Registry · RDAP Original response
https://rdap.arin.net/registry/ip/192.243.176.0/24
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "192.243.128.0",
"length": 18
},
{
"v4prefix": "192.243.192.0",
"length": 20
},
{
"v4prefix": "192.243.208.0",
"length": 22
},
{
"v4prefix": "192.243.212.0",
"length": 24
}
],
"endAddress": "192.243.212.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-05-30T17:58:21-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-05-30T17:58:21-04:00"
}
],
"handle": "MATTH436-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MATTH436-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/192.243.176.0/24"
},
{
"href": "https://whois.arin.net/rest/poc/MATTH436-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/192.243.176.0/24"
}
],
"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 2025-05-30"
],
"title": "Unvalidated POC"
}
],
"roles": [
"noc",
"technical",
"abuse",
"dns",
"routing"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "PO Box 25065\nOne Denver Federal Center #41\nLakewood\nCO\n80225\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Anthony Matthews"
],
[
"n",
[],
"text",
[
"Matthews",
"Anthony",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"amatthews@osmre.gov"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-303-293-5000"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-12-05T13:54:22-05:00"
},
{
"eventAction": "registration",
"eventDate": "2024-05-31T14:55:22-04:00"
}
],
"handle": "MAJAN2-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MAJAN2-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/192.243.176.0/24"
},
{
"href": "https://whois.arin.net/rest/poc/MAJAN2-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/192.243.176.0/24"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"routing",
"noc",
"technical",
"dns",
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "3 Parkway Center\nPittsburgh\nPA\n15220\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Richard Majancsik"
],
[
"n",
[],
"text",
[
"Majancsik",
"Richard",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"rmajancsik@osmre.gov"
],
[
"email",
[],
"text",
"richard_majancsik@ios.doi.gov"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-202-208-6346"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-05-30T11:29:21-04:00"
},
{
"eventAction": "registration",
"eventDate": "2021-01-28T09:51:36-05:00"
}
],
"handle": "NANCY16-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NANCY16-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/192.243.176.0/24"
},
{
"href": "https://whois.arin.net/rest/poc/NANCY16-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/192.243.176.0/24"
}
],
"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 2025-05-30"
],
"title": "Unvalidated POC"
}
],
"roles": [
"routing",
"dns",
"abuse",
"noc",
"technical",
"administrative"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1027 Virginia Street East\nCharleston\nWV\n25301\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Nancy A Osborne"
],
[
"n",
[],
"text",
[
"Osborne",
"Nancy",
"A",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"nosborne@osmre.gov"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-202-219-3143"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-304-347-7158"
],
[
"tel",
{
"type": [
"work",
"cell"
]
},
"text",
"+1-304-542-6857"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-09-23T12:09:08-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-08-28T15:05:42-04:00"
}
],
"handle": "OSM-10-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/OSM-10-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/192.243.176.0/24"
},
{
"href": "https://whois.arin.net/rest/org/OSM-10-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/192.243.176.0/24"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Office of Surface Mining Reclamation and Enforcement"
],
[
"adr",
{
"label": "1951 Constitution Ave, NW\nWashington\nDC\n20240\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-10-10T14:04:13-04:00"
},
{
"eventAction": "registration",
"eventDate": "1992-11-10T00:00:00-05:00"
}
],
"handle": "NET-192-243-128-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/192.243.128.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/192.243.176.0/24"
},
{
"href": "https://whois.arin.net/rest/net/NET-192-243-128-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/192.243.176.0/24"
}
],
"name": "NETBLK-OSM",
"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/192.243.176.0/24"
}
],
"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/192.243.176.0/24"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-192-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "192.243.128.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}