AS4538

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      "title": "Source",
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        "APNIC"
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    },
    {
      "title": "Terms and Conditions",
      "description": [
        "This is the APNIC WHOIS Database query service. The objects are in RDAP format."
      ],
      "links": [
        {
          "value": "https://rdap.apnic.net/autnum/4538",
          "rel": "terms-of-service",
          "href": "http://www.apnic.net/db/dbcopyright.html",
          "type": "text/html"
        }
      ]
    },
    {
      "title": "Whois Inaccuracy Reporting",
      "description": [
        "If you see inaccuracies in the results, please visit: "
      ],
      "links": [
        {
          "value": "https://rdap.apnic.net/autnum/4538",
          "rel": "inaccuracy-report",
          "href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
          "type": "text/html"
        }
      ]
    }
  ],
  "country": "CN",
  "name": "ERX-CERNET-BKB",
  "status": [
    "active"
  ],
  "events": [
    {
      "eventAction": "registration",
      "eventDate": "2008-09-04T06:40:34Z"
    },
    {
      "eventAction": "last changed",
      "eventDate": "2025-10-31T08:14:57Z"
    }
  ],
  "links": [
    {
      "value": "https://rdap.apnic.net/autnum/4538",
      "rel": "self",
      "href": "https://rdap.apnic.net/autnum/4538",
      "type": "application/rdap+json"
    }
  ],
  "remarks": [
    {
      "description": [
        "China Education and Research Network Center",
        "Tsinghua University",
        "Beijing 100084"
      ],
      "title": "description"
    },
    {
      "description": [
        "This aut-num object created as part of",
        "the ER-Transfer from ARIN"
      ],
      "title": "remarks"
    }
  ],
  "entities": [
    {
      "roles": [
        "administrative",
        "technical"
      ],
      "events": [
        {
          "eventAction": "registration",
          "eventDate": "2008-09-04T07:54:16Z"
        },
        {
          "eventAction": "last changed",
          "eventDate": "2020-09-03T09:14:12Z"
        }
      ],
      "links": [
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          "value": "https://rdap.apnic.net/autnum/4538",
          "rel": "self",
          "href": "https://rdap.apnic.net/entity/CER-AP",
          "type": "application/rdap+json"
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      ],
      "remarks": [
        {
          "description": [
            "[email protected]"
          ],
          "title": "remarks"
        }
      ],
      "handle": "CER-AP",
      "objectClassName": "entity",
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "CERNET Helpdesk"
          ],
          [
            "kind",
            {},
            "text",
            "group"
          ],
          [
            "adr",
            {
              "label": "CERNET Center\nBeijing 100084, China"
            },
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          [
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            "text",
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          [
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              "type": "fax"
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    {
      "roles": [
        "abuse"
      ],
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        {
          "eventAction": "registration",
          "eventDate": "2010-11-26T03:14:01Z"
        },
        {
          "eventAction": "last changed",
          "eventDate": "2026-09-10T07:51:56Z"
        }
      ],
      "links": [
        {
          "value": "https://rdap.apnic.net/autnum/4538",
          "rel": "self",
          "href": "https://rdap.apnic.net/entity/IRT-CERNET-AP",
          "type": "application/rdap+json"
        }
      ],
      "remarks": [
        {
          "description": [
            "timezone GMT+8",
            "[email protected] was validated on 2026-09-10"
          ],
          "title": "remarks"
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      "handle": "IRT-CERNET-AP",
      "objectClassName": "entity",
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            "text",
            "IRT-CERNET-AP"
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            "kind",
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            "text",
            "group"
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            "adr",
            {
              "label": "Network Center,\nFIT-3-220, Tsinghua Univ\nBeijing 100084, China"
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              "",
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              "",
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            "text",
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            "text",
            "+86-10-62785933"
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            "email",
            {},
            "text",
            "[email protected]"
          ],
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            "email",
            {
              "pref": "1"
            },
            "text",
            "[email protected]"
          ]
        ]
      ]
    }
  ],
  "handle": "AS4538",
  "startAutnum": 4538,
  "endAutnum": 4538,
  "objectClassName": "autnum",
  "port43": "whois.apnic.net"
}