Registry · RDAP Original response
https://rdap.arin.net/registry/ip/131.142.0.0/16
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "131.142.0.0",
"length": 16
}
],
"endAddress": "131.142.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-05-12T09:20:32-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-05-12T14:30:42-04:00"
}
],
"handle": "SAAP-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SAAP-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.142.0.0/16"
},
{
"href": "https://whois.arin.net/rest/poc/SAAP-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.142.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "60 Garden Street\nCambridge\nMA\n02138\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"SAO Admin Abuse POC"
],
[
"org",
[],
"text",
"Smithsonian Astrophysical Observatory"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"achesleigh@cfa.harvard.edu"
],
[
"email",
[],
"text",
"sao-arin-abuse@cfa.harvard.edu"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-617-496-7931"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-05-12T14:23:40-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-05-12T14:24:51-04:00"
}
],
"handle": "SAP26-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SAP26-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.142.0.0/16"
},
{
"href": "https://whois.arin.net/rest/poc/SAP26-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.142.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"administrative",
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "60 Garden Street\nCambridge\nMA\n02138\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"SAO Admin POC"
],
[
"org",
[],
"text",
"Smithsonian Astrophysical Observatory"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"achesleigh@cfa.harvard.edu"
],
[
"email",
[],
"text",
"sao-arin@cfa.harvard.edu"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-617-496-7931"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-05-12T14:34:06-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-11-17T13:44:17-05:00"
}
],
"handle": "SI-2-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SI-2-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.142.0.0/16"
},
{
"href": "https://whois.arin.net/rest/org/SI-2-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.142.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Smithsonian Astrophysical Observatory"
],
[
"adr",
{
"label": "60 Garden St.\nCambridge\nMA\n02138\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-01-06T09:15:38-05:00"
},
{
"eventAction": "registration",
"eventDate": "1997-10-08T10:50:08-04:00"
}
],
"handle": "RAH81-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/RAH81-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.142.0.0/16"
},
{
"href": "https://whois.arin.net/rest/poc/RAH81-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.142.0.0/16"
}
],
"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 2026-01-06"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "Smithsonian Astrophysical Observatory\n60 Garden St.\nCambridge\nMA\n02138\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Robert A Hewett"
],
[
"n",
[],
"text",
[
"Hewett",
"Robert",
"A",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"rhewett@cfa.harvard.edu"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-617-384-6594"
],
[
"tel",
{
"type": [
"work",
"fax"
]
},
"text",
"+1-617-496-7500"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-12-18T07:13:27-05:00"
},
{
"eventAction": "registration",
"eventDate": "1988-11-21T00:00:00-05:00"
}
],
"handle": "NET-131-142-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/131.142.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.142.0.0/16"
},
{
"href": "https://whois.arin.net/rest/net/NET-131-142-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.142.0.0/16"
}
],
"name": "CFA-NET",
"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/ip/131.142.0.0/16"
}
],
"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/ip/131.142.0.0/16"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-131-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "131.142.0.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}