Registry · RDAP Original response
https://rdap.arin.net/registry/ip/170.125.0.0/16
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "170.125.0.0",
"length": 16
}
],
"endAddress": "170.125.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-05-19T15:46:31-04:00"
},
{
"eventAction": "registration",
"eventDate": "2004-08-20T15:56:50-04:00"
}
],
"handle": "MDK-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MDK-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/170.125.0.0/16"
},
{
"href": "https://whois.arin.net/rest/poc/MDK-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/170.125.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "210 Martin Luther King JR. Blvd\nRoom 524\nMadison\nWI\n53703\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Marvin D Klang"
],
[
"n",
[],
"text",
[
"Klang",
"Marvin",
"D",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"olson@countyofdane.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-608-283-2970"
],
[
"tel",
{
"type": [
"work",
"cell"
]
},
"text",
"+1-608-209-6189"
],
[
"tel",
{
"type": [
"work",
"fax"
]
},
"text",
"+1-608-266-1242"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-05-19T15:46:20-04:00"
},
{
"eventAction": "registration",
"eventDate": "2019-12-05T16:12:14-05:00"
}
],
"handle": "SJO194-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SJO194-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/170.125.0.0/16"
},
{
"href": "https://whois.arin.net/rest/poc/SJO194-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/170.125.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "Room 524\n210 Martin L King Jr BLVD,\nMadison\nWI\n53703\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Samuel John Olson"
],
[
"n",
[],
"text",
[
"Olson",
"Samuel",
"John",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"olson@danecounty.gov"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-608-283-2970"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-05-19T12:01:32-04:00"
},
{
"eventAction": "registration",
"eventDate": "1994-04-21T00:00:00-04:00"
}
],
"handle": "DCIM",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DCIM",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/170.125.0.0/16"
},
{
"href": "https://whois.arin.net/rest/org/DCIM",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/170.125.0.0/16"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Dane County"
],
[
"adr",
{
"label": "210 Martin Luther King Jr., Blvd.\r\nRoom 524\nMadison\nWI\n53703\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-12-14T20:28:40-05:00"
},
{
"eventAction": "registration",
"eventDate": "1994-04-21T00:00:00-04:00"
}
],
"handle": "NET-170-125-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/170.125.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/170.125.0.0/16"
},
{
"href": "https://whois.arin.net/rest/net/NET-170-125-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/170.125.0.0/16"
}
],
"name": "WIDCNET",
"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/170.125.0.0/16"
}
],
"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/170.125.0.0/16"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-170-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "170.125.0.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}