AS306 — DNIC-ASBLK-00306-00371

AS306 announces 34 IPv4 prefixes covering 4,492,544 addresses and 51 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, and announces a large amount of address space.

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

Announced prefixes

• 55.10.0.0/16
• 55.15.0.0/16
• 55.17.0.0/16
• 55.22.69.0/24
• 55.25.5.0/24
• 55.38.0.0/16
• 55.44.0.0/16
• 55.51.0.0/16
• 55.61.0.0/16
• 55.68.0.0/16
• 55.85.0.0/16
• 55.86.2.0/24
• 55.194.0.0/16
• 132.79.0.0/16
• 132.80.0.0/12
• 132.96.0.0/11
• 132.128.0.0/14
• 132.132.0.0/15
• 132.134.0.0/16
• 132.135.0.0/20
• 132.135.16.0/22
• 132.135.21.0/24
• 132.135.22.0/23
• 132.135.24.0/21
• 132.135.32.0/19
• 132.135.64.0/18
• 132.135.128.0/17
• 132.136.0.0/16
• 132.141.0.0/18
• 132.141.128.0/18
• 132.142.0.0/21
• 132.142.9.0/24
• 132.142.10.0/24
• 132.142.131.0/24
• 2608:10a:7311::/48
• 2608:10a:7320::/46
• 2608:10a:7336::/48
• 2608:10a:7347::/48
• 2608:10a:7356::/48
• 2608:10a:7360::/48
• 2608:10b:3800::/40
• 2608:12a:7413::/48
• 2608:12a:7415::/48
• 2608:12a:7425::/48
• 2608:12a:7426::/48
• 2608:12a:7435::/48
• 2608:12a:7437::/48
• 2608:12a:7441::/48
• 2608:12a:7444::/48
• 2608:12a:7446::/48
• 2608:12a:7453::/48
• 2608:12a:7455::/48
• 2608:14a:7516::/47
• 2608:14a:7523::/48
• 2608:14a:7524::/48
• 2608:14a:7527::/48
• 2608:14a:7529::/48
• 2608:14a:7531::/48
• 2608:14a:7532::/48
• 2608:14a:7539::/48
• 2608:14a:7540::/48
• 2608:14a:7545::/48
• 2608:14a:7549::/48
• 2608:14a:7551::/48
• 2608:14a:7557::/48
• 2608:14a:7563::/48
• 2608:16a:7100::/40
• 2608:16a:7630::/48
• 2608:16a:7643::/48
• 2608:16a:7659::/48
• 2608:16a:7661::/48
• 2608:16a:7671::/48
• 2608:16a:7672::/48
• 2608:16a:7679::/48
• 2608:18b:7710::/48
• 2608:18b:7718::/47
• 2608:18b:7728::/48
• 2608:18b:7734::/48
• 2608:18b:7750::/48
• 2608:18b:7752::/48
• 2608:18b:7754::/48
• 2608:18b:7758::/48
• 2609:e0f6:9941::/48
• 2609:e0f6:9950::/48
• 2609:e0f6:9958::/48

Upstream networks

• AS1540 Headquarters, USAISC
• AS367 United States Department of Defense (DoD)
• AS27066 United States Department of Defense (DoD)

Downstream networks

• AS335 United States Department of Defense (DoD)
• AS344 United States Department of Defense (DoD)
• AS370 United States Department of Defense (DoD)
• AS325 United States Department of Defense (DoD)
• AS337 United States Department of Defense (DoD)
• AS362 United States Department of Defense (DoD)
• AS369 United States Department of Defense (DoD)
• AS334 United States Department of Defense (DoD)
• AS356 United States Department of Defense (DoD)
• AS326 United States Department of Defense (DoD)
• AS336 United States Department of Defense (DoD)
• AS348 United States Department of Defense (DoD)
• AS366 United States Department of Defense (DoD)
• AS1530 Headquarters, USAISC
• AS357 United States Department of Defense (DoD)
• AS349 United States Department of Defense (DoD)
• AS361 United States Department of Defense (DoD)
• AS351 United States Department of Defense (DoD)
• AS329 United States Department of Defense (DoD)
• AS364 United States Department of Defense (DoD)
• AS321 United States Department of Defense (DoD)
• AS316 United States Department of Defense (DoD)
• AS346 United States Department of Defense (DoD)
• AS319 United States Department of Defense (DoD)
• AS317 United States Department of Defense (DoD)

Adjacent networks

• AS1540 Headquarters, USAISC
• AS335 United States Department of Defense (DoD)
• AS344 United States Department of Defense (DoD)
• AS370 United States Department of Defense (DoD)
• AS325 United States Department of Defense (DoD)
• AS348 United States Department of Defense (DoD)
• AS367 United States Department of Defense (DoD)
• AS337 United States Department of Defense (DoD)
• AS362 United States Department of Defense (DoD)
• AS369 United States Department of Defense (DoD)
• AS334 United States Department of Defense (DoD)
• AS356 United States Department of Defense (DoD)
• AS326 United States Department of Defense (DoD)
• AS336 United States Department of Defense (DoD)
• AS366 United States Department of Defense (DoD)
• AS1530 Headquarters, USAISC
• AS357 United States Department of Defense (DoD)
• AS349 United States Department of Defense (DoD)
• AS361 United States Department of Defense (DoD)
• AS351 United States Department of Defense (DoD)
• AS329 United States Department of Defense (DoD)
• AS364 United States Department of Defense (DoD)
• AS321 United States Department of Defense (DoD)
• AS316 United States Department of Defense (DoD)
• AS346 United States Department of Defense (DoD)