Registration
IPv4 Prefixes
38 prefixes · 285,440 addresses Routing data as of 2026-10-08 08:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 128.202.0.0/16 | 128.202.0.0 – 128.202.255.255 | 65,536 |
| 128.236.0.0/16 | 128.236.0.0 – 128.236.255.255 | 65,536 |
| 131.15.38.0/23 | 131.15.38.0 – 131.15.39.255 | 512 |
| 131.15.40.0/21 | 131.15.40.0 – 131.15.47.255 | 2,048 |
| 131.15.48.0/20 | 131.15.48.0 – 131.15.63.255 | 4,096 |
| 131.15.64.0/20 | 131.15.64.0 – 131.15.79.255 | 4,096 |
| 131.15.80.0/24 | 131.15.80.0 – 131.15.80.255 | 256 |
| 131.15.88.0/24 | 131.15.88.0 – 131.15.88.255 | 256 |
| 131.15.90.0/23 | 131.15.90.0 – 131.15.91.255 | 512 |
| 131.15.92.0/24 | 131.15.92.0 – 131.15.92.255 | 256 |
| 131.15.98.0/23 | 131.15.98.0 – 131.15.99.255 | 512 |
| 131.15.119.0/24 | 131.15.119.0 – 131.15.119.255 | 256 |
| 131.15.120.0/24 | 131.15.120.0 – 131.15.120.255 | 256 |
| 131.15.136.0/24 | 131.15.136.0 – 131.15.136.255 | 256 |
| 131.15.144.0/21 | 131.15.144.0 – 131.15.151.255 | 2,048 |
| 131.15.160.0/21 | 131.15.160.0 – 131.15.167.255 | 2,048 |
| 131.15.208.0/24 | 131.15.208.0 – 131.15.208.255 | 256 |
| 131.15.233.0/24 | 131.15.233.0 – 131.15.233.255 | 256 |
| 131.15.234.0/24 | 131.15.234.0 – 131.15.234.255 | 256 |
| 131.15.235.0/24 | 131.15.235.0 – 131.15.235.255 | 256 |
| 131.15.236.0/24 | 131.15.236.0 – 131.15.236.255 | 256 |
| 131.15.237.0/24 | 131.15.237.0 – 131.15.237.255 | 256 |
| 131.15.238.0/24 | 131.15.238.0 – 131.15.238.255 | 256 |
| 131.15.239.0/24 | 131.15.239.0 – 131.15.239.255 | 256 |
| 131.15.252.0/24 | 131.15.252.0 – 131.15.252.255 | 256 |
| 131.15.253.0/24 | 131.15.253.0 – 131.15.253.255 | 256 |
| 137.0.0.0/16 | 137.0.0.0 – 137.0.255.255 | 65,536 |
| 137.11.0.0/16 | 137.11.0.0 – 137.11.255.255 | 65,536 |
| 143.141.96.0/22 | 143.141.96.0 – 143.141.99.255 | 1,024 |
| 199.31.2.0/24 | 199.31.2.0 – 199.31.2.255 | 256 |
| 199.31.3.0/24 | 199.31.3.0 – 199.31.3.255 | 256 |
| 199.251.155.0/24 | 199.251.155.0 – 199.251.155.255 | 256 |
| 199.251.156.0/24 | 199.251.156.0 – 199.251.156.255 | 256 |
| 204.34.211.0/24 | 204.34.211.0 – 204.34.211.255 | 256 |
| 206.39.56.0/24 | 206.39.56.0 – 206.39.56.255 | 256 |
| 206.39.58.0/24 | 206.39.58.0 – 206.39.58.255 | 256 |
| 207.133.179.0/24 | 207.133.179.0 – 207.133.179.255 | 256 |
| 207.133.189.0/24 | 207.133.189.0 – 207.133.189.255 | 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 AS27064 DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) 272 12,549 0
Raw RDAP Response
{
"endAutnum": 508,
"entities": [
{
"entities": [
{
"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/391"
},
{
"href": "https://whois.arin.net/rest/poc/REGIS10-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/391"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"abuse",
"administrative"
],
"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": "2026-08-12T11:30:15-04:00"
},
{
"eventAction": "registration",
"eventDate": "2008-06-05T10:28:10-04:00"
}
],
"handle": "7ESG",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/7ESG",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/391"
},
{
"href": "https://whois.arin.net/rest/org/7ESG",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/391"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Air Force Systems Networking"
],
[
"adr",
{
"label": "501 EAST MOORE DR. BLDG 884 RM 1100 GUNTHER ANNEX\nMAXWELL AFB\nAL\n36114\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2008-06-06T09:57:55-04:00"
},
{
"eventAction": "registration",
"eventDate": "1989-08-04T00:00:00-04:00"
}
],
"handle": "AS379",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/379",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/391"
},
{
"href": "https://whois.arin.net/rest/asn/AS379",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/391"
}
],
"name": "AFCONC-BLOCK1-AS",
"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/391"
}
],
"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/391"
}
],
"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": 379,
"status": [
"active"
]
} Contact details of private individuals are redacted.