AS1585
United States Department of Defense (DoD)
ARIN US active Announced
More ASNs in the United States → Organization
United States Department of Defense (DoD)
DNIC-ASBLK-01550-01601
Registered
Apr 03, 2006
20 years ago
IPv4 Prefixes
4
2,816 addresses
IPv6 Prefixes
0
BGP Neighbours
1
1 upstream/peer · 0 downstream
Registration
AS Number AS1585 Registered Block AS1550 – AS1601 AS Name DNIC-ASBLK-01550-01601 Handle AS1550 Organization United States Department of Defense (DoD) Organization ID USDDD Address 3990 E. Broad Street, Columbus, OH, 43218, United States Country United States (US) Registry ARIN Allocated Apr 03, 2006 Record Created Apr 03, 2006 Last Updated Sep 12, 2025 Status
active
WHOIS Server whois.arin.net AS Description DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD), US Abuse Email [email protected] Abuse Phone +1-844-347-2457;ext2 IPv4 Prefixes
4 prefixes · 2,816 addresses Routing data as of 2026-10-07 00:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 6.124.0.0/21 | 6.124.0.0 – 6.124.7.255 | 2,048 |
| 155.155.32.0/24 | 155.155.32.0 – 155.155.32.255 | 256 |
| 155.155.33.0/24 | 155.155.33.0 – 155.155.33.255 | 256 |
| 192.188.203.0/24 | 192.188.203.0 – 192.188.203.255 | 256 |
IPv6 Prefixes
This AS does not currently announce any IPv6 prefixes.
BGP Neighbours
1 unique neighbour · 1 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 (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS1554 DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) 267 1,319 0
Raw RDAP Response
{
"endAutnum": 1601,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-02-12T10:14:24-05:00"
},
{
"eventAction": "registration",
"eventDate": "1993-05-26T19:47:50-04:00"
}
],
"handle": "MIL-HSTMST-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1585"
},
{
"href": "https://whois.arin.net/rest/poc/MIL-HSTMST-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1585"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc",
"abuse",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "DISA-Columbus\n300 North James Road\nWhitehall\nOH\n43213\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Network DoD"
],
[
"org",
{},
"text",
"DoD Network Information Center (DoD NIC)"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-844-347-2457;ext2"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-02-12T13:52:28-05:00"
},
{
"eventAction": "registration",
"eventDate": "2009-06-24T09:41:15-04:00"
}
],
"handle": "REGIS10-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/REGIS10-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1585"
},
{
"href": "https://whois.arin.net/rest/poc/REGIS10-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1585"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "DISA-Columbus\n300 North James Road\nWhitehall\nOH\n43213\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Registration"
],
[
"org",
{},
"text",
"DoD Network Information Center"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-844-347-2457;ext2"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-12T11:35:39-04:00"
},
{
"eventAction": "registration",
"eventDate": "2007-01-12T12:10:52-05:00"
}
],
"handle": "USDDD",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/USDDD",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1585"
},
{
"href": "https://whois.arin.net/rest/org/USDDD",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1585"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"United States Department of Defense (DoD)"
],
[
"adr",
{
"label": "3990 E. Broad Street\nColumbus\nOH\n43218\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-09-12T11:01:18-04:00"
},
{
"eventAction": "registration",
"eventDate": "2006-04-03T13:35:47-04:00"
}
],
"handle": "AS1550",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/1550",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/1585"
},
{
"href": "https://whois.arin.net/rest/asn/AS1550",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/1585"
}
],
"name": "DNIC-ASBLK-01550-01601",
"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/1585"
}
],
"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/1585"
}
],
"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": 1550,
"status": [
"active"
]
} Contact details of private individuals are redacted.