Registry · RDAP Original response
https://rdap.arin.net/registry/ip/35.0.0.0/16
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "35.0.0.0",
"length": 16
}
],
"endAddress": "35.0.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-05-01T08:39:49-04:00"
},
{
"eventAction": "registration",
"eventDate": "2007-01-31T09:54:13-05:00"
}
],
"handle": "INA18-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/INA18-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/35.0.0.0/16"
},
{
"href": "https://whois.arin.net/rest/poc/INA18-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/35.0.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "4251 Plymouth Road\nBuilding 3, Suite 1400\nAnn Arbor\nMI\n48105-3640\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Internet Numbers Administration"
],
[
"org",
[],
"text",
"University of Michigan"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"internet-numbers@umich.edu"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-734-647-4200"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-10-31T08:13:33-04:00"
},
{
"eventAction": "registration",
"eventDate": "2007-02-12T12:18:21-05:00"
}
],
"handle": "IAI8-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/IAI8-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/35.0.0.0/16"
},
{
"href": "https://whois.arin.net/rest/poc/IAI8-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/35.0.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "4251 Plymouth Road\nSuite 3-2100\nAnn Arbor\nMI\n48105-3640\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"IT Abuse Investigation"
],
[
"org",
[],
"text",
"University of Michigan"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"report-abuse@umich.edu"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-734-764-4357"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-03-20T09:07:41-04:00"
},
{
"eventAction": "registration",
"eventDate": "1997-09-30T09:05:56-04:00"
}
],
"handle": "UA11-ORG-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UA11-ORG-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/35.0.0.0/16"
},
{
"href": "https://whois.arin.net/rest/poc/UA11-ORG-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/35.0.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "4251 Plymouth Road\nBuilding 3, Suite 1400\nAnn Arbor\nMI\n48105-3640\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"UMnet Administration"
],
[
"org",
[],
"text",
"University of Michigan"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"umnet-admin-team@umich.edu"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-734-647-4200"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2017-01-28T08:32:29-05:00"
},
{
"eventAction": "registration",
"eventDate": "1985-07-23T00:00:00-04:00"
}
],
"handle": "UNIVER-118",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UNIVER-118",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/35.0.0.0/16"
},
{
"href": "https://whois.arin.net/rest/org/UNIVER-118",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/35.0.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"For DMCA info see http://www.umich.edu/~itua/copyright/"
],
"title": "Registration Comments"
}
],
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"University of Michigan"
],
[
"adr",
{
"label": "IT Communications Services\n4251 Plymouth Road, Suite 2-2200\nAnn Arbor\nMI\n48105-3640\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2018-01-08T15:54:24-05:00"
},
{
"eventAction": "registration",
"eventDate": "2010-04-22T15:36:41-04:00"
}
],
"handle": "NET-35-0-0-0-2",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/35.0.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/35.0.0.0/16"
},
{
"href": "https://whois.arin.net/rest/net/NET-35-0-0-0-2",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/35.0.0.0/16"
},
{
"href": "https://rdap.arin.net/registry/ip/35.0.0.0/12",
"rel": "up",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/35.0.0.0/16"
}
],
"name": "MICH-7326",
"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/35.0.0.0/16"
}
],
"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/35.0.0.0/16"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-35-0-0-0-1",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"remarks": [
{
"description": [
"For DMCA info see http://www.umich.edu/~itua/copyright/"
],
"title": "Registration Comments"
}
],
"startAddress": "35.0.0.0",
"status": [
"active"
],
"type": "ALLOCATION"
}