Autonomous System

AS27066 United States Department of Defense (DoD)

GovernmentActiveUnited StatesARIN

AS27066 (DNIC-ASBLK-27032-27159) is a government network operated by United States Department of Defense (DoD) in United States, registered with ARIN. It has 109 IPv4 prefixes with 35,584 addresses and 8 IPv6 prefixes, which makes it the 5,039th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses35,584in 109 prefixes
IPv6 prefixes8≈ 9.7 × 10²⁴ addresses
Size rank#5,039of 82,200 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationUnited States Department of Defense (DoD)
AS nameDNIC-ASBLK-27032-27159
Websitedefense.gov
Country United States (US)
Network typeGovernment
RegistryARIN
Abuse contactdisa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
Registered2003-01-16
Last updated2025-09-12

IPv4 prefixes

109 prefixes · 35,584 addresses
NetworkAddressesFirst – last address
163.251.96.0/221,024163.251.96.0 – 163.251.99.255
163.251.244.0/221,024163.251.244.0 – 163.251.247.255
214.29.156.0/221,024214.29.156.0 – 214.29.159.255
214.48.12.0/221,024214.48.12.0 – 214.48.15.255
214.48.72.0/221,024214.48.72.0 – 214.48.75.255
214.48.76.0/221,024214.48.76.0 – 214.48.79.255
214.48.108.0/221,024214.48.108.0 – 214.48.111.255
214.48.116.0/221,024214.48.116.0 – 214.48.119.255
214.54.128.0/221,024214.54.128.0 – 214.54.131.255
164.234.108.0/23512164.234.108.0 – 164.234.109.255
206.37.138.0/23512206.37.138.0 – 206.37.139.255
214.38.198.0/23512214.38.198.0 – 214.38.199.255
134.229.134.0/24256134.229.134.0 – 134.229.134.255
134.229.136.0/24256134.229.136.0 – 134.229.136.255
134.229.176.0/24256134.229.176.0 – 134.229.176.255
134.229.177.0/24256134.229.177.0 – 134.229.177.255
134.229.178.0/24256134.229.178.0 – 134.229.178.255
139.241.72.0/24256139.241.72.0 – 139.241.72.255
139.241.73.0/24256139.241.73.0 – 139.241.73.255
139.241.74.0/24256139.241.74.0 – 139.241.74.255
139.241.75.0/24256139.241.75.0 – 139.241.75.255
139.241.76.0/24256139.241.76.0 – 139.241.76.255
139.241.77.0/24256139.241.77.0 – 139.241.77.255
139.241.129.0/24256139.241.129.0 – 139.241.129.255
139.241.131.0/24256139.241.131.0 – 139.241.131.255
The 25 largest of 109. The API and the database have all of them.

IPv6 prefixes

8 prefixes
  • 2608:c101:1::/48
  • 2608:c102:1b83::/48
  • 2608:c143:1::/48
  • 2608:c143:46a3::/48
  • 2608:c144:2738::/48
  • 2608:c182::/48
  • 2608:c182:3cc7::/48
  • 2608:c183:1::/48

Query AS27066 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=AS27066&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS27066, with or without a key:

curl "https://api.ipapi.is/?q=163.251.96.1"

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 addressesAS5972 United States Department of Defense (DoD)2,298,624 IPv4 addresses

Largest networks in United States

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