Registration
IPv4 Prefixes
45 prefixes · 133,888 addresses · 30 top-level Routing data as of 2026-10-04 00:00 UTC
6.0.0.0/8 · 1 prefix · 256 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 6.148.95.0/24 | 6.148.95.0 – 6.148.95.255 | 256 |
143.0.0.0/8 · 9 prefixes · 23,552 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 143.68.64.0/19 | 143.68.64.0 – 143.68.95.255 | 8,192 |
| 143.68.96.0/21 | 143.68.96.0 – 143.68.103.255 | 2,048 |
| 143.73.173.0/24 | 143.73.173.0 – 143.73.173.255 | 256 |
| 143.73.240.0/20 | 143.73.240.0 – 143.73.255.255 | 4,096 |
| 143.74.251.0/24 | 143.74.251.0 – 143.74.251.255 | 256 |
| 143.76.112.0/20 | 143.76.112.0 – 143.76.127.255 | 4,096 |
| 143.76.227.0/24 | 143.76.227.0 – 143.76.227.255 | 256 |
| 143.76.239.0/24 | 143.76.239.0 – 143.76.239.255 | 256 |
| 143.86.128.0/20 | 143.86.128.0 – 143.86.143.255 | 4,096 |
144.0.0.0/8 · 6 prefixes · 16,384 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 144.104.16.0/21 | 144.104.16.0 – 144.104.23.255 | 2,048 |
| 144.104.248.0/21 | 144.104.248.0 – 144.104.255.255 | 2,048 |
| 144.107.128.0/21 | 144.107.128.0 – 144.107.135.255 | 2,048 |
| 144.107.136.0/21 | 144.107.136.0 – 144.107.143.255 | 2,048 |
| 144.107.144.0/20 | 144.107.144.0 – 144.107.159.255 | 4,096 |
| 144.107.224.0/20 | 144.107.224.0 – 144.107.239.255 | 4,096 |
147.0.0.0/8 · 16 prefixes · 65,536 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 147.242.0.0/16 | 147.242.0.0 – 147.242.255.255 | 65,536 |
| 147.242.1.0/24 | 147.242.1.0 – 147.242.1.255 | 256 |
| 147.242.3.0/24 | 147.242.3.0 – 147.242.3.255 | 256 |
| 147.242.5.0/24 | 147.242.5.0 – 147.242.5.255 | 256 |
| 147.242.8.0/24 | 147.242.8.0 – 147.242.8.255 | 256 |
| 147.242.21.0/24 | 147.242.21.0 – 147.242.21.255 | 256 |
| 147.242.50.0/24 | 147.242.50.0 – 147.242.50.255 | 256 |
| 147.242.52.0/24 | 147.242.52.0 – 147.242.52.255 | 256 |
| 147.242.105.0/24 | 147.242.105.0 – 147.242.105.255 | 256 |
| 147.242.127.0/24 | 147.242.127.0 – 147.242.127.255 | 256 |
| 147.242.128.0/24 | 147.242.128.0 – 147.242.128.255 | 256 |
| 147.242.200.0/24 | 147.242.200.0 – 147.242.200.255 | 256 |
| 147.242.236.0/24 | 147.242.236.0 – 147.242.236.255 | 256 |
| 147.242.245.0/24 | 147.242.245.0 – 147.242.245.255 | 256 |
| 147.242.249.0/24 | 147.242.249.0 – 147.242.249.255 | 256 |
| 147.242.250.0/24 | 147.242.250.0 – 147.242.250.255 | 256 |
150.0.0.0/8 · 3 prefixes · 12,288 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 150.196.48.0/20 | 150.196.48.0 – 150.196.63.255 | 4,096 |
| 150.196.64.0/20 | 150.196.64.0 – 150.196.79.255 | 4,096 |
| 150.196.80.0/20 | 150.196.80.0 – 150.196.95.255 | 4,096 |
155.0.0.0/8 · 5 prefixes · 2,048 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 155.20.148.0/22 | 155.20.148.0 – 155.20.151.255 | 1,024 |
| 155.20.163.0/24 | 155.20.163.0 – 155.20.163.255 | 256 |
| 155.20.231.0/24 | 155.20.231.0 – 155.20.231.255 | 256 |
| 155.20.252.0/24 | 155.20.252.0 – 155.20.252.255 | 256 |
| 155.26.64.0/24 | 155.26.64.0 – 155.26.64.255 | 256 |
160.0.0.0/8 · 2 prefixes · 9,216 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 160.140.252.0/22 | 160.140.252.0 – 160.140.255.255 | 1,024 |
| 160.143.224.0/19 | 160.143.224.0 – 160.143.255.255 | 8,192 |
215.0.0.0/8 · 3 prefixes · 4,608 addresses
| Prefix | Range | Addresses |
|---|---|---|
| 215.1.62.0/24 | 215.1.62.0 – 215.1.62.255 | 256 |
| 215.1.63.0/24 | 215.1.63.0 – 215.1.63.255 | 256 |
| 215.1.96.0/20 | 215.1.96.0 – 215.1.111.255 | 4,096 |
IPv6 Prefixes
1 prefix · 1 × /48 Routing data as of 2026-10-04 00:00 UTC
| Prefix | Addresses |
|---|---|
| 2608:c109:c0:: | 280 |
BGP Neighbours
2 unique neighbours · 1 upstream/peer · 1 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. Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams). Upstream & peer side (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS27066 DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) 640 19,426 330 Downstream side (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS5277 DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) 282 4,606 0
Raw RDAP Response
{
"endAutnum": 747,
"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/747"
},
{
"href": "https://whois.arin.net/rest/poc/REGIS10-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/747"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"technical",
"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": "2026-08-12T11:32:02-04:00"
},
{
"eventAction": "registration",
"eventDate": "1990-03-26T00:00:00-05:00"
}
],
"handle": "HEADQU-3",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/HEADQU-3",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/747"
},
{
"href": "https://whois.arin.net/rest/org/HEADQU-3",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/747"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Headquarters, USAISC"
],
[
"adr",
{
"label": "NETC-ANC CONUS TNOSC\nFort Huachuca\nAZ\n85613\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2011-08-02T10:56:12-04:00"
},
{
"eventAction": "registration",
"eventDate": "1990-09-25T00:00:00-04:00"
}
],
"handle": "AS747",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/747",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/747"
},
{
"href": "https://whois.arin.net/rest/asn/AS747",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/747"
}
],
"name": "DNIC-AS-00747",
"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/747"
}
],
"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/747"
}
],
"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": 747,
"status": [
"active"
]
} Contact details of private individuals are redacted.