AS320 — DNIC-ASBLK-00306-00371

AS320 announces 8 IPv4 prefixes covering 65,280 addresses and 1 IPv6 prefixes.

About this network

An early US Department of Defense allocation from the block DNIC-ASBLK-00306-00371, registered to the DoD Network Information Center (DNIC).

What it's used for

• US government / military network operations. The specific site or unit is not publicly identified in the block registration.

Notable

• A government / DoD network, not a commercial ISP or host. It sits in a contiguous block of low-numbered ASNs (00306–00371) held by the DoD Network Information Center from the internet's earliest years.

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

Announced prefixes

• 55.25.0.0/22
• 55.25.4.0/24
• 55.25.6.0/23
• 55.25.8.0/21
• 55.25.16.0/20
• 55.25.32.0/19
• 55.25.64.0/18
• 55.25.128.0/17
• 2608:16a:3000::/40

Upstream networks

• AS306 United States Department of Defense (DoD)

Adjacent networks

• AS306 United States Department of Defense (DoD)

Routing security

• RPKI: 0 valid, 0 invalid and 3 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 0 route objects.
• Listed in as-sets: AS199746:AS-BLACKLIST, AS204464:AS-BLACKLIST.