AS138 — DNIC-AS-00138

AS138 announces 17 IPv4 prefixes covering 43,008 addresses and 0 IPv6 prefixes.

About this network

A US Department of Defense network (DNIC-AS-00138), registered through the Defense Network Information Center (DNIC), which holds many federal ASNs.

What it's used for

• US government / military networking.

Notable

• A US DoD allocation, not a commercial ISP or host. The low AS number, and the DNIC registration, mark it as an early-internet allocation to the federal government.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 131.66.44.0/22
• 131.66.48.0/22
• 131.66.246.0/24
• 131.66.249.0/24
• 131.66.250.0/23
• 131.66.252.0/24
• 141.234.0.0/17
• 144.183.15.0/24
• 144.183.16.0/23
• 144.183.20.0/24
• 144.183.32.0/22
• 144.183.127.0/24
• 144.183.128.0/22
• 144.183.196.0/22
• 144.183.200.0/21
• 144.183.216.0/24
• 144.183.227.0/24

Upstream networks

• AS27064 United States Department of Defense (DoD)

Adjacent networks

• AS27064 United States Department of Defense (DoD)