Registry · RDAP Original response
https://rdap.arin.net/registry/ip/204.145.112.0
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "204.145.112.0",
"length": 22
}
],
"endAddress": "204.145.115.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-07-09T13:37:08-04:00"
},
{
"eventAction": "registration",
"eventDate": "2015-03-23T10:18:03-04:00"
}
],
"handle": "NETWO7384-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NETWO7384-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/204.145.112.0"
},
{
"href": "https://whois.arin.net/rest/poc/NETWO7384-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/204.145.112.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "7711 Carondelet Ave\nSt. Louis\nMO\n63105\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Network Engineers"
],
[
"org",
[],
"text",
"Centene Corporation"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"IT-Core-Network@Centene.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-314-445-0280"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2014-09-02T11:35:38-04:00"
},
{
"eventAction": "registration",
"eventDate": "2014-09-01T11:32:11-04:00"
}
],
"handle": "ABUSE4840-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABUSE4840-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/204.145.112.0"
},
{
"href": "https://whois.arin.net/rest/poc/ABUSE4840-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/204.145.112.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Contact information for \"Abuse\" at Centene Corporation"
],
"title": "Registration Comments"
},
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2015-09-02"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse",
"noc"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "7711 Carondelet Ave\nSt Louis\nMO\n63105\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Abuse"
],
[
"org",
[],
"text",
"Centene Corporation"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"domains@centene.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-314-505-6920"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2015-03-23T14:56:47-04:00"
},
{
"eventAction": "registration",
"eventDate": "2003-02-06T14:51:25-05:00"
}
],
"handle": "CENTE-5",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CENTE-5",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/204.145.112.0"
},
{
"href": "https://whois.arin.net/rest/org/CENTE-5",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/204.145.112.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Centene Corporation"
],
[
"adr",
{
"label": "7711 Carondelet Avenue, Ste. 800\nSt. Louis\nMO\n63105\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-07-09T13:37:08-04:00"
},
{
"eventAction": "registration",
"eventDate": "2015-03-23T10:18:03-04:00"
}
],
"handle": "NETWO7384-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NETWO7384-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/204.145.112.0"
},
{
"href": "https://whois.arin.net/rest/poc/NETWO7384-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/204.145.112.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "7711 Carondelet Ave\nSt. Louis\nMO\n63105\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Network Engineers"
],
[
"org",
[],
"text",
"Centene Corporation"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"IT-Core-Network@Centene.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-314-445-0280"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-12-14T20:28:29-05:00"
},
{
"eventAction": "registration",
"eventDate": "2009-01-26T12:28:42-05:00"
}
],
"handle": "NET-204-145-112-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/204.145.112.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/204.145.112.0"
},
{
"href": "https://whois.arin.net/rest/net/NET-204-145-112-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/204.145.112.0"
}
],
"name": "CENTENE-CORPORATION",
"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/204.145.112.0"
}
],
"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/204.145.112.0"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-204-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "204.145.112.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}