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AS300

United States Department of Defense (DoD)

ARIN US active Announced
More ASNs in the United States →
Organization
United States Department of Defense (DoD)
DNIC-AS-00300
Registered
Jun 15, 1989
37 years ago
IPv4 Prefixes
35
96,512 addresses
IPv6 Prefixes
1
1 × /48
BGP Neighbours
1
1 upstream/peer · 0 downstream

Registration

AS Number AS300 AS Name DNIC-AS-00300 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 Jun 15, 1989 Record Created Jun 15, 1989 Last Updated Sep 12, 2025 Status
active
WHOIS Server whois.arin.net AS Description DNIC-AS-00300 - United States Department of Defense (DoD), US Abuse Email [email protected] Abuse Phone +1-844-347-2457;ext2

IPv4 Prefixes

35 prefixes · 96,512 addresses · 34 top-level Routing data as of 2026-10-09 08:00 UTC

PrefixRangeAddresses
156.112.74.0/24156.112.74.0 – 156.112.74.255256
156.112.75.0/24156.112.75.0 – 156.112.75.255256
156.112.76.0/24156.112.76.0 – 156.112.76.255256
156.112.78.0/24156.112.78.0 – 156.112.78.255256
156.112.134.0/24156.112.134.0 – 156.112.134.255256
156.112.171.0/24156.112.171.0 – 156.112.171.255256
158.15.0.0/16158.15.0.0 – 158.15.255.25565,536
158.15.226.0/24158.15.226.0 – 158.15.226.255256
160.137.96.0/24160.137.96.0 – 160.137.96.255256
160.137.102.0/24160.137.102.0 – 160.137.102.255256
160.137.132.0/22160.137.132.0 – 160.137.135.2551,024
160.137.136.0/22160.137.136.0 – 160.137.139.2551,024
164.235.104.0/21164.235.104.0 – 164.235.111.2552,048
199.211.153.0/24199.211.153.0 – 199.211.153.255256
199.252.0.0/23199.252.0.0 – 199.252.1.255512
204.222.212.0/24204.222.212.0 – 204.222.212.255256
209.22.250.0/24209.22.250.0 – 209.22.250.255256
214.3.158.0/24214.3.158.0 – 214.3.158.255256
214.3.159.0/24214.3.159.0 – 214.3.159.255256
214.3.160.0/24214.3.160.0 – 214.3.160.255256
214.3.177.0/24214.3.177.0 – 214.3.177.255256
214.4.13.0/24214.4.13.0 – 214.4.13.255256
214.4.14.0/24214.4.14.0 – 214.4.14.255256
214.4.15.0/24214.4.15.0 – 214.4.15.255256
214.4.138.0/24214.4.138.0 – 214.4.138.255256
214.4.139.0/24214.4.139.0 – 214.4.139.255256
214.4.143.0/24214.4.143.0 – 214.4.143.255256
214.23.0.0/21214.23.0.0 – 214.23.7.2552,048
214.23.24.0/21214.23.24.0 – 214.23.31.2552,048
214.23.48.0/20214.23.48.0 – 214.23.63.2554,096
214.23.64.0/21214.23.64.0 – 214.23.71.2552,048
214.23.79.0/24214.23.79.0 – 214.23.79.255256
214.23.248.0/21214.23.248.0 – 214.23.255.2552,048
214.38.224.0/24214.38.224.0 – 214.38.224.255256
214.66.0.0/19214.66.0.0 – 214.66.31.2558,192

IPv6 Prefixes

1 prefix · 1 × /48 Routing data as of 2026-10-09 08:00 UTC

PrefixAddresses
2608:184::/48280

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.

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
AS27064DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD)34711,612334

Raw RDAP Response

{
  "endAutnum": 300,
  "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/300"
            },
            {
              "href": "https://whois.arin.net/rest/poc/MIL-HSTMST-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/300"
            }
          ],
          "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/300"
            },
            {
              "href": "https://whois.arin.net/rest/poc/REGIS10-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/300"
            }
          ],
          "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/300"
        },
        {
          "href": "https://whois.arin.net/rest/org/USDDD",
          "rel": "alternate",
          "type": "application/xml",
          "value": "https://rdap.arin.net/registry/autnum/300"
        }
      ],
      "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": "2025-09-12T09:51:13-04:00"
    },
    {
      "eventAction": "registration",
      "eventDate": "1989-06-15T00:00:00-04:00"
    }
  ],
  "handle": "AS300",
  "links": [
    {
      "href": "https://rdap.arin.net/registry/autnum/300",
      "rel": "self",
      "type": "application/rdap+json",
      "value": "https://rdap.arin.net/registry/autnum/300"
    },
    {
      "href": "https://whois.arin.net/rest/asn/AS300",
      "rel": "alternate",
      "type": "application/xml",
      "value": "https://rdap.arin.net/registry/autnum/300"
    }
  ],
  "name": "DNIC-AS-00300",
  "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/300"
        }
      ],
      "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/300"
        }
      ],
      "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": 300,
  "status": [
    "active"
  ]
}

Contact details of private individuals are redacted.