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AS WHOIS
Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
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AS12
NYU-DOMAIN - New York University Announcing routesAS nameNYU-DOMAIN
OrganisationNew York University
Registry (RIR)ARIN
HandleAS12
RangeAS12
Registered05 Jul 1984
Last changed26 May 2023
Abuse contact[email protected]
12IPv4 prefixes
1IPv6 prefixes
9Upstreams
1Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS3257 | GTT-BACKBONE GTT Communications Inc. | 493 |
| AS6461 | ZAYO-6461 - Zayo Bandwidth | 412 |
| AS3356 | LEVEL3 - Level 3 Parent, LLC | 361 |
| AS3269 | ASN-IBSNAZ Telecom Italia S.p.A. | 187 |
| AS46887 | CROWNCASTLE-AS46887 - Crown Castle Fiber LLC | 145 |
| AS8220 | COLT COLT Technology Services Group Limited | 102 |
| AS137 | ASGARR Consortium GARR | 82 |
| AS3754 | NYSERNET3-AS - NYSERNet | 22 |
| AS286 | KPN GTT Communications Inc. | 4 |
Downstreams
| AS | Network name | Visibility |
|---|---|---|
| AS394666 | NYU-HOSPITALS-CENTER - NYU Langone Health | 758 |
IPv4 prefixes (12)
IPv6 prefixes (1)
RPKI-validate all prefixes of AS12
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | New York University | NYU-Z | 726 Broadway, 8th Floor - ITS, New York, NY, 10003, United States | |
| noc, technical | Communications Operations Services - ITS | COSI-ARIN | [email protected], +1-212-998-3444 | 1 Metrotech Center, 22nd Floor, Brooklyn, NY, 11201, United States |
| administrative | Information Technology Services | ITS18-ARIN | [email protected], +1-212-998-3431 | 1 Metrotech Center, 22nd Floor, Brooklyn, NY, 11201, United States |
| abuse | Office of Information Security | OIS9-ARIN | [email protected], +1-212-998-3333 | 726 Broadway, 2nd Floor, NYU IT, New York, NY, 10003, United States |
| technical, noc | Communications Operations Services - ITS | COSI-ARIN | [email protected], +1-212-998-3444 | 1 Metrotech Center, 22nd Floor, Brooklyn, NY, 11201, United States |
Raw registry response
{
"endAutnum": 12,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-31T09:24:42-04:00"
},
{
"eventAction": "registration",
"eventDate": "2006-12-14T18:00:06-05:00"
}
],
"handle": "COSI-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/COSI-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12"
},
{
"href": "https://whois.arin.net/rest/poc/COSI-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Please query Merit's RADb for up to date information on allocations, routing policy, and contacts.",
"",
"whois -h whois.radb.net",
"",
"www.ra.net"
],
"title": "Registration Comments"
}
],
"roles": [
"noc",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1 Metrotech Center, 22nd Floor\nBrooklyn\nNY\n11201\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Communications Operations Services - ITS"
],
[
"org",
[],
"text",
"New York University"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-212-998-3444"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-31T09:24:57-04:00"
},
{
"eventAction": "registration",
"eventDate": "2006-12-14T17:42:08-05:00"
}
],
"handle": "ITS18-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ITS18-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12"
},
{
"href": "https://whois.arin.net/rest/poc/ITS18-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Please query Merit's RADb for up to date information on allocations, routing policy, and contacts.",
"",
"whois -h whois.radb.net",
"",
"www.ra.net"
],
"title": "Registration Comments"
}
],
"roles": [
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1 Metrotech Center, 22nd Floor\nBrooklyn\nNY\n11201\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Information Technology Services"
],
[
"org",
[],
"text",
"New York University"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-212-998-3431"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2019-02-26T13:39:23-05:00"
},
{
"eventAction": "registration",
"eventDate": "2017-11-27T13:19:33-05:00"
}
],
"handle": "OIS9-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/OIS9-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12"
},
{
"href": "https://whois.arin.net/rest/poc/OIS9-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2020-02-26"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "726 Broadway\n2nd Floor, NYU IT\nNew York\nNY\n10003\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Office of Information Security"
],
[
"org",
[],
"text",
"New York University"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-212-998-3333"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-05-15T16:19:32-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-05-15T16:19:32-04:00"
}
],
"handle": "NYU-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NYU-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12"
},
{
"href": "https://whois.arin.net/rest/org/NYU-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"New York University"
],
[
"adr",
{
"label": "726 Broadway, 8th Floor - ITS\nNew York\nNY\n10003\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-31T09:24:42-04:00"
},
{
"eventAction": "registration",
"eventDate": "2006-12-14T18:00:06-05:00"
}
],
"handle": "COSI-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/COSI-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12"
},
{
"href": "https://whois.arin.net/rest/poc/COSI-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Please query Merit's RADb for up to date information on allocations, routing policy, and contacts.",
"",
"whois -h whois.radb.net",
"",
"www.ra.net"
],
"title": "Registration Comments"
}
],
"roles": [
"technical",
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1 Metrotech Center, 22nd Floor\nBrooklyn\nNY\n11201\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Communications Operations Services - ITS"
],
[
"org",
[],
"text",
"New York University"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-212-998-3444"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-05-25T16:23:22-04:00"
},
{
"eventAction": "registration",
"eventDate": "1984-07-05T00:00:00-04:00"
}
],
"handle": "AS12",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/12",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12"
},
{
"href": "https://whois.arin.net/rest/asn/AS12",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12"
}
],
"name": "NYU-DOMAIN",
"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/12"
}
],
"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/12"
}
],
"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": 12,
"status": [
"active"
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.