Autonomous System

AS5972 United States Department of Defense (DoD)

GovernmentActiveUnited StatesARIN

AS5972 (DNIC-ASBLK-05800-06055) is a government network operated by United States Department of Defense (DoD) in United States, registered with ARIN. It has 1,467 IPv4 prefixes with 2,298,624 addresses, which makes it the 235th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses2,298,624in 1,467 prefixes
IPv6 prefixes0none
Size rank#235of 82,200 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationUnited States Department of Defense (DoD)
AS nameDNIC-ASBLK-05800-06055
Websitedefense.gov
Country United States (US)
Network typeGovernment
RegistryARIN
Abuse contactdisa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
Registered1995-10-24
Last updated2025-09-12

IPv4 prefixes

1,467 prefixes · 2,298,624 addresses
NetworkAddressesFirst – last address
164.248.0.0/14262,144164.248.0.0 – 164.251.255.255
139.38.0.0/15131,072139.38.0.0 – 139.39.255.255
128.44.0.0/1665,536128.44.0.0 – 128.44.255.255
141.236.0.0/1665,536141.236.0.0 – 141.236.255.255
144.146.0.0/1665,536144.146.0.0 – 144.146.255.255
155.220.0.0/1665,536155.220.0.0 – 155.220.255.255
159.71.0.0/1665,536159.71.0.0 – 159.71.255.255
143.83.128.0/1732,768143.83.128.0 – 143.83.255.255
164.167.0.0/1732,768164.167.0.0 – 164.167.127.255
204.208.128.0/1732,768204.208.128.0 – 204.208.255.255
214.17.0.0/1732,768214.17.0.0 – 214.17.127.255
214.17.128.0/1732,768214.17.128.0 – 214.17.255.255
214.78.0.0/1732,768214.78.0.0 – 214.78.127.255
164.65.0.0/1816,384164.65.0.0 – 164.65.63.255
164.65.128.0/1816,384164.65.128.0 – 164.65.191.255
164.65.192.0/1816,384164.65.192.0 – 164.65.255.255
164.248.128.0/1816,384164.248.128.0 – 164.248.191.255
164.249.128.0/1816,384164.249.128.0 – 164.249.191.255
199.226.64.0/1816,384199.226.64.0 – 199.226.127.255
214.47.0.0/1816,384214.47.0.0 – 214.47.63.255
214.79.0.0/1816,384214.79.0.0 – 214.79.63.255
128.44.128.0/198,192128.44.128.0 – 128.44.159.255
138.138.0.0/198,192138.138.0.0 – 138.138.31.255
138.138.64.0/198,192138.138.64.0 – 138.138.95.255
138.138.192.0/198,192138.138.192.0 – 138.138.223.255
The 25 largest of 1,467. The API and the database have all of them.

IPv6 prefixes

No IPv6 prefixes.

Query AS5972 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS5972&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS5972, with or without a key:

curl "https://api.ipapi.is/?q=164.248.0.1"

Other networks of United States Department of Defense (DoD)

6 of 108
AS749 United States Department of Defense (DoD)227,464,192 IPv4 addressesAS721 United States Department of Defense (DoD)73,070,080 IPv4 addressesAS56 United States Department of Defense (DoD)8,082,944 IPv4 addressesAS306 United States Department of Defense (DoD)4,666,880 IPv4 addressesAS668 United States Department of Defense (DoD)2,558,464 IPv4 addressesAS367 United States Department of Defense (DoD)2,114,304 IPv4 addresses

Largest networks in United States

AS749 United States Department of Defense (DoD)227,464,192 IPv4 addressesAS16509 Amazon.com, Inc.218,038,784 IPv4 addressesAS7018 AT&T Enterprises, LLC117,262,080 IPv4 addressesAS8075 Microsoft Corporation81,463,040 IPv4 addressesAS721 United States Department of Defense (DoD)73,070,080 IPv4 addressesAS7922 Comcast Cable Communications, LLC68,336,896 IPv4 addresses