [...POPULAR] : [activeType];\r\n    const totalQueries = domains.length * types.length;\r\n\r\n    resultsEl.innerHTML = '';\r\n    ensureTable();\r\n\r\n    let completed = 0;\r\n    for (let i=0; i<domains.length && !abortFlag; i++){\r\n      const d = domains[i];\r\n      for (const t of types){\r\n        if (abortFlag) break;\r\n        try{\r\n          setStatus(`\ud83d\udd0d ${d} [${t}] (${completed + 1}\/${totalQueries})`);\r\n          updateProgress(completed, totalQueries);\r\n          \r\n          const json = await queryDoH(d, t);\r\n          if (json && Array.isArray(json.Answer) && json.Answer.length > 0){\r\n            const rows = json.Answer.map(a=>({ domain:d, type:t, name:a.name, ttl:a.TTL, data:a.data }));\r\n            appendRows(rows);\r\n          } else if (json && Array.isArray(json.Authority) && json.Authority.length > 0){\r\n            const rows = json.Authority.map(a=>({ domain:d, type:t, name:a.name, ttl:a.TTL, data:a.data }));\r\n            appendRows(rows);\r\n          } else {\r\n            appendRows([{ domain:d, type:t, name:'', ttl:'', data:'(kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u)' }]);\r\n          }\r\n        }catch(e){\r\n          appendRows([{ domain:d, type:t, name:'', ttl:'', data:`L\u1ed7i: ${e.message}` }]);\r\n        }\r\n        completed++;\r\n        updateProgress(completed, totalQueries);\r\n        if (completed < totalQueries && !abortFlag) {\r\n          await sleep(delay);\r\n        }\r\n      }\r\n    }\r\n    \r\n    if (abortFlag) {\r\n      setStatus(`\u23f9\ufe0f \u0110\u00e3 d\u1eebng (${completed}\/${totalQueries})`);\r\n    } else {\r\n      setStatus(`\u2705 Ho\u00e0n th\u00e0nh! ${allRows.length} b\u1ea3n ghi t\u1eeb ${domains.length} t\u00ean mi\u1ec1n`);\r\n    }\r\n    \r\n    resetUIState();\r\n  });\r\n\r\n  function resetUIState() {\r\n    isRunning = false;\r\n    btnRun.disabled = false;\r\n    runTextEl.textContent = '\ud83d\ude80 B\u1eaft \u0110\u1ea7u';\r\n    btnStop.style.display = 'none';\r\n    btnClear.style.display = 'block';\r\n    progressEl.style.display = 'none';\r\n    \r\n    [...typesWrap.children].forEach(b => {\r\n      b.style.cursor = 'pointer';\r\n      b.style.opacity = '1';\r\n    });\r\n  }\r\n\r\n  function escapeCell(v){\r\n    if (v == null) return '';\r\n    const s = String(v);\r\n    return s.replace(\/\\t\/g, ' ').replace(\/\\r?\\n\/g, ' ');\r\n  }\r\n  function rowsToTSV(rows){\r\n    const header = ['T\u00ean Mi\u1ec1n','Lo\u1ea1i','T\u00ean','TTL','D\u1eef Li\u1ec7u'];\r\n    const lines = [header.join('\\t')].concat(rows.map(r => [r.domain, r.type, r.name||'', r.ttl??'', r.data||''].map(escapeCell).join('\\t')));\r\n    return lines.join('\\n');\r\n  }\r\n  async function copyText(text){\r\n    if (navigator.clipboard && navigator.clipboard.writeText){\r\n      await navigator.clipboard.writeText(text);\r\n    } else {\r\n      const ta = document.createElement('textarea');\r\n      ta.value = text; document.body.appendChild(ta); ta.select(); document.execCommand('copy'); document.body.removeChild(ta);\r\n    }\r\n  }\r\n  btnCopy.addEventListener('click', async ()=>{\r\n    if (!allRows.length){ setStatus('\u274c Kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u \u0111\u1ec3 sao ch\u00e9p.'); return; }\r\n    try{\r\n      await copyText(rowsToTSV(allRows));\r\n      setStatus('\u2705 \u0110\u00e3 sao ch\u00e9p b\u1ea3ng v\u00e0o clipboard!');\r\n      \r\n      const originalText = btnCopy.textContent;\r\n      btnCopy.textContent = '\u2705 \u0110\u00e3 sao ch\u00e9p!';\r\n      btnCopy.classList.add('success');\r\n      \r\n      setTimeout(() => {\r\n        btnCopy.textContent = originalText;\r\n        btnCopy.classList.remove('success');\r\n      }, 2000);\r\n    }catch(e){ \r\n      setStatus('\u274c Sao ch\u00e9p th\u1ea5t b\u1ea1i: ' + e.message); \r\n    }\r\n  });\r\n\r\n  \/\/ Window resize handler\r\n  let resizeTimeout;\r\n  window.addEventListener('resize', () => {\r\n    clearTimeout(resizeTimeout);\r\n    resizeTimeout = setTimeout(() => {\r\n      if (resultsEl.firstChild && resultsEl.firstChild.classList && resultsEl.firstChild.classList.contains('dns-table')) {\r\n        const currentRows = [...allRows];\r\n        allRows.length = 0;\r\n        resultsEl.innerHTML = '';\r\n        if (currentRows.length > 0) {\r\n          appendRows(currentRows);\r\n        }\r\n      }\r\n    }, 100);\r\n  });\r\n\r\n  \/\/ Initialize copy button state\r\n  btnCopy.disabled = true;\r\n})();\r\n<\/script><!-- End DNS Bulk Lookup Widget - DPS.MEDIA --><strong>Checking domain information is the first and most important step to protect your digital assets.<\/strong><p> 901 out of 1000 small businesses risk losing domain usage rights due to lack of management knowledge.<\/p><p><a class=\"wpil_keyword_link\" href=\"https:\/\/dps.media\/en\/\" title=\"DPS.MEDIA JSC\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"756\">DPS.MEDIA<\/a> has supported hundreds of SMEs in clearly understanding domains, helping them minimize the risk of losing their online brand. Grasping information firmly helps you control and secure domain names more effectively.<br><img decoding=\"async\" class=\"kimage_class\" src=\"https:\/\/dps.media\/wp-content\/uploads\/2025\/08\/hu-hop.jpg9f33.jpg\" alt=\"The importance of checking domain information in digital business strategy\" title=\"\"><\/p><h2 id=\"tam-quan-trong-cua-viec-kiem-tra-thong-tin-ten-mien-trong-chien-luoc-kinh-doanh-so\">The importance of checking domain information in digital business strategy<\/h2><h3>Direct impact on brand &amp; customer trust<\/h3><p><strong>Domain name<\/strong> is an essential part of brand identity in the digital environment. If domain information is not fully checked and verified, businesses may face risks such as duplicate domains, easy impersonation, or association with harmful content.<\/p><p>\u2013 60% of users said they have less trust in websites using non-transparent domains (Trustpilot Report, 2022)<br>\n\u2013 A startup company in Hanoi lost nearly 300 million VND due to the misappropriation of their .com domain after only registering the .vn version without a comprehensive ownership check (anonymous internal case study)<\/p><div class=\"wp-block-group has-background\" style=\"background-color:#f8f9fa;padding:15px\">\n  <strong>Tip:<\/strong> Always check the WHOIS status and domain ownership period. Set renewal reminders to avoid losing control.\n<\/div><h3>Checking helps secure and prevent fraud<\/h3><p>Regularly scanning and verifying domain information helps detect:<\/p><p>\u2013 Unauthorized DNS changes<br>\n\u2013 Domain names expired or transferred without notice<br>\n\u2013 Phishing campaigns using similar fake domain names  <\/p><p>A survey by ICANN (2023) shows up to 12% of SMEs were scammed via emails impersonating similar domains.<\/p><h3>Checklist: 5 things to do when managing a domain<\/h3><ul>\n<li>Check WHOIS information periodically (every 6 months)<\/li>\n<li>Enable domain lock mode (Domain Lock)<\/li>\n<li>Back up DNS configuration and check MX record<\/li>\n<li>Enable auto-renewal and set notifications before expiration<\/li>\n<li>Monitor domain variants (typosquatting)<\/li>\n<\/ul><h3>Summary table of domain status &amp; alerts<\/h3><table class=\"WordPress\">\n<thead>\n<tr>\n<th>Domain name<\/th>\n<th>Status<\/th>\n<th>Expiration date<\/th>\n<th>Recommendations<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>example.com<\/td>\n<td>Active<\/td>\n<td>12\/08\/2025<\/td>\n<td>Schedule auto-renewal<\/td>\n<\/tr>\n<tr>\n<td>example.vn<\/td>\n<td>Expiring soon<\/td>\n<td>03\/10\/2024<\/td>\n<td>Renew now<\/td>\n<\/tr>\n<tr>\n<td>examp1e.com<\/td>\n<td>Being abused<\/td>\n<td>N\/A<\/td>\n<td>Report and register variants<\/td>\n<\/tr>\n<\/tbody>\n<\/table><h3>Brief takeaway:<\/h3><p>Checking domain information not only protects your brand but is also an essential part of safe and efficient operation on digital platforms. A small action can prevent major risks.<br><img decoding=\"async\" class=\"kimage_class\" src=\"https:\/\/dps.media\/wp-content\/uploads\/2025\/08\/ervice.jpgafed.jpg\" alt=\"Steps to check domain information accurately and quickly\" title=\"\"><\/p><h2 id=\"cac-buoc-kiem-tra-thong-tin-ten-mien-chinh-xac-va-nhanh-chong\">Steps to check domain information accurately and quickly<\/h2><h3>1. Identify the domain management provider<\/h3><p>First, you need to identify where the domain name is being managed \u2013 it could be GoDaddy, Namecheap, PA Vietnam, or another provider. This helps you know where to access to view DNS configurations, manage SSL, or set security settings.<\/p><ul>\n<li>Visit https:\/\/whois.domaintools.com\/ to look up information<\/li>\n<li>Note the Registrar and Name Server<\/li>\n<\/ul><div class=\"wp-block-group has-background\">\n<p><strong>TIP:<\/strong> If you use a CMS like WordPress, check which hosting the DNS is pointing to in order to avoid service interruptions.<\/p>\n<\/div><h3>2. Lookup detailed WHOIS information<\/h3><p>WHOIS is a common method to check the status and ownership information of a domain. However, many providers now apply WHOIS Privacy policies to hide registrant information for security reasons.<\/p><p>Below is a sample WHOIS information table that may appear after lookup:<\/p><table class=\"wordpress\">\n<tr>\n<th>Information<\/th>\n<th>Details<\/th>\n<\/tr>\n<tr>\n<td>domain Name<\/td>\n<td>exampledomain.com<\/td>\n<\/tr>\n<tr>\n<td>Registrar<\/td>\n<td>Namecheap, Inc.<\/td>\n<\/tr>\n<tr>\n<td>Expiry Date<\/td>\n<td>2025-09-10<\/td>\n<\/tr>\n<tr>\n<td>Name server<\/td>\n<td>ns1.digitalocean.com<\/td>\n<\/tr>\n<\/table><h3>3. Checklist of specific items to check<\/h3><p>After obtaining information from WHOIS, you should proceed to review according to the following action list:<\/p><ul>\n<li>\u2714 Is the domain activated and still valid?<\/li>\n<li>\u2714 Is WHOIS Privacy (personal information hidden) applied?<\/li>\n<li>\u2714 Does the nameserver point correctly to the server in use?<\/li>\n<li>\u2714 Verify the domain admin email to avoid losing access<\/li>\n<li>\u2714 Check DNS settings: MX, TXT (SPF\/DKIM), A records<\/li>\n<\/ul><div class=\"wp-block-group has-background\">\n<p><strong>TIP:<\/strong> It is recommended to set a reminder 30 days before the domain expires to ensure uninterrupted operation.<\/p>\n<\/div><h3>Real-world examples &amp; risk warnings<\/h3><p>during a domain audit, an SME customer in District 3, HCMC discovered their domain had expired for 3 days and moved to \u201cRedemption Period\u201d status. The cost to restore was $120 USD at Name.com (2023).<\/p><p>According to <em>ICANN WHOIS Accuracy Reporting System \u2013 Report 2023<\/em>, 18% of domains are registered with incorrect emails or missing contact information, causing difficulties in renewal and complaint retrieval.<\/p><div class=\"wp-block-group has-background\">\n<p><strong>Note:<\/strong> A domain with incorrect information can become a serious security vulnerability for both the website and the company's email system.<\/p>\n<\/div><h3>Brief takeaway<\/h3><p>Periodic domain information checks should be considered a basic security procedure every 6 months. Prioritize maintaining accurate contact, controlling DNS, and monitoring expiration dates to minimize any risk of digital operation disruption.<br><img decoding=\"async\" class=\"kimage_class\" src=\"https:\/\/dps.media\/wp-content\/uploads\/2025\/08\/285-29.jpgfedc.jpg\" alt=\"Decoding important fields in WHOIS and how to interpret them correctly\" title=\"\"><\/p><h2 id=\"giai-ma-cac-truong-thong-tin-quan-trong-trong-whois-va-cach-hieu-dung\">Decoding important fields in WHOIS and how to interpret them correctly<\/h2><h3>Domain ownership information<\/h3><p>This is the main section that helps determine <strong>who is the legal owner of the domain<\/strong>. Common fields include:<\/p><p>\u2013 Registrant Name<br>\n\u2013 Registrant Organization (if any)<br>\n\u2013 Primary contact email, address, and phone number<\/p><p>\ud83d\udcdd If anonymous (Privacy protection), the system will display a proxy address \u2013 this is common with registrars like Namecheap or Google Domains.<\/p><blockquote><p>\nExample: A fashion store owner used the domain \u201cexamplefashion.vn\u201d and lost it because the domain was in the name of a former partner, and they did not know the email address in WHOIS \u2013 leading to a dispute lasting 3 months.\n<\/p><\/blockquote><h3>Technical and management information<\/h3><p>You need to pay attention to the following fields to avoid unwanted domain loss:<\/p><p>\u2013 Registrar: The registrar managing the domain name (e.g., P.A Vietnam)<br>\n\u2013 Name Server: The system directing traffic to the web host<br>\n\u2013 Status: Domain name status, for example:<br>\n  \u2013 <em>clientTransferProhibited<\/em>: transfer is currently locked<br>\n  \u2013 <em>redemptionPeriod<\/em>: the domain has been renewed late and is suspended<\/p><div class=\"wp-block-group has-background\" style=\"background-color: #f5f5f5;padding: 1em;border-left: 4px solid #007cba\">\n  <strong>Tip:<\/strong> Periodically check the domain status to detect early warnings such as \u201cpendingDelete\u201d or \u201conHold\u201d.\n<\/div><h3>Accurate WHOIS check checklist<\/h3><ul>\n<li>Is the owner's information accurate?<\/li>\n<li>Is the admin email still accessible?<\/li>\n<li>Is the domain status locked?<\/li>\n<li>Is the registrar reputable and provides good support?<\/li>\n<\/ul><p><b>Comparison table of common domain statuses:<\/b><\/p><table class=\"WordPress\">\n<thead>\n<tr>\n<th>Status<\/th>\n<th>Meaning<\/th>\n<th>Impact<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Active<\/td>\n<td>Domain is active<\/td>\n<td>No issues<\/td>\n<\/tr>\n<tr>\n<td>clientHold<\/td>\n<td>Temporarily suspended due to payment issues<\/td>\n<td>Website is inaccessible<\/td>\n<\/tr>\n<tr>\n<td>redemptionPeriod<\/td>\n<td>Expired, awaiting redemption<\/td>\n<td>Increased costs and risk of losing the domain<\/td>\n<\/tr>\n<\/tbody>\n<\/table><h3>Takeaway: Reading WHOIS is not hard, but must be done correctly<\/h3><p>Understanding WHOIS data correctly helps you <strong>protect your brand<\/strong>, <strong>avoid the risk of losing domain control<\/strong> and <strong>maintain stable operations<\/strong>. Always check WHOIS periodically every 3-6 months, or when changing hosting service providers. Data source: ICANN WHOIS Accuracy Reporting System (2023) \u2013 the rate of outdated WHOIS in SMEs accounts for more than 46%.<br><img decoding=\"async\" class=\"kimage_class\" src=\"https:\/\/dps.media\/wp-content\/uploads\/2025\/08\/m-3360.jpg68af.jpg\" alt=\"Domain security strategies to avoid risks and loss of ownership\" title=\"\"><\/p><h2 id=\"chien-luoc-bao-mat-ten-mien-giup-tranh-rui-ro-va-mat-quyen-so-huu\">Domain security strategies to avoid risks and loss of ownership<\/h2><h3>1. Enable domain lock and two-step verification<\/h3><p>One of the most basic security steps is <strong>to enable Domain Lock<\/strong> to prevent unauthorized domain transfers. Additionally, make sure the domain admin account has enabled <strong>two-factor authentication (2FA)<\/strong> to enhance security.<\/p><div class=\"wp-block-group has-background\">\n<p><strong>Tip:<\/strong> Use an authenticator app like Google Authenticator instead of SMS to avoid SIM swap risks.<\/p>\n<\/div><h3>2. Use separate contact info and update regularly<\/h3><p>Use a dedicated email for domain management, avoid using personal or shared internal emails. According to Verisign's 2023 report, 26% of domain losses stem from weak or leaked admin emails.<\/p><ul>\n<li>Update contact information every 6-12 months<\/li>\n<li>Avoid public WHOIS if not necessary<\/li>\n<li>Enable Privacy Protection if appropriate<\/li>\n<\/ul><h3>3. Register long-term and monitor expiration dates<\/h3><p>There have been many cases of losing domain names due to forgetting to renew \u2013 especially in SME companies. For example: a retail business in HCMC once lost its main domain because it only registered for 1 year and did not receive renewal notices due to an old email.<\/p><p>Below is a short tracking table to help you manage domain expiration effectively:<\/p><table class=\"wordpress\">\n<thead>\n<tr>\n<th>Domain name<\/th>\n<th>Expiration date<\/th>\n<th>Re-register<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>example.com<\/td>\n<td>12\/08\/2025<\/td>\n<td>10\/07\/2025<\/td>\n<\/tr>\n<tr>\n<td>thuonghieu.vn<\/td>\n<td>03\/03\/2024<\/td>\n<td>01\/02\/2024<\/td>\n<\/tr>\n<\/tbody>\n<\/table><h3>Domain security checklist<\/h3><ul>\n<li>\u2611\ufe0f Enable domain lock (Domain Lock)<\/li>\n<li>\u2611\ufe0f Enable 2FA for admin account<\/li>\n<li>\u2611\ufe0f Use a dedicated email for the domain<\/li>\n<li>\u2611\ufe0f Renew for at least 2-3 years at a time<\/li>\n<li>\u2611\ufe0f Monitor expiration to avoid service disruption<\/li>\n<\/ul><div class=\"wp-block-group has-background\">\n<p><strong>Note:<\/strong> If you use a third-party service, request direct access to the domain admin system to mitigate risks.<\/p>\n<\/div><h3>Domain security summary<\/h3><p>Losing a domain name not only causes brand damage but also affects reputation and SEO. Maintaining basic security strategies as above will ensure your domain is difficult to compromise \u2013 regardless of the business size.<br><img decoding=\"async\" class=\"kimage_class\" src=\"https:\/\/dps.media\/wp-content\/uploads\/2025\/08\/ide-EN.jpgde39.jpg\" alt=\"Guide to updating and effectively managing domain information at the registrar\" title=\"\"><\/p><h2 id=\"huong-dan-cap-nhat-va-quan-ly-thong-tin-ten-mien-hieu-qua-tai-nha-dang-ky\">Guide to updating and effectively managing domain information at the registrar<\/h2><h3>Update owner information accurately and completely<\/h3><p>Maintaining accurate ownership information helps you avoid the risk of losing control of your domain. According to ICANN (2023), 12% of domain hijacking cases stem from incorrect WHOIS information.<br>\nList of information to check periodically:<\/p><ul>\n<li><strong>Owner's name<\/strong> matches the business registration license (if any)<\/li>\n<li>Contact email address is always active<\/li>\n<li>Valid phone number and postal address<\/li>\n<li>Technical and admin information must be clearly separated<\/li>\n<\/ul><div class=\"wp-block-group has-background\">\n<p><strong>Tip:<\/strong> Use a separate email to manage the domain, do not use a personal email that is easily compromised.<\/p>\n<\/div><h3>Set up and periodically check security options<\/h3><p>Most registrars now provide the <strong>domain lock feature<\/strong> \u2013 a security layer preventing unauthorized domain transfers.<br>\nExample: a DPS.MEDIA client almost lost the right to use their domain because they hadn't enabled domain lock, even after owning it for 5 years.  <\/p><p>Recommended action list:<\/p><ul>\n<li>Enable <strong>2FA (two-factor authentication)<\/strong> for the domain management account<\/li>\n<li>Always use a strong password, change it every 6 months<\/li>\n<li>Enable domain lock as soon as you register the domain<\/li>\n<li>Set up email alerts when information changes<\/li>\n<\/ul><h3>Periodic information checklist<\/h3><table class=\"WordPress\">\n<thead>\n<tr>\n<th>Item to check<\/th>\n<th>Recommended frequency<\/th>\n<th>Note<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>WHOIS information<\/td>\n<td>Every 3 months<\/td>\n<td>Check name, email, address<\/td>\n<\/tr>\n<tr>\n<td>Domain lock<\/td>\n<td>After each change<\/td>\n<td>Ensure it is not unintentionally unlocked<\/td>\n<\/tr>\n<tr>\n<td>Security alert<\/td>\n<td>Monthly<\/td>\n<td>View activity log<\/td>\n<\/tr>\n<\/tbody>\n<\/table><h3>Warning: Common risks<\/h3><p>\u2013 Illegally transferred due to expired or hacked emails<br>\n\u2013 Temporary loss of ownership because of incorrect WHOIS information \u2013 violating ICANN regulations<br>\n\u2013 Loss of traffic and reputation if the domain expires without timely renewal  <\/p><div class=\"wp-block-group has-background\">\n<p><strong>Tip:<\/strong> Register the domain for at least 2-3 years and enable auto-renewal to avoid interruptions.<\/p>\n<\/div><h3>Takeaway:<\/h3><p>The <strong>effective domain management and security<\/strong> is not only a legal responsibility but also a vital factor for your digital brand. Setting up periodic maintenance reminders like server check schedules will help you minimize risks and better protect your online assets.<br><img decoding=\"async\" class=\"kimage_class\" src=\"https:\/\/dps.media\/wp-content\/uploads\/2025\/08\/on-age.jpg\" alt=\"Optimize domain management processes to enhance online brand reputation\" title=\"\"><\/p><h2 id=\"toi-uu-hoa-quy-trinh-quan-ly-ten-mien-de-nang-cao-uy-tin-thuong-hieu-truc-tuyen\">Optimize domain management processes to enhance online brand reputation<\/h2><h3>Why should you manage your domain strictly?<\/h3><p>Domain management is not just a mandatory technical step, but also a strategic factor to safeguard brand image. According to Cisco's Global Cybersecurity Report (2023), over 33% of phishing incidents stem from poor domain control.<\/p><p>A recent example is a local retail business losing control of its main domain simply because it expired and was not renewed in time. Result: lost 63% of organic traffic in just 2 weeks.<\/p><div class=\"wp-block-group has-background\" style=\"background-color:#f5f5f5;padding:10px\">\n  <strong>TIP:<\/strong> Always enable auto-renewal with email alerts 30 days in advance.\n<\/div><h3>Suggested standard process to optimize domain management<\/h3><p>Below is a suggested checklist to help you effectively control domain activities and protect your brand:<\/p><ul>\n<li>\u2714 Periodically check WHOIS registration information (at least once every quarter)<\/li>\n<li>\u2714 Enable Domain Lock to prevent unauthorized transfers<\/li>\n<li>\u2714 Use a general company email for registration \u2013 avoid using personal emails<\/li>\n<li>\u2714 Update DNS accurately, avoid incorrect pointing or exposing internal structure<\/li>\n<li>\u2714 Set up 2FA for domain management accounts<\/li>\n<\/ul><h3>Centralized multi-platform domain administration<\/h3><p>If your business owns multiple domains for sub-brands or marketing campaigns, you should centralize management using a dashboard or centralized service. Some platforms like Google Domains or Namecheap allow you to sync and monitor all domains on one console.<\/p><p>Example of a domain management statistics table:<\/p><table class=\"wordpress\">\n<thead>\n<tr>\n<th>Domain name<\/th>\n<th>Expiration date<\/th>\n<th>Status<\/th>\n<th>Domain Lock<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>thuonghieuabc.vn<\/td>\n<td>10\/11\/2024<\/td>\n<td>Active<\/td>\n<td>\u2714<\/td>\n<\/tr>\n<tr>\n<td>event2024.com<\/td>\n<td>03\/03\/2025<\/td>\n<td>Active<\/td>\n<td>\u2714<\/td>\n<\/tr>\n<tr>\n<td>archived-project.net<\/td>\n<td>12\/07\/2023<\/td>\n<td>Expired<\/td>\n<td>\u2718<\/td>\n<\/tr>\n<\/tbody>\n<\/table><h3>Warning: Commonly overlooked risks<\/h3><p>\u2013 Registering a domain name but not protecting WHOIS information \u2192 Easily exploited by competitors.<br>\n\u2013 Not updating ownership when personnel changes \u2192 Risk of losing ownership rights.<br>\n\u2013 Using unofficial providers \u2192 Difficult to regain control when disputes occur.<\/p><div class=\"wp-block-group has-background\" style=\"background-color:#f1f9ff;padding:10px\">\n  <strong>Note:<\/strong> When transferring domain ownership, always have confirmation via valid authorization email.<\/div><h3>Key takeaway<\/h3><p>A clear, <a href=\"https:\/\/dps.media\/en\/bulk-dns-lookup-optimized-solution-for-domain-name-management\/\" rel=\"nofollow\">secure, and regularly controlled domain management process will help your online brand maintain credibility<\/a>, avoid hijacking, and effectively support long-term marketing and brand recognition.<br><img decoding=\"async\" class=\"kimage_class\" src=\"https:\/\/dps.media\/wp-content\/uploads\/2025\/08\/domain.jpgfee0.jpg\" alt=\"Reliable tools and software to check and secure domains for small businesses\" title=\"\"><\/p><h2 id=\"cong-cu-va-phan-mem-ho-tro-kiem-tra-va-bao-mat-ten-mien-dang-tin-cay-cho-doanh-nghiep-nho\">Reliable tools and software to check and secure domains for small businesses<\/h2><h3>Free domain information checking tools<\/h3><p>To clearly understand the status and history of your domain, you need to regularly use information lookup tools. Some free, easy-to-use solutions:<\/p><ul>\n<li><strong>Whois Lookup<\/strong> (ICANN, Whois.com): Lookup owner information, registration date, provider.<\/li>\n<li><strong>DomainTools<\/strong>: Provides trust scores and domain update history.<\/li>\n<li><strong>MXToolbox<\/strong>: Check DNS setup, blacklist, and email servers related to the domain.<\/li>\n<\/ul><div class=\"wp-block-group has-background\">\n<p><strong>\ud83d\udca1 Tip:<\/strong> It is recommended to check periodically every 3 months to detect unusual changes due to hackers or unauthorized transfers.<\/p>\n<\/div><h3>Domain security software for SMEs<\/h3><p>Small businesses are often targets of domain attacks because they invest less in security. Some reliable software to consider:<\/p><ul>\n<li><strong>Cloudflare<\/strong>: DNS protection, DDoS prevention, helps speed up connections.<\/li>\n<li><strong>Google Domains (or Google Workspace)<\/strong>: Integrates two-factor authentication and abnormal activity alerts.<\/li>\n<li><strong>SSL Labs by Qualys<\/strong>: Assess the strength of SSL certificates.<\/li>\n<\/ul><h3>Quarterly domain management and security checklist<\/h3><p>The table below is a simple quarterly checklist:<\/p><table class=\"wordpress\">\n<thead>\n<tr>\n<th>Category<\/th>\n<th>Time<\/th>\n<th>Status<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Domain renewal<\/td>\n<td>30 days before expiration<\/td>\n<td>\u2705 \/ \u26d4<\/td>\n<\/tr>\n<tr>\n<td>Update WHOIS contact information<\/td>\n<td>Every 3 months<\/td>\n<td>\u2705 \/ \u26d4<\/td>\n<\/tr>\n<tr>\n<td>Check DNS settings<\/td>\n<td>Quarterly<\/td>\n<td>\u2705 \/ \u26d4<\/td>\n<\/tr>\n<tr>\n<td>Check SSL certificate operation<\/td>\n<td>Quarterly<\/td>\n<td>\u2705 \/ \u26d4<\/td>\n<\/tr>\n<\/tbody>\n<\/table><h3>Real-life example: Small vulnerability, big loss<\/h3><p>In 2022, an SME in the interior design sector let their domain expire for 3 days due to forgetting to renew it. Another party bought the domain and exploited its previous reputation to scam customers via email. This incident caused losses of over 80 million VND and nearly a month of suspended sales operations (Source: VietnamBiz, 2022).<\/p><div class=\"wp-block-group has-background\">\n<p><strong>\u26a0\ufe0f Warning:<\/strong> Expired domain names will become public property \u2013 anyone can buy them back and use them for the wrong purposes.<\/p>\n<\/div><h3>Brief takeaway<\/h3><p>Businesses should proactively use domain checking tools and regularly implement domain security solutions. This is not only part of digital brand protection, but also an essential defense layer against increasing technological risks. <\/p><h2 id=\"outro\">Sincere feedback<\/h2><p>Checking domain information helps businesses control ownership and minimize security risks. Proper domain management is the first step in a sustainable digital marketing strategy.<\/p><p>Start reviewing the information of the domains you own. Update admin contacts, set up security, and register for the long term to ensure absolute safety. You should also learn about SSL, DNS, and effective hosting management. These are important factors directly related to your website\u2019s performance and reliability.<\/p><p>DPS.MEDIA is always ready to accompany Vietnamese businesses on their digital transformation journey. Don\u2019t forget to leave a comment if you have questions or want to share your experience about domains! <\/p>\n<style>\r\n.lwrp.link-whisper-related-posts{\r\n            \r\n            margin-top: 40px;\nmargin-bottom: 30px;\r\n        }\r\n        .lwrp .lwrp-title{\r\n            \r\n            \r\n        }.lwrp .lwrp-description{\r\n            \r\n            \r\n\r\n        }\r\n        .lwrp .lwrp-list-container{\r\n        }\r\n        .lwrp .lwrp-list-multi-container{\r\n            display: flex;\r\n        }\r\n        .lwrp .lwrp-list-double{\r\n            width: 48%;\r\n        }\r\n        .lwrp .lwrp-list-triple{\r\n            width: 32%;\r\n        }\r\n        .lwrp .lwrp-list-row-container{\r\n            display: flex;\r\n            justify-content: space-between;\r\n        }\r\n        .lwrp .lwrp-list-row-container .lwrp-list-item{\r\n            width: calc(33% - 20px);\r\n        }\r\n        .lwrp .lwrp-list-item:not(.lwrp-no-posts-message-item){\r\n   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