AS27139 — DNIC-ASBLK-27032-27159

AS27139 announces 24 IPv4 prefixes covering 7,680 addresses and 0 IPv6 prefixes.

About this network

The AS handle DNIC-ASBLK-27032-27159 is held by the United States Department of Defense (DoD).

What it's used for

• The address space carries military network infrastructure, with netnames such as AF-ACC-26NOS-128-26 (Air Force Systems Networking) and NETBLK-NIC-BLK1 (Navy Network Information Center).
• The AS announces 7936 IPv4 addresses across 23 prefixes, while maintaining only 3 observed neighbours, indicating a highly segmented internal corporate estate rather than a transit or access network.

Notable

• Registrants include Air Force Systems Networking, DoD Network Information Center, and Navy Network Information Center, all consistent with the DoD announcer.
• The inventory is dominated by the 128.26.0.0/16 range, with smaller blocks in 139.242.0.0/16, 198.201.0.0/16, 198.218.0.0/16, 205.58.0.0/16, 205.60.0.0/16, 205.73.0.0/16, and 214.0.0.0/8.

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

Announced prefixes

• 128.26.42.0/24
• 128.26.57.0/24
• 128.26.61.0/24
• 128.26.62.0/24
• 128.26.67.0/24
• 128.26.70.0/24
• 128.26.118.0/23
• 128.26.120.0/23
• 128.26.123.0/24
• 128.26.124.0/23
• 128.26.128.0/23
• 139.242.34.0/23
• 198.201.162.0/24
• 198.218.16.0/24
• 205.58.100.0/23
• 205.58.103.0/24
• 205.60.234.0/24
• 205.73.188.0/24
• 214.6.251.0/24
• 214.25.144.0/24
• 214.25.253.0/24
• 214.29.98.0/24
• 214.29.101.0/24
• 214.64.70.0/24

Upstream networks

• AS5231 United States Department of Defense (DoD)
• AS27065 United States Department of Defense (DoD)

Downstream networks

• AS3471 United States Department of Defense (DoD)

Adjacent networks

• AS27065 United States Department of Defense (DoD)
• AS5231 United States Department of Defense (DoD)
• AS3471 United States Department of Defense (DoD)

Routing security

• RPKI: 0 valid, 0 invalid and 29 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.