AS13506
United States Department of the Treasury
ARIN US active Announced
More ASNs in the United States → Organization
United States Department of the Treasury
US-DEPARTMENT-OF-THE-TREASURY
Registered
Jun 23, 1999
27 years ago
IPv4 Prefixes
6
131,072 addresses
IPv6 Prefixes
2
512 × /48
BGP Neighbours
2
2 upstream/peer · 0 downstream
Registration
AS Number AS13506 AS Name US-DEPARTMENT-OF-THE-TREASURY Organization United States Department of the Treasury Organization ID UDT-6 Address OCIO, 1750 Pennsylvania Ave., NW, Washington, DC, 20006, United States Country United States (US) Registry ARIN Allocated Jun 23, 1999 Record Created Jun 23, 1999 Last Updated Sep 22, 2014 Status
active
WHOIS Server whois.arin.net AS Description US-DEPARTMENT-OF-THE-TREASURY - United States Department of the Treasury, US Abuse Email [email protected] Abuse Phone +1-202-927-9777 IPv4 Prefixes
6 prefixes · 131,072 addresses · 2 top-level Routing data as of 2026-10-04 00:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 164.95.0.0/16 | 164.95.0.0 – 164.95.255.255 | 65,536 |
| 164.95.95.0/24 | 164.95.95.0 – 164.95.95.255 | 256 |
| 164.95.204.0/24 | 164.95.204.0 – 164.95.204.255 | 256 |
| 166.123.0.0/16 | 166.123.0.0 – 166.123.255.255 | 65,536 |
| 166.123.204.0/24 | 166.123.204.0 – 166.123.204.255 | 256 |
| 166.123.208.0/24 | 166.123.208.0 – 166.123.208.255 | 256 |
IPv6 Prefixes
2 prefixes · 512 × /48 Routing data as of 2026-10-04 00:00 UTC
| Prefix | Addresses |
|---|---|
| 2610:108:3100:: | 288 |
| 2610:108:4100:: | 288 |
BGP Neighbours
2 unique neighbours · 2 upstream/peer · 0 downstream. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Upstream & peer side (2)
Raw RDAP Response
{
"endAutnum": 13506,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-25T14:19:49-04:00"
},
{
"eventAction": "registration",
"eventDate": "2012-09-05T10:38:24-04:00"
}
],
"handle": "DLS46-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DLS46-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/13506"
},
{
"href": "https://whois.arin.net/rest/poc/DLS46-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/13506"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-03-26T14:01:47-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-03-26T14:01:47-04:00"
}
],
"handle": "USTRE-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/USTRE-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/13506"
},
{
"href": "https://whois.arin.net/rest/poc/USTRE-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/13506"
}
],
"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 2026-03-26"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse",
"noc"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1500 Pennsylvania Avenue\nWashington\nDC\n20220\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"US-TREASURY-SOC"
],
[
"org",
{},
"text",
"Department of the Treasury"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-202-927-9777"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-03-27T08:56:17-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-03-27T08:50:35-04:00"
}
],
"handle": "METZI13-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/METZI13-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/13506"
},
{
"href": "https://whois.arin.net/rest/poc/METZI13-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/13506"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-03-12T10:24:43-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-03-07T13:48:26-05:00"
}
],
"handle": "TIC5-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/TIC5-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/13506"
},
{
"href": "https://whois.arin.net/rest/poc/TIC5-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/13506"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "200 3rd Street\nParkersburg\nWV\n26101\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"TIC"
],
[
"org",
{},
"text",
"Bureau of the Fiscal Service"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-304-480-6845"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-03-27T08:52:01-04:00"
},
{
"eventAction": "registration",
"eventDate": "1999-06-23T00:00:00-04:00"
}
],
"handle": "UDT-6",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UDT-6",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/13506"
},
{
"href": "https://whois.arin.net/rest/org/UDT-6",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/13506"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"United States Department of the Treasury"
],
[
"adr",
{
"label": "OCIO\r\n1750 Pennsylvania Ave., NW\nWashington\nDC\n20006\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2016-03-07T09:27:37-05:00"
},
{
"eventAction": "registration",
"eventDate": "2014-09-08T13:37:32-04:00"
}
],
"handle": "KINGJ45-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/KINGJ45-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/13506"
},
{
"href": "https://whois.arin.net/rest/poc/KINGJ45-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/13506"
}
],
"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 2017-03-07"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2014-09-22T18:03:04-04:00"
},
{
"eventAction": "registration",
"eventDate": "1999-06-23T00:00:00-04:00"
}
],
"handle": "AS13506",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/13506",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/13506"
},
{
"href": "https://whois.arin.net/rest/asn/AS13506",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/13506"
}
],
"name": "US-DEPARTMENT-OF-THE-TREASURY",
"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/autnum/13506"
}
],
"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/autnum/13506"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"startAutnum": 13506,
"status": [
"active"
]
} Contact details of private individuals are redacted.