Registry · RDAP Original response
https://rdap.arin.net/registry/ip/129.19.0.0/16
{
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"cidr0_cidrs": [
{
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}
],
"endAddress": "129.19.255.255",
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{
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"eventDate": "2026-08-26T11:08:09-04:00"
},
{
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}
],
"handle": "HERNA1265-ARIN",
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{
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},
{
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[
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"text",
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[
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[
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[
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"text",
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[
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"text",
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},
{
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},
{
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}
],
"handle": "ADLER49-ARIN",
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{
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"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/129.19.0.0/16"
},
{
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}
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[
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"text",
[
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],
[
"fn",
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"text",
"Matt Adler"
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[
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[
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[
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[],
"text",
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[
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{
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"text",
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},
{
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{
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},
{
"eventAction": "registration",
"eventDate": "2013-04-05T11:38:05-04:00"
}
],
"handle": "MPW-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MPW-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/129.19.0.0/16"
},
{
"href": "https://whois.arin.net/rest/poc/MPW-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/129.19.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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"technical"
],
"status": [
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],
"vcardArray": [
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[
[
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"text",
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],
[
"adr",
{
"label": "1018 Campus Delivery\r\nColorado Sate University\nFort Collins\nCO\n80523\nUnited States"
},
"text",
[
"",
"",
"",
"",
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"",
""
]
],
[
"fn",
[],
"text",
"Michael Patrick Willard"
],
[
"n",
[],
"text",
[
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"Patrick",
"",
""
]
],
[
"kind",
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"text",
"individual"
],
[
"email",
[],
"text",
"mike.willard@colostate.edu"
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[
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{
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},
"text",
"+1-970-491-4651"
]
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},
{
"events": [
{
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"eventDate": "2026-02-06T19:57:39-05:00"
},
{
"eventAction": "registration",
"eventDate": "2024-02-07T15:08:20-05:00"
}
],
"handle": "SSJ11-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SSJ11-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/129.19.0.0/16"
},
{
"href": "https://whois.arin.net/rest/poc/SSJ11-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/129.19.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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"vcardArray": [
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[
[
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[
"adr",
{
"label": "601 S Howes St\nFort Collins\nCO\n80521\nUnited States"
},
"text",
[
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],
[
"fn",
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"text",
"Steve Steve Juarez"
],
[
"n",
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[
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""
]
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[
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"individual"
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[
"email",
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"text",
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[
"tel",
{
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]
},
"text",
"+1-970-491-4150"
],
[
"tel",
{
"type": [
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"cell"
]
},
"text",
"+1-970-443-3520"
]
]
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},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-12T10:28:56-04:00"
},
{
"eventAction": "registration",
"eventDate": "2007-03-07T18:18:39-05:00"
}
],
"handle": "DNSAD191-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DNSAD191-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/129.19.0.0/16"
},
{
"href": "https://whois.arin.net/rest/poc/DNSAD191-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/129.19.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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],
"status": [
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],
"vcardArray": [
"vcard",
[
[
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[],
"text",
"4.0"
],
[
"adr",
{
"label": "Academic Computing and Networking Services\nColorado State University\nFort Collins\nCO\n80523\nUnited States"
},
"text",
[
"",
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"",
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""
]
],
[
"fn",
[],
"text",
"DNS Administrator"
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[
"org",
[],
"text",
"Colorado State University"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
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],
[
"tel",
{
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]
},
"text",
"+1-970-491-5600"
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[
"tel",
{
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]
},
"text",
"+1-970-491-1958"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-09-29T17:26:38-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-01-16T16:05:39-05:00"
}
],
"handle": "CSU-2-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CSU-2-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/129.19.0.0/16"
},
{
"href": "https://whois.arin.net/rest/org/CSU-2-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/129.19.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Colorado State University"
],
[
"adr",
{
"label": "Academic Computing and Networking Services\nColorado State University\n1018 Campus Delivery\nFort Collins\nCO\n80523\nUnited States"
},
"text",
[
"",
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""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-07-29T13:25:18-04:00"
},
{
"eventAction": "registration",
"eventDate": "1987-07-08T00:00:00-04:00"
}
],
"handle": "NET-129-19-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/129.19.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/129.19.0.0/16"
},
{
"href": "https://whois.arin.net/rest/net/NET-129-19-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/129.19.0.0/16"
}
],
"name": "WESTNET",
"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/129.19.0.0/16"
}
],
"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/129.19.0.0/16"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-129-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
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"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "129.19.0.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}