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AS27066

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-27032-27159
Registered
Jan 16, 2003
23 years ago
IPv4 Prefixes
111
36,096 addresses
IPv6 Prefixes
8
8 × /48
BGP Neighbours
32
1 upstream/peer · 31 downstream

Registration

AS Number AS27066 Registered Block AS27032 – AS27159 AS Name DNIC-ASBLK-27032-27159 Handle AS27032 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 Jan 16, 2003 Record Created Jan 16, 2003 Last Updated Sep 12, 2025 Status
active
WHOIS Server whois.arin.net AS Description DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD), US Abuse Email [email protected] Abuse Phone +1-844-347-2457;ext2

IPv4 Prefixes

111 prefixes · 36,096 addresses Routing data as of 2026-10-05 16:00 UTC

134.0.0.0/8 · 5 prefixes · 1,280 addresses
PrefixRangeAddresses
134.229.134.0/24134.229.134.0 – 134.229.134.255256
134.229.136.0/24134.229.136.0 – 134.229.136.255256
134.229.176.0/24134.229.176.0 – 134.229.176.255256
134.229.177.0/24134.229.177.0 – 134.229.177.255256
134.229.178.0/24134.229.178.0 – 134.229.178.255256
139.0.0.0/8 · 17 prefixes · 4,352 addresses
PrefixRangeAddresses
139.241.72.0/24139.241.72.0 – 139.241.72.255256
139.241.73.0/24139.241.73.0 – 139.241.73.255256
139.241.74.0/24139.241.74.0 – 139.241.74.255256
139.241.75.0/24139.241.75.0 – 139.241.75.255256
139.241.76.0/24139.241.76.0 – 139.241.76.255256
139.241.77.0/24139.241.77.0 – 139.241.77.255256
139.241.129.0/24139.241.129.0 – 139.241.129.255256
139.241.131.0/24139.241.131.0 – 139.241.131.255256
139.241.132.0/24139.241.132.0 – 139.241.132.255256
139.241.133.0/24139.241.133.0 – 139.241.133.255256
139.241.137.0/24139.241.137.0 – 139.241.137.255256
139.241.139.0/24139.241.139.0 – 139.241.139.255256
139.241.147.0/24139.241.147.0 – 139.241.147.255256
139.241.148.0/24139.241.148.0 – 139.241.148.255256
139.241.150.0/24139.241.150.0 – 139.241.150.255256
139.241.151.0/24139.241.151.0 – 139.241.151.255256
139.242.12.0/24139.242.12.0 – 139.242.12.255256
140.0.0.0/8 · 2 prefixes · 512 addresses
PrefixRangeAddresses
140.14.45.0/24140.14.45.0 – 140.14.45.255256
140.14.47.0/24140.14.47.0 – 140.14.47.255256
155.0.0.0/8 · 1 prefix · 256 addresses
PrefixRangeAddresses
155.7.180.0/24155.7.180.0 – 155.7.180.255256
156.0.0.0/8 · 5 prefixes · 1,280 addresses
PrefixRangeAddresses
156.112.113.0/24156.112.113.0 – 156.112.113.255256
156.112.114.0/24156.112.114.0 – 156.112.114.255256
156.112.135.0/24156.112.135.0 – 156.112.135.255256
156.112.166.0/24156.112.166.0 – 156.112.166.255256
156.112.167.0/24156.112.167.0 – 156.112.167.255256
159.0.0.0/8 · 13 prefixes · 3,328 addresses
PrefixRangeAddresses
159.77.33.0/24159.77.33.0 – 159.77.33.255256
159.77.34.0/24159.77.34.0 – 159.77.34.255256
159.77.35.0/24159.77.35.0 – 159.77.35.255256
159.77.44.0/24159.77.44.0 – 159.77.44.255256
159.77.46.0/24159.77.46.0 – 159.77.46.255256
159.77.47.0/24159.77.47.0 – 159.77.47.255256
159.77.79.0/24159.77.79.0 – 159.77.79.255256
159.77.80.0/24159.77.80.0 – 159.77.80.255256
159.77.81.0/24159.77.81.0 – 159.77.81.255256
159.77.84.0/24159.77.84.0 – 159.77.84.255256
159.77.85.0/24159.77.85.0 – 159.77.85.255256
159.77.106.0/24159.77.106.0 – 159.77.106.255256
159.77.107.0/24159.77.107.0 – 159.77.107.255256
163.0.0.0/8 · 19 prefixes · 6,400 addresses
PrefixRangeAddresses
163.251.0.0/24163.251.0.0 – 163.251.0.255256
163.251.96.0/22163.251.96.0 – 163.251.99.2551,024
163.251.101.0/24163.251.101.0 – 163.251.101.255256
163.251.104.0/24163.251.104.0 – 163.251.104.255256
163.251.105.0/24163.251.105.0 – 163.251.105.255256
163.251.112.0/24163.251.112.0 – 163.251.112.255256
163.251.113.0/24163.251.113.0 – 163.251.113.255256
163.251.128.0/24163.251.128.0 – 163.251.128.255256
163.251.129.0/24163.251.129.0 – 163.251.129.255256
163.251.160.0/24163.251.160.0 – 163.251.160.255256
163.251.161.0/24163.251.161.0 – 163.251.161.255256
163.251.184.0/24163.251.184.0 – 163.251.184.255256
163.251.185.0/24163.251.185.0 – 163.251.185.255256
163.251.208.0/24163.251.208.0 – 163.251.208.255256
163.251.209.0/24163.251.209.0 – 163.251.209.255256
163.251.239.0/24163.251.239.0 – 163.251.239.255256
163.251.244.0/22163.251.244.0 – 163.251.247.2551,024
163.251.248.0/24163.251.248.0 – 163.251.248.255256
163.251.254.0/24163.251.254.0 – 163.251.254.255256
164.0.0.0/8 · 1 prefix · 512 addresses
PrefixRangeAddresses
164.234.108.0/23164.234.108.0 – 164.234.109.255512
192.0.0.0/8 · 4 prefixes · 1,024 addresses
PrefixRangeAddresses
192.58.181.0/24192.58.181.0 – 192.58.181.255256
192.108.98.0/24192.108.98.0 – 192.108.98.255256
192.153.245.0/24192.153.245.0 – 192.153.245.255256
192.231.128.0/24192.231.128.0 – 192.231.128.255256
199.0.0.0/8 · 3 prefixes · 768 addresses
PrefixRangeAddresses
199.31.130.0/24199.31.130.0 – 199.31.130.255256
199.31.131.0/24199.31.131.0 – 199.31.131.255256
199.32.31.0/24199.32.31.0 – 199.32.31.255256
204.0.0.0/8 · 1 prefix · 256 addresses
PrefixRangeAddresses
204.34.155.0/24204.34.155.0 – 204.34.155.255256
205.0.0.0/8 · 3 prefixes · 768 addresses
PrefixRangeAddresses
205.56.194.0/24205.56.194.0 – 205.56.194.255256
205.68.64.0/24205.68.64.0 – 205.68.64.255256
205.100.3.0/24205.100.3.0 – 205.100.3.255256
206.0.0.0/8 · 1 prefix · 512 addresses
PrefixRangeAddresses
206.37.138.0/23206.37.138.0 – 206.37.139.255512
207.0.0.0/8 · 1 prefix · 256 addresses
PrefixRangeAddresses
207.132.100.0/24207.132.100.0 – 207.132.100.255256
214.0.0.0/8 · 30 prefixes · 13,312 addresses
PrefixRangeAddresses
214.4.241.0/24214.4.241.0 – 214.4.241.255256
214.16.244.0/24214.16.244.0 – 214.16.244.255256
214.16.245.0/24214.16.245.0 – 214.16.245.255256
214.23.244.0/24214.23.244.0 – 214.23.244.255256
214.23.245.0/24214.23.245.0 – 214.23.245.255256
214.23.246.0/24214.23.246.0 – 214.23.246.255256
214.24.182.0/24214.24.182.0 – 214.24.182.255256
214.24.215.0/24214.24.215.0 – 214.24.215.255256
214.29.156.0/22214.29.156.0 – 214.29.159.2551,024
214.38.198.0/23214.38.198.0 – 214.38.199.255512
214.48.8.0/24214.48.8.0 – 214.48.8.255256
214.48.12.0/22214.48.12.0 – 214.48.15.2551,024
214.48.72.0/22214.48.72.0 – 214.48.75.2551,024
214.48.76.0/22214.48.76.0 – 214.48.79.2551,024
214.48.108.0/22214.48.108.0 – 214.48.111.2551,024
214.48.116.0/22214.48.116.0 – 214.48.119.2551,024
214.51.109.0/24214.51.109.0 – 214.51.109.255256
214.51.110.0/24214.51.110.0 – 214.51.110.255256
214.54.128.0/22214.54.128.0 – 214.54.131.2551,024
214.54.133.0/24214.54.133.0 – 214.54.133.255256
214.54.135.0/24214.54.135.0 – 214.54.135.255256
214.54.136.0/24214.54.136.0 – 214.54.136.255256
214.54.140.0/24214.54.140.0 – 214.54.140.255256
214.72.4.0/24214.72.4.0 – 214.72.4.255256
214.72.5.0/24214.72.5.0 – 214.72.5.255256
214.72.6.0/24214.72.6.0 – 214.72.6.255256
214.72.14.0/24214.72.14.0 – 214.72.14.255256
214.72.15.0/24214.72.15.0 – 214.72.15.255256
214.72.16.0/24214.72.16.0 – 214.72.16.255256
214.95.108.0/24214.95.108.0 – 214.95.108.255256
215.0.0.0/8 · 5 prefixes · 1,280 addresses
PrefixRangeAddresses
215.1.4.0/24215.1.4.0 – 215.1.4.255256
215.1.33.0/24215.1.33.0 – 215.1.33.255256
215.1.48.0/24215.1.48.0 – 215.1.48.255256
215.1.84.0/24215.1.84.0 – 215.1.84.255256
215.65.72.0/24215.65.72.0 – 215.65.72.255256

IPv6 Prefixes

8 prefixes · 8 × /48 Routing data as of 2026-10-05 16:00 UTC

PrefixAddresses
2608:c101:1::/48280
2608:c102:1b83::/48280
2608:c143:1::/48280
2608:c143:46a3::/48280
2608:c144:2738::/48280
2608:c182::/48280
2608:c182:3cc7::/48280
2608:c183:1::/48280

BGP Neighbours

32 unique neighbours · 1 upstream/peer · 31 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
AS721DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD)11,163433,3547,585

Downstream side (31)

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

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS27046DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD)81113,3870
AS27137DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD)7799,1530
AS747DNIC-AS-00747 - Headquarters, USAISC63119,308328
AS1637DNIC-AS-01637 - Headquarters, USAISC61836,299329
AS427AFCONC-BLOCK1-AS - Air Force Systems Networking5152,2930
AS1516DNIC-ASBLK-01513-01518 - Headquarters, USAISC37517,989329
AS5927DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD)366687682
AS1600DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD)36055,4272,298
AS1649DNIC-AS-01649 - Headquarters, USAISC35719,950329
AS647DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD)302131,1880
AS637DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD)30024,2220
AS5972DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD)27949,0120
AS321DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)2746550
AS399AFCONC-BLOCK1-AS - Air Force Systems Networking2642,6240
AS409AFCONC-BLOCK1-AS - Air Force Systems Networking2644,2660
AS665DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD)2571,6400
AS5860DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD)2576540
AS3954DNIC-AS-03954 - United States Department of Defense (DoD)2542,6240
AS306DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)2533270
AS363DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)2533270
AS316DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)2523270
AS5284DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD)2526540
AS5958DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD)2526560
AS5982DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD)2523280
AS405AFCONC-BLOCK1-AS - Air Force Systems Networking2513280
AS619DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD)2516560
AS1908DNIC-AS-01908 - United States Department of Defense (DoD)2513270
AS27149DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD)2516540
AS27153DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD)2516540
AS3916OSIS-PACOM - Joint Intelligence Center Pacific2503270
AS6025DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD)2410658

Raw RDAP Response

{
  "endAutnum": 27159,
  "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/27066"
            },
            {
              "href": "https://whois.arin.net/rest/poc/MIL-HSTMST-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/27066"
            }
          ],
          "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/27066"
            },
            {
              "href": "https://whois.arin.net/rest/poc/REGIS10-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/27066"
            }
          ],
          "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/27066"
        },
        {
          "href": "https://whois.arin.net/rest/org/USDDD",
          "rel": "alternate",
          "type": "application/xml",
          "value": "https://rdap.arin.net/registry/autnum/27066"
        }
      ],
      "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": "2025-09-12T11:28:03-04:00"
    },
    {
      "eventAction": "registration",
      "eventDate": "2003-01-16T15:37:31-05:00"
    }
  ],
  "handle": "AS27032",
  "links": [
    {
      "href": "https://rdap.arin.net/registry/autnum/27032",
      "rel": "self",
      "type": "application/rdap+json",
      "value": "https://rdap.arin.net/registry/autnum/27066"
    },
    {
      "href": "https://whois.arin.net/rest/asn/AS27032",
      "rel": "alternate",
      "type": "application/xml",
      "value": "https://rdap.arin.net/registry/autnum/27066"
    }
  ],
  "name": "DNIC-ASBLK-27032-27159",
  "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/27066"
        }
      ],
      "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/27066"
        }
      ],
      "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": 27032,
  "status": [
    "active"
  ]
}

Contact details of private individuals are redacted.