Autonomous System

AS1585 United States Department of Defense (DoD)

GovernmentActiveUnited StatesARIN

AS1585 (DNIC-ASBLK-01550-01601) is a government network operated by United States Department of Defense (DoD) in United States, registered with ARIN. It has 7 IPv4 prefixes with 12,032 addresses, which makes it the 9,300th largest of 82,476 active autonomous systems by IPv4 space.

IPv4 addresses12,032in 7 prefixes
IPv6 prefixes0none
Size rank#9,300of 82,476 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationUnited States Department of Defense (DoD)
AS nameDNIC-ASBLK-01550-01601
Websitedefense.gov
Country United States (US)
Network typeGovernment
RegistryARIN
Abuse contactdisa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
Registered2006-04-03
Last updated2025-09-12

IPv4 prefixes

7 prefixes · 12,032 addresses
NetworkAddressesFirst – last address
139.139.48.0/204,096139.139.48.0 – 139.139.63.255
139.139.144.0/204,096139.139.144.0 – 139.139.159.255
6.124.0.0/212,0486.124.0.0 – 6.124.7.255
139.139.112.0/221,024139.139.112.0 – 139.139.115.255
155.155.32.0/24256155.155.32.0 – 155.155.32.255
155.155.33.0/24256155.155.33.0 – 155.155.33.255
192.188.203.0/24256192.188.203.0 – 192.188.203.255

IPv6 prefixes

No IPv6 prefixes.

Query AS1585 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=AS1585&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS1585, with or without a key:

curl "https://api.ipapi.is/?q=139.139.48.1"

Other networks of United States Department of Defense (DoD)

6 of 111
AS749 United States Department of Defense (DoD)227,398,656 IPv4 addressesAS721 United States Department of Defense (DoD)72,987,904 IPv4 addressesAS56 United States Department of Defense (DoD)8,089,856 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)2,303,232 IPv4 addresses

Largest networks in United States

AS749 United States Department of Defense (DoD)227,398,656 IPv4 addressesAS16509 Amazon.com, Inc.218,439,168 IPv4 addressesAS7018 AT&T Enterprises, LLC117,261,056 IPv4 addressesAS8075 Microsoft Corporation81,465,600 IPv4 addressesAS721 United States Department of Defense (DoD)72,987,904 IPv4 addressesAS7922 Comcast Cable Communications, LLC68,337,664 IPv4 addresses