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AS747

Headquarters, USAISC

ARIN US active Announced
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Organization
Headquarters, USAISC
DNIC-AS-00747
Registered
Sep 25, 1990
36 years ago
IPv4 Prefixes
45
133,888 addresses
IPv6 Prefixes
1
1 × /48
BGP Neighbours
2
1 upstream/peer · 1 downstream

Registration

AS Number AS747 AS Name DNIC-AS-00747 Organization Headquarters, USAISC Organization ID HEADQU-3 Address NETC-ANC CONUS TNOSC, Fort Huachuca, AZ, 85613, United States Country United States (US) Registry ARIN Allocated Sep 25, 1990 Record Created Sep 25, 1990 Last Updated Aug 02, 2011 Status
active
WHOIS Server whois.arin.net AS Description DNIC-AS-00747 - Headquarters, USAISC, US Abuse Email [email protected] Abuse Phone +1-844-347-2457;ext2

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
PrefixRangeAddresses
6.148.95.0/246.148.95.0 – 6.148.95.255256
143.0.0.0/8 · 9 prefixes · 23,552 addresses
PrefixRangeAddresses
143.68.64.0/19143.68.64.0 – 143.68.95.2558,192
143.68.96.0/21143.68.96.0 – 143.68.103.2552,048
143.73.173.0/24143.73.173.0 – 143.73.173.255256
143.73.240.0/20143.73.240.0 – 143.73.255.2554,096
143.74.251.0/24143.74.251.0 – 143.74.251.255256
143.76.112.0/20143.76.112.0 – 143.76.127.2554,096
143.76.227.0/24143.76.227.0 – 143.76.227.255256
143.76.239.0/24143.76.239.0 – 143.76.239.255256
143.86.128.0/20143.86.128.0 – 143.86.143.2554,096
144.0.0.0/8 · 6 prefixes · 16,384 addresses
PrefixRangeAddresses
144.104.16.0/21144.104.16.0 – 144.104.23.2552,048
144.104.248.0/21144.104.248.0 – 144.104.255.2552,048
144.107.128.0/21144.107.128.0 – 144.107.135.2552,048
144.107.136.0/21144.107.136.0 – 144.107.143.2552,048
144.107.144.0/20144.107.144.0 – 144.107.159.2554,096
144.107.224.0/20144.107.224.0 – 144.107.239.2554,096
147.0.0.0/8 · 16 prefixes · 65,536 addresses
PrefixRangeAddresses
147.242.0.0/16147.242.0.0 – 147.242.255.25565,536
147.242.1.0/24147.242.1.0 – 147.242.1.255256
147.242.3.0/24147.242.3.0 – 147.242.3.255256
147.242.5.0/24147.242.5.0 – 147.242.5.255256
147.242.8.0/24147.242.8.0 – 147.242.8.255256
147.242.21.0/24147.242.21.0 – 147.242.21.255256
147.242.50.0/24147.242.50.0 – 147.242.50.255256
147.242.52.0/24147.242.52.0 – 147.242.52.255256
147.242.105.0/24147.242.105.0 – 147.242.105.255256
147.242.127.0/24147.242.127.0 – 147.242.127.255256
147.242.128.0/24147.242.128.0 – 147.242.128.255256
147.242.200.0/24147.242.200.0 – 147.242.200.255256
147.242.236.0/24147.242.236.0 – 147.242.236.255256
147.242.245.0/24147.242.245.0 – 147.242.245.255256
147.242.249.0/24147.242.249.0 – 147.242.249.255256
147.242.250.0/24147.242.250.0 – 147.242.250.255256
150.0.0.0/8 · 3 prefixes · 12,288 addresses
PrefixRangeAddresses
150.196.48.0/20150.196.48.0 – 150.196.63.2554,096
150.196.64.0/20150.196.64.0 – 150.196.79.2554,096
150.196.80.0/20150.196.80.0 – 150.196.95.2554,096
155.0.0.0/8 · 5 prefixes · 2,048 addresses
PrefixRangeAddresses
155.20.148.0/22155.20.148.0 – 155.20.151.2551,024
155.20.163.0/24155.20.163.0 – 155.20.163.255256
155.20.231.0/24155.20.231.0 – 155.20.231.255256
155.20.252.0/24155.20.252.0 – 155.20.252.255256
155.26.64.0/24155.26.64.0 – 155.26.64.255256
160.0.0.0/8 · 2 prefixes · 9,216 addresses
PrefixRangeAddresses
160.140.252.0/22160.140.252.0 – 160.140.255.2551,024
160.143.224.0/19160.143.224.0 – 160.143.255.2558,192
215.0.0.0/8 · 3 prefixes · 4,608 addresses
PrefixRangeAddresses
215.1.62.0/24215.1.62.0 – 215.1.62.255256
215.1.63.0/24215.1.63.0 – 215.1.63.255256
215.1.96.0/20215.1.96.0 – 215.1.111.2554,096

IPv6 Prefixes

1 prefix · 1 × /48 Routing data as of 2026-10-04 00:00 UTC

PrefixAddresses
2608:c109:c0::/48280

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.

Upstream & peer side (1)

Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers.

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS27066DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD)64019,426330

Downstream side (1)

Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams).

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS5277DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD)2824,6060

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.