RDAP/WHOIS Information
{
"handle": "NET-216-73-216-0-1",
"links": [
{
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/216.73.216.139",
"rel": "self",
"href": "https://rdap.arin.net/registry/ip/216.73.216.0"
},
{
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/216.73.216.139",
"rel": "alternate",
"href": "https://whois.arin.net/rest/net/NET-216-73-216-0-1"
},
{
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/216.73.216.139",
"rel": "up",
"href": "https://rdap.arin.net/registry/ip/216.73.208.0/21"
}
],
"name": "AWS-ANTHROPIC",
"status": [
"active"
],
"type": "ASSIGNMENT",
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-06-05T12:42:32-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-06-05T12:42:32-04:00"
}
],
"entities": [
{
"handle": "AP-2440",
"links": [
{
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/216.73.216.139",
"rel": "self",
"href": "https://rdap.arin.net/registry/entity/AP-2440"
},
{
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/216.73.216.139",
"rel": "alternate",
"href": "https://whois.arin.net/rest/org/AP-2440"
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-08-22T17:10:25-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-07-31T16:51:11-04:00"
}
],
"entities": [
{
"handle": "ANTHR5-ARIN",
"links": [
{
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/216.73.216.139",
"rel": "self",
"href": "https://rdap.arin.net/registry/entity/ANTHR5-ARIN"
},
{
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/216.73.216.139",
"rel": "alternate",
"href": "https://whois.arin.net/rest/poc/ANTHR5-ARIN"
}
],
"status": [
"validated"
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-08-14T16:34:43-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-07-31T16:45:12-04:00"
}
],
"roles": [
"routing",
"technical",
"administrative",
"noc",
"abuse",
"dns"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "548 Market St.\nPMB 90375\nSan Francisco\nCA\n94104-5401\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Anthropic"
],
[
"org",
{},
"text",
"Anthropic"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"arin@anthropic.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-415-236-0599"
]
]
],
"port43": "whois.arin.net",
"objectClassName": "entity"
}
],
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Anthropic, PBC"
],
[
"adr",
{
"label": "548 Market St.\nPMB 90375\nSan Francisco\nCA\n94104-5401\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
],
"port43": "whois.arin.net",
"objectClassName": "entity"
}
],
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"notices": [
{
"links": [
{
"type": "text/html",
"value": "https://rdap.arin.net/registry/ip/216.73.216.139",
"rel": "terms-of-service",
"href": "https://www.arin.net/resources/registry/whois/tou/"
}
],
"description": [
"By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
],
"title": "Terms of Service"
},
{
"links": [
{
"type": "text/html",
"value": "https://rdap.arin.net/registry/ip/216.73.216.139",
"rel": "inaccuracy-report",
"href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/"
}
],
"description": [
"If you see inaccuracies in the results, please visit: "
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2025, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"startAddress": "216.73.216.0",
"endAddress": "216.73.219.255",
"ipVersion": "v4",
"parentHandle": "NET-216-73-208-0-1",
"port43": "whois.arin.net",
"objectClassName": "ip network",
"cidr0_cidrs": [
{
"length": 22,
"v4prefix": "216.73.216.0"
}
],
"arin_originas0_originautnums": []
}