Whois & RDAP Lookup

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163.53.88.0/21

RDAP
IP Range163.0.0.0 - 163.255.255.255
Handle163.0.0.0 - 163.255.255.255
NameERX-NETBLOCK
TypeALLOCATED PORTABLE
CountryAU
Registered2008-09-04 06:51 UTC
Updated2021-04-16 06:53 UTC
Admin ContactInternet Assigned Numbers Authority
Addresssee http://www.iana.org.
Tech ContactInternet Assigned Numbers Authority
Addresssee http://www.iana.org.
Abuse Contact[email protected]
Statusadministrative
Registry RDAPhttps://rdap.apnic.net
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Raw WHOIS response

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to '163.53.88.0 - 163.53.91.255'

% Abuse contact for '163.53.88.0 - 163.53.91.255' is '[email protected]'

inetnum:        163.53.88.0 - 163.53.91.255
netname:        VClouD
descr:          Beijing Internet Harbor Technology Co.,Ltd
descr:          Level 8,Building1,Wanda Plaza NO.93 JianGuo Road
descr:          Chaoyang District Beijing,China
country:        CN
admin-c:        ML1852-AP
tech-c:         BW707-AP
abuse-c:        AC1601-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-CNNIC-AP
mnt-irt:        IRT-VCLOUD-CN
mnt-lower:      MAINT-CNNIC-AP
mnt-routes:     MAINT-CNNIC-AP
last-modified:  2023-11-28T00:57:09Z
source:         APNIC

irt:            IRT-VClouD-CN
address:        Level 8,Building1,Wanda Plaza NO.93 JianGuo Road Chaoyang District Beijing,China
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        ML1852-AP
tech-c:         BW707-AP
auth:           # Filtered
mnt-by:         MAINT-CNNIC-AP
last-modified:  2025-11-18T00:35:12Z
source:         APNIC

role:           ABUSE CNNICCN
country:        ZZ
address:        Beijing, China
phone:          +000000000
e-mail:         [email protected]
admin-c:        IP50-AP
tech-c:         IP50-AP
nic-hdl:        AC1601-AP
remarks:        Generated from irt object IRT-CNNIC-CN
remarks:        [email protected] is invalid
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-19T17:20:32Z
source:         APNIC

person:         Yanan Bao
address:        Level 8,Building1,Wanda Plaza NO.93 JianGuo Road Chaoyang District Beijing,China
country:        CN
phone:          +86-010-58203300
e-mail:         [email protected]
nic-hdl:        BW707-AP
mnt-by:         MAINT-CNNIC-AP
last-modified:  2013-02-27T02:04:01Z
source:         APNIC

person:         Zhiyuan Ren
address:        Level 8,Building1,Wanda Plaza NO.93 JianGuo Road
address:        Chaoyang District Beijing,China
country:        CN
phone:          +86-010-58203300
e-mail:         [email protected]
nic-hdl:        ML1852-AP
mnt-by:         MAINT-CNNIC-AP
last-modified:  2016-01-08T02:54:01Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-SG1)

% Query time: 658 msec
% WHEN: Wed Sep 16 14:17:26 UTC 2026
Raw RDAP JSON (registry) https://rdap.apnic.net
{
  "cidr0_cidrs": [
    {
      "length": 8,
      "v4prefix": "163.0.0.0"
    }
  ],
  "country": "AU",
  "endAddress": "163.255.255.255",
  "entities": [
    {
      "events": [
        {
          "eventAction": "registration",
          "eventDate": "2008-09-04T07:54:16Z"
        },
        {
          "eventAction": "last changed",
          "eventDate": "2018-06-22T22:34:30Z"
        }
      ],
      "handle": "IANA1-AP",
      "links": [
        {
          "href": "https://rdap.apnic.net/entity/IANA1-AP",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.apnic.net/ip/163.53.88.0/21"
        }
      ],
      "objectClassName": "entity",
      "remarks": [
        {
          "description": [
            "For more information on IANA services",
            "go to IANA web site at http://www.iana.org."
          ],
          "title": "remarks"
        }
      ],
      "roles": [
        "technical",
        "administrative"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "Internet Assigned Numbers Authority"
          ],
          [
            "kind",
            {},
            "text",
            "group"
          ],
          [
            "adr",
            {
              "label": "see http://www.iana.org."
            },
            "text",
            [
              "",
              "",
              "",
              "",
              "",
              "",
              ""
            ]
          ]
        ]
      ]
    },
    {
      "events": [
        {
          "eventAction": "registration",
          "eventDate": "2010-11-11T01:36:22Z"
        },
        {
          "eventAction": "last changed",
          "eventDate": "2025-11-18T00:26:21Z"
        }
      ],
      "handle": "IRT-APNIC-AP",
      "links": [
        {
          "href": "https://rdap.apnic.net/entity/IRT-APNIC-AP",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.apnic.net/ip/163.53.88.0/21"
        }
      ],
      "objectClassName": "entity",
      "remarks": [
        {
          "description": [
            "APNIC is a Regional Internet Registry.",
            "We do not operate the referring network and",
            "are unable to investigate complaints of network abuse.",
            "For information about IRT, see www.apnic.net/irt",
            "[email protected] was validated on 2020-02-03"
          ],
          "title": "remarks"
        }
      ],
      "roles": [
        "abuse"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "IRT-APNIC-AP"
          ],
          [
            "kind",
            {},
            "text",
            "group"
          ],
          [
            "adr",
            {
              "label": "Brisbane, Australia"
            },
            "text",
            [
              "",
              "",
              "",
              "",
              "",
              "",
              ""
            ]
          ],
          [
            "email",
            {},
            "text",
            "[email protected]"
          ],
          [
            "email",
            {
              "pref": "1"
            },
            "text",
            "[email protected]"
          ]
        ]
      ]
    }
  ],
  "events": [
    {
      "eventAction": "registration",
      "eventDate": "2008-09-04T06:51:29Z"
    },
    {
      "eventAction": "last changed",
      "eventDate": "2021-04-16T06:53:35Z"
    }
  ],
  "handle": "163.0.0.0 - 163.255.255.255",
  "ipVersion": "v4",
  "links": [
    {
      "href": "https://rdap.apnic.net/ip/163.0.0.0/8",
      "rel": "self",
      "type": "application/rdap+json",
      "value": "https://rdap.apnic.net/ip/163.53.88.0/21"
    }
  ],
  "name": "ERX-NETBLOCK",
  "notices": [
    {
      "description": [
        "Objects returned came from source",
        "APNIC"
      ],
      "title": "Source"
    },
    {
      "description": [
        "This is the APNIC WHOIS Database query service. The objects are in RDAP format."
      ],
      "links": [
        {
          "href": "http://www.apnic.net/db/dbcopyright.html",
          "rel": "terms-of-service",
          "type": "text/html",
          "value": "https://rdap.apnic.net/ip/163.53.88.0/21"
        }
      ],
      "title": "Terms and Conditions"
    },
    {
      "description": [
        "If you see inaccuracies in the results, please visit: "
      ],
      "links": [
        {
          "href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
          "rel": "inaccuracy-report",
          "type": "text/html",
          "value": "https://rdap.apnic.net/ip/163.53.88.0/21"
        }
      ],
      "title": "Whois Inaccuracy Reporting"
    }
  ],
  "objectClassName": "ip network",
  "port43": "whois.apnic.net",
  "rdapConformance": [
    "history_version_0",
    "nro_rdap_profile_0",
    "cidr0",
    "rdap_level_0"
  ],
  "remarks": [
    {
      "description": [
        "Early registration addresses"
      ],
      "title": "description"
    },
    {
      "description": [
        "------------------------------------------------------",
        "Important:",
        "",
        "Networks in this range were allocated by InterNIC",
        "prior to the formation of Regional Internet",
        "Registries (RIRs): AfriNIC, APNIC, ARIN, LACNIC and RIPE NCC.",
        "",
        "Address ranges from this historical space have now",
        "been transferred to the appropriate RIR database.remarks:",
        "If your search has returned this record, it means the",
        "address range is not administered by APNIC.",
        "",
        "Instead, please search one of the following databases:",
        "",
        "- AfriNIC (Africa)",
        "website: http://www.afrinic.net/",
        "command line: whois.afrinic.net",
        "",
        "- ARIN (Northern America)",
        "website: http://www.arin.net/",
        "command line: whois.arin.net",
        "",
        "- LACNIC (Latin America and the Carribean)",
        "website: http://www.lacnic.net/",
        "command line: whois.lacnic.net",
        "",
        "- RIPE NCC (Europe)",
        "website: http://www.ripe.net/",
        "command line: whois.ripe.net",
        "",
        "For information on the Early Registration Transfer",
        "(ERX) project, see:",
        "",
        "http://www.apnic.net/db/erx",
        "",
        "------------------------------------------------------"
      ],
      "title": "remarks"
    }
  ],
  "startAddress": "163.0.0.0",
  "status": [
    "administrative"
  ],
  "type": "ALLOCATED PORTABLE"
}

Frequently asked questions

What is WHOIS?

WHOIS is a public directory that answers "who is responsible for this?" for domains, IP ranges and ASNs. It lists registration dates, the registrar, nameservers and contacts.

What is RDAP, and how does it differ?

RDAP is the modern replacement for WHOIS. It returns the same records in a structured, consistent format. We query RDAP first and fall back to classic WHOIS text when a registry has not adopted it yet.

What is the difference between a registrar and a registrant?

The registrar is the company you register and manage a domain through, such as xTom or GoDaddy. The registrant is the person or organization that actually holds the domain.

What are nameservers?

Nameservers answer DNS questions for a domain and decide which IP addresses the name resolves to. They also show which DNS provider the domain uses.

What is DNSSEC?

DNSSEC adds cryptographic signatures to DNS answers so they cannot be quietly altered in transit. "Signed" means the domain has it enabled, "unsigned" means it does not.

Why is the contact information redacted?

Privacy laws such as GDPR require registrars to hide most personal details in public records. The abuse contact is usually still shown, so a domain or network can be reported when something goes wrong.