Registry · RDAP Original response
https://rdap.arin.net/registry/ip/199.43.0.0/24
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "199.43.0.0",
"length": 24
}
],
"endAddress": "199.43.0.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-01T09:19:30-04:00"
},
{
"eventAction": "registration",
"eventDate": "2012-09-07T18:38:22-04:00"
}
],
"handle": "KOSTE6-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/KOSTE6-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
},
{
"href": "https://whois.arin.net/rest/poc/KOSTE6-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "PO Box 232290\nCentreville\nVA\n20120\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Mark Kosters"
],
[
"n",
[],
"text",
[
"Kosters",
"Mark",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"markk@arin.net"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-703-227-0660"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-01T09:18:09-04:00"
},
{
"eventAction": "registration",
"eventDate": "2012-09-07T18:40:58-04:00"
}
],
"handle": "AOA4-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/AOA4-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
},
{
"href": "https://whois.arin.net/rest/poc/AOA4-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "P.O. Box 232290\nCentreville\nVA\n20120\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"ARIN Operations Abuse"
],
[
"org",
[],
"text",
"ARIN Operations"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"abuse@arin.net"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-703-227-0660"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-01T09:21:21-04:00"
},
{
"eventAction": "registration",
"eventDate": "2013-01-15T15:04:27-05:00"
}
],
"handle": "TOSCA5-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/TOSCA5-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
},
{
"href": "https://whois.arin.net/rest/poc/TOSCA5-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "PO Box 232290\nCentreville\nVA\n20120\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Pete Toscano"
],
[
"n",
[],
"text",
[
"Toscano",
"Pete",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"pete@arin.net"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-703-942-9542"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-01T09:19:12-04:00"
},
{
"eventAction": "registration",
"eventDate": "2020-04-16T16:41:31-04:00"
}
],
"handle": "JEFFE114-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/JEFFE114-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
},
{
"href": "https://whois.arin.net/rest/poc/JEFFE114-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"dns",
"noc",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "PO Box 232290\nCentreville\nVA\n20120\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"David Jeffers"
],
[
"n",
[],
"text",
[
"Jeffers",
"David",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"david@arin.net"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-703-227-0660"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-01T09:19:23-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-10-07T14:14:28-04:00"
}
],
"handle": "KASSI16-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/KASSI16-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
},
{
"href": "https://whois.arin.net/rest/poc/KASSI16-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "PO Box 232290\nCentreville\nVA\n20120\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Bashir Kassim"
],
[
"n",
[],
"text",
[
"Kassim",
"Bashir",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"bkassim@arin.net"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-703-227-0660"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-01T09:19:44-04:00"
},
{
"eventAction": "registration",
"eventDate": "2012-09-19T14:33:35-04:00"
}
],
"handle": "MJO282-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MJO282-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
},
{
"href": "https://whois.arin.net/rest/poc/MJO282-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "PO Box 232290\nCentreville\nVA\n20120\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Michael J O'Neill"
],
[
"n",
[],
"text",
[
"O'Neill",
"Michael",
"J",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"mjo@arin.net"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-703-227-0660"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-01T09:23:04-04:00"
},
{
"eventAction": "registration",
"eventDate": "2012-09-07T18:41:45-04:00"
}
],
"handle": "ARINOPS",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ARINOPS",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
},
{
"href": "https://whois.arin.net/rest/org/ARINOPS",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"ARIN Operations"
],
[
"adr",
{
"label": "PO Box 232290\nCentreville\nVA\n20120\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-12-14T20:28:45-05:00"
},
{
"eventAction": "registration",
"eventDate": "2005-11-09T09:20:43-05:00"
}
],
"handle": "NET-199-43-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/199.43.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
},
{
"href": "https://whois.arin.net/rest/net/NET-199-43-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.43.0.0/24"
}
],
"name": "ARIN-ASH",
"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/199.43.0.0/24"
}
],
"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/199.43.0.0/24"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-199-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "199.43.0.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}