Whois & RDAP Lookup

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claude.ai

RDAP
Domainclaude.ai
Handlebe3cad9a48374aa88e0259e019d4270d-DONUTS
RegistrarMarkMonitor Inc. (IANA #292)
Registered2018-08-04 15:48 UTC
Expires2029-08-04 15:48 UTC
Updated2025-01-17 19:25 UTC
DNSSECUnsigned
RegistrantDomain Administrator
OrganizationAnthropic PBC
Phone+1.4153266303
AddressSan Francisco, CA, 94104
Admin ContactDomain Administrator
OrganizationAnthropic PBC
Phone+1.4153266303
AddressSan Francisco, CA, 94104
Tech ContactDomain Administrator
OrganizationAnthropic PBC
Phone+1.4153266303
AddressSan Francisco, CA, 94104
Abuse Contact[email protected]
Abuse Phone+1.2083895740
Statusclient delete prohibited
client transfer prohibited
client update prohibited
Nameserversisla.ns.cloudflare.com
randy.ns.cloudflare.com
Registry RDAPhttps://rdap.identitydigital.services
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Raw WHOIS response

Domain Name: claude.ai
Registry Domain ID: be3cad9a48374aa88e0259e019d4270d-DONUTS
Registrar WHOIS Server: whois.markmonitor.com
Registrar URL: http://www.markmonitor.com
Updated Date: 2025-01-17T19:25:43Z
Creation Date: 2018-08-04T15:48:43Z
Registry Expiry Date: 2029-08-04T15:48:44Z
Registrar: MarkMonitor Inc.
Registrar IANA ID: 292
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +1.2083895740
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Registry Registrant ID: 3c75800c8cc9471ea43e70fe86c91bad-DONUTS
Registrant Name: Domain Administrator
Registrant Organization: Anthropic PBC
Registrant Street: 548 Market St PMB 90375
Registrant City: San Francisco
Registrant State/Province: CA
Registrant Postal Code: 94104
Registrant Country: US
Registrant Phone: +1.4153266303
Registrant Phone Ext: 
Registrant Fax: 
Registrant Fax Ext: 
Registrant Email: [email protected]
Registry Admin ID: 3c75800c8cc9471ea43e70fe86c91bad-DONUTS
Admin Name: Domain Administrator
Admin Organization: Anthropic PBC
Admin Street: 548 Market St PMB 90375
Admin City: San Francisco
Admin State/Province: CA
Admin Postal Code: 94104
Admin Country: US
Admin Phone: +1.4153266303
Admin Phone Ext: 
Admin Fax: 
Admin Fax Ext: 
Admin Email: [email protected]
Registry Tech ID: 3c75800c8cc9471ea43e70fe86c91bad-DONUTS
Tech Name: Domain Administrator
Tech Organization: Anthropic PBC
Tech Street: 548 Market St PMB 90375
Tech City: San Francisco
Tech State/Province: CA
Tech Postal Code: 94104
Tech Country: US
Tech Phone: +1.4153266303
Tech Phone Ext: 
Tech Fax: 
Tech Fax Ext: 
Tech Email: [email protected]
Name Server: isla.ns.cloudflare.com
Name Server: randy.ns.cloudflare.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://icann.org/wicf/
>>> Last update of WHOIS database: 2026-08-07T08:39:17Z <<<

For more information on Whois status codes, please visit https://icann.org/epp

Terms of Use: Access to WHOIS information is provided to assist persons in determining the contents of a domain name registration record in the registry database. The data in this record is provided by Identity Digital or the Registry Operator for informational purposes only, and accuracy is not guaranteed. This service is intended only for query-based access. You agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to (a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the data recipient's own existing customers; or (b) enable high volume, automated, electronic processes that send queries or data to the systems of Registry Operator, a Registrar, or Identity Digital except as reasonably necessary to register domain names or modify existing registrations. When using the Whois service, please consider the following: The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritative for registered domain objects. The Whois service may be scheduled for downtime during production or OT&E maintenance periods. Queries to the Whois services are throttled. If too many queries are received from a single IP address within a specified time, the service will begin to reject further queries for a period of time to prevent disruption of Whois service access. Abuse of the Whois system through data mining is mitigated by detecting and limiting bulk query access from single sources. Where applicable, the presence of a [Non-Public Data] tag indicates that such data is not made publicly available due to applicable data privacy laws or requirements. Should you wish to contact the registrant, please refer to the Whois records available through the registrar URL listed above. Access to non-public data may be provided, upon request, where it can be reasonably confirmed that the requester holds a specific legitimate interest and a proper legal basis for accessing the withheld data. Access to this data provided by Identity Digital can be requested by submitting a request via the form found at https://www.identity.digital/about/policies/whois-layered-access/. The Registrar of Record identified in this output may have an RDDS service that can be queried for additional information on how to contact the Registrant, Admin, or Tech contact of the queried domain name. Identity Digital Inc. and Registry Operator reserve the right to modify these terms at any time. By submitting this query, you agree to abide by this policy.
Domain Name: claude.ai
Registry Domain ID: be3cad9a48374aa88e0259e019d4270d-DONUTS
Registrar WHOIS Server: whois.markmonitor.com
Registrar URL: http://www.markmonitor.com
Updated Date: 2025-02-28T16:09:49+0000
Creation Date: 2018-08-04T15:48:43+0000
Registrar Registration Expiration Date: 2029-08-04T15:48:44+0000
Registrar: MarkMonitor, Inc.
Registrar IANA ID: 292
Registrar Abuse Contact: https://corp.markmonitor.com/domain/ui/abuse-report
Registrar Abuse Contact Phone: +1.2086851750
Domain Status: clientUpdateProhibited (https://www.icann.org/epp#clientUpdateProhibited)
Domain Status: clientTransferProhibited (https://www.icann.org/epp#clientTransferProhibited)
Domain Status: clientDeleteProhibited (https://www.icann.org/epp#clientDeleteProhibited)
Registrant Organization: Anthropic PBC
Registrant Country: US
Registrant Email: Select Request Email Form at https://domains.markmonitor.com/whois/claude.ai
Tech Email: Select Request Email Form at https://domains.markmonitor.com/whois/claude.ai
Name Server: randy.ns.cloudflare.com
Name Server: isla.ns.cloudflare.com
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2026-08-07T08:39:17+0000 <<<

For more information on WHOIS status codes, please visit:
  https://www.icann.org/resources/pages/epp-status-codes

If you wish to contact this domain’s Registrant or Technical
contact, and such email address is not visible above, you may do so via our web
form, pursuant to ICANN’s Temporary Specification. To verify that you are not a
robot, please enter your email address to receive a link to a page that
facilitates email communication with the relevant contact(s).

Web-based WHOIS:
  https://domains.markmonitor.com/whois/contact/claude.ai

If you have a legitimate interest in viewing the non-public WHOIS details, send
your request and the reasons for your request to [email protected]
and specify the domain name in the subject line. We will review that request and
may ask for supporting documentation and explanation.

The data in MarkMonitor’s WHOIS database is provided for information purposes,
and to assist persons in obtaining information about or related to a domain
name’s registration record. While MarkMonitor believes the data to be accurate,
the data is provided "as is" with no guarantee or warranties regarding its
accuracy.

By submitting a WHOIS query, you agree that you will use this data only for
lawful purposes and that, under no circumstances will you use this data to:
  (1) allow, enable, or otherwise support the transmission by email, telephone,
or facsimile of mass, unsolicited, commercial advertising, or spam; or
  (2) enable high volume, automated, or electronic processes that send queries,
data, or email to MarkMonitor (or its systems) or the domain name contacts (or
its systems).

MarkMonitor reserves the right to modify these terms at any time.

By submitting this query, you agree to abide by this policy.

MarkMonitor Domain Management(TM)
Protecting companies and consumers in a digital world.

Visit MarkMonitor at https://www.markmonitor.com
Contact us at +1.8007459229
In Europe, at +44.02032062220

% Query time: 824 msec
% WHEN: Fri Aug 07 08:39:17 UTC 2026
Raw RDAP JSON (registry) https://rdap.identitydigital.services
{
  "entities": [
    {
      "handle": "3c75800c8cc9471ea43e70fe86c91bad-DONUTS",
      "objectClassName": "entity",
      "roles": [
        "registrant",
        "technical",
        "administrative"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "Domain Administrator"
          ],
          [
            "org",
            {
              "type": "work"
            },
            "text",
            "Anthropic PBC"
          ],
          [
            "tel",
            {
              "type": "voice"
            },
            "uri",
            "tel:+1.4153266303"
          ],
          [
            "email",
            {},
            "text",
            "[email protected]"
          ],
          [
            "adr",
            {
              "cc": "US"
            },
            "text",
            [
              "",
              "",
              [
                "548 Market St",
                "PMB 90375",
                ""
              ],
              "San Francisco",
              "CA",
              "94104",
              ""
            ]
          ]
        ]
      ]
    },
    {
      "entities": [
        {
          "objectClassName": "entity",
          "roles": [
            "abuse"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "fn",
                {},
                "text",
                ""
              ],
              [
                "tel",
                {
                  "type": "voice"
                },
                "uri",
                "tel:+1.2083895740"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ]
            ]
          ]
        }
      ],
      "handle": "292",
      "links": [
        {
          "href": "https://rdap.identitydigital.services/rdap/entity/292",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.identitydigital.services/rdap/entity/292"
        },
        {
          "href": "https://rdap.markmonitor.com/rdap/",
          "rel": "about",
          "type": "application/rdap+json",
          "value": "https://rdap.markmonitor.com/rdap/"
        }
      ],
      "objectClassName": "entity",
      "publicIds": [
        {
          "identifier": "292",
          "type": "IANA Registrar ID"
        }
      ],
      "roles": [
        "registrar"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "MarkMonitor Inc."
          ]
        ]
      ]
    }
  ],
  "events": [
    {
      "eventAction": "transfer",
      "eventDate": "2023-11-28T14:02:50.631Z"
    },
    {
      "eventAction": "expiration",
      "eventDate": "2029-08-04T15:48:44Z"
    },
    {
      "eventAction": "registration",
      "eventDate": "2018-08-04T15:48:43Z"
    },
    {
      "eventAction": "last changed",
      "eventDate": "2025-01-17T19:25:43.945Z"
    },
    {
      "eventAction": "last update of RDAP database",
      "eventDate": "2026-08-07T08:39:17.26Z"
    }
  ],
  "handle": "be3cad9a48374aa88e0259e019d4270d-DONUTS",
  "ldhName": "claude.ai",
  "links": [
    {
      "href": "https://rdap.markmonitor.com/rdap/domain/claude.ai",
      "rel": "related",
      "type": "application/rdap+json",
      "value": "https://rdap.identitydigital.services/rdap/domain/claude.ai"
    },
    {
      "href": "https://rdap.identitydigital.services/rdap/domain/claude.ai",
      "rel": "self",
      "type": "application/rdap+json",
      "value": "https://rdap.identitydigital.services/rdap/domain/claude.ai"
    }
  ],
  "nameservers": [
    {
      "handle": "46a65417f2ed445f9c7c2a124140216b-DONUTS",
      "ldhName": "isla.ns.cloudflare.com",
      "objectClassName": "nameserver",
      "status": [
        "associated"
      ],
      "unicodeName": "isla.ns.cloudflare.com"
    },
    {
      "handle": "73834dd4cd11450682b73906b5cbc465-DONUTS",
      "ldhName": "randy.ns.cloudflare.com",
      "objectClassName": "nameserver",
      "status": [
        "associated"
      ],
      "unicodeName": "randy.ns.cloudflare.com"
    }
  ],
  "notices": [
    {
      "description": [
        "Access to RDAP information is provided to assist persons in determining the contents of a domain name registration record in the registry database. The data in this record is provided by Identity Digital or, if the record pertains to a TLD not operated by Identity Digital, then the corresponding primary Registry Operator for informational purposes only, and neither Identity Digital nor the Registry Operator guarantee its accuracy. This service is intended only for query-based access. You agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to (a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the data recipient's own existing customers; or (b) enable high volume, automated, electronic processes that send queries or data to the systems of Identity Digital, a Registrar, or Registry Operator except as reasonably necessary to register domain names or modify existing registrations. When using the RDAP service, please consider the following: the RDAP service is not a replacement for standard EPP commands to the SRS service. RDAP is not considered authoritative for registered domain objects. The RDAP service may be scheduled for downtime during production or OT\u0026E maintenance periods. Queries to the RDAP services are throttled. If too many queries are received from a single IP address within a specified time, the service will begin to reject further queries for a period of time to prevent disruption of RDAP service access. Abuse of the RDAP system through data mining is mitigated by detecting and limiting bulk query access from single sources. Where applicable, the presence of a [Non-Public Data] tag indicates that such data is not made publicly available due to applicable data privacy laws or requirements. Should you wish to contact the registrant, please refer to the RDAP records available through the registrar URL listed above. Access to non-public data may be provided, upon request, where it can be reasonably confirmed that the requester holds a specific legitimate interest and a proper legal basis for accessing the withheld data. Access to the data provided by Identity Digital can be requested by submitting a request via the form found at https://www.identity.digital/about/policies/whois-layered-access/ Identity Digital Inc. and, if applicable, the primary Registry Operators reserve the right to modify these terms at any time. By submitting this query, you agree to abide by this policy."
      ],
      "links": [
        {
          "href": "https://www.identity.digital/policies/rdds-access-policy",
          "rel": "terms-of-service",
          "type": "text/html",
          "value": "https://rdap.identitydigital.services/rdap/domain/claude.ai"
        }
      ],
      "title": "Terms of Service"
    },
    {
      "description": [
        "For more information on domain status codes, please visit https://icann.org/epp"
      ],
      "links": [
        {
          "href": "https://icann.org/epp",
          "rel": "glossary",
          "type": "application/rdap+json",
          "value": "https://rdap.identitydigital.services/rdap/domain/claude.ai"
        }
      ],
      "title": "Status Codes"
    },
    {
      "description": [
        "URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf"
      ],
      "links": [
        {
          "href": "https://icann.org/wicf",
          "rel": "help",
          "type": "application/rdap+json",
          "value": "https://rdap.identitydigital.services/rdap/domain/claude.ai"
        }
      ],
      "title": "RDDS Inaccuracy Complaint Form"
    }
  ],
  "objectClassName": "domain",
  "rdapConformance": [
    "rdap_level_0",
    "icann_rdap_response_profile_1",
    "icann_rdap_technical_implementation_guide_1"
  ],
  "secureDNS": {
    "delegationSigned": false,
    "maxSigLife": 1
  },
  "status": [
    "client delete prohibited",
    "client transfer prohibited",
    "client update prohibited"
  ],
  "unicodeName": "claude.ai"
}

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.