Whois & RDAP Lookup
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RDAPRaw WHOIS response
# # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # ASNumber: 19750 ASName: AS-CRITEO ASHandle: AS19750 RegDate: 2009-11-05 Updated: 2023-04-20 Ref: https://rdap.arin.net/registry/autnum/19750 OrgName: Criteo Corp. OrgId: CRITE-6 Address: 411 High Street City: Palo Alto StateProv: CA PostalCode: 94301 Country: US RegDate: 2009-10-05 Updated: 2024-11-25 Ref: https://rdap.arin.net/registry/entity/CRITE-6 OrgNOCHandle: CRITE-ARIN OrgNOCName: Criteo Engineering OrgNOCPhone: +1-650-322-6159 OrgNOCEmail: [email protected] OrgNOCRef: https://rdap.arin.net/registry/entity/CRITE-ARIN OrgAbuseHandle: CRITE-ARIN OrgAbuseName: Criteo Engineering OrgAbusePhone: +1-650-322-6159 OrgAbuseEmail: [email protected] OrgAbuseRef: https://rdap.arin.net/registry/entity/CRITE-ARIN OrgRoutingHandle: CRITE-ARIN OrgRoutingName: Criteo Engineering OrgRoutingPhone: +1-650-322-6159 OrgRoutingEmail: [email protected] OrgRoutingRef: https://rdap.arin.net/registry/entity/CRITE-ARIN OrgDNSHandle: CRITE-ARIN OrgDNSName: Criteo Engineering OrgDNSPhone: +1-650-322-6159 OrgDNSEmail: [email protected] OrgDNSRef: https://rdap.arin.net/registry/entity/CRITE-ARIN OrgTechHandle: CRITE-ARIN OrgTechName: Criteo Engineering OrgTechPhone: +1-650-322-6159 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/CRITE-ARIN RNOCHandle: CRITE-ARIN RNOCName: Criteo Engineering RNOCPhone: +1-650-322-6159 RNOCEmail: [email protected] RNOCRef: https://rdap.arin.net/registry/entity/CRITE-ARIN RTechHandle: CRITE-ARIN RTechName: Criteo Engineering RTechPhone: +1-650-322-6159 RTechEmail: [email protected] RTechRef: https://rdap.arin.net/registry/entity/CRITE-ARIN RAbuseHandle: CRITE-ARIN RAbuseName: Criteo Engineering RAbusePhone: +1-650-322-6159 RAbuseEmail: [email protected] RAbuseRef: https://rdap.arin.net/registry/entity/CRITE-ARIN # # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # % Query time: 531 msec % WHEN: Fri Sep 25 18:51:58 UTC 2026
Raw RDAP JSON (registry) https://rdap.arin.net
{
"endAutnum": 19750,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-07-07T13:50:37-04:00"
},
{
"eventAction": "registration",
"eventDate": "2009-09-28T16:24:48-04:00"
}
],
"handle": "CRITE-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CRITE-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/19750"
},
{
"href": "https://whois.arin.net/rest/poc/CRITE-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/19750"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative",
"noc",
"abuse",
"routing",
"dns",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "387 Park Avenue South 11th and 12th floor\nNew York\nNY\n10016\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Criteo Engineering"
],
[
"org",
{},
"text",
"Criteo Corp."
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-322-6260;ext412"
],
[
"tel",
{
"type": [
"work",
"fax"
]
},
"text",
"+1-650-322-6159"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-11-25T11:09:46-05:00"
},
{
"eventAction": "registration",
"eventDate": "2009-10-05T14:45:09-04:00"
}
],
"handle": "CRITE-6",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CRITE-6",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/19750"
},
{
"href": "https://whois.arin.net/rest/org/CRITE-6",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/19750"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Criteo Corp."
],
[
"adr",
{
"label": "411 High Street\nPalo Alto\nCA\n94301\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-07-07T13:50:37-04:00"
},
{
"eventAction": "registration",
"eventDate": "2009-09-28T16:24:48-04:00"
}
],
"handle": "CRITE-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CRITE-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/19750"
},
{
"href": "https://whois.arin.net/rest/poc/CRITE-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/19750"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc",
"technical",
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "387 Park Avenue South 11th and 12th floor\nNew York\nNY\n10016\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Criteo Engineering"
],
[
"org",
{},
"text",
"Criteo Corp."
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-322-6260;ext412"
],
[
"tel",
{
"type": [
"work",
"fax"
]
},
"text",
"+1-650-322-6159"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-04-20T06:58:59-04:00"
},
{
"eventAction": "registration",
"eventDate": "2009-11-05T09:33:44-05:00"
}
],
"handle": "AS19750",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/19750",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/19750"
},
{
"href": "https://whois.arin.net/rest/asn/AS19750",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/19750"
}
],
"name": "AS-CRITEO",
"notices": [
{
"description": [
"By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/tou/",
"rel": "terms-of-service",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/19750"
}
],
"title": "Terms of Service"
},
{
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/19750"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"startAutnum": 19750,
"status": [
"active"
]
}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.