$ query “AS306” --type=asn → 1 result(s)

AS306 · DNIC-ASBLK-00306-00371

United States Department of Defense (DoD)

AS306 is owned by United States Department of Defense (DoD) and is a mid-size transit provider, registered in the United States since 1989. The system announces an impressive 4.5 million IPv4 addresses, including a /12, and supports IPv6. Its primary geographic footprint is in Australia, with additional presence in the United States. This AS's prefix announcements have been recently modified.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • Pioneer — Registered before the year 2000

Basic Information

Country
🇺🇸 United States
Category
Government/Public Administration
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
June 30, 1989
Last Changed
March 04, 2026
Last Seen
April 27, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
282 / 30
IPv6 Prefixes (raw / aggregated)
61 / 59
IPv4 Addresses
4 493 056
Largest IPv4 Prefix
/12 (1 048 576 addresses)
Largest IPv6 Prefix
/40
Geolocated Countries
🇦🇺 Australia (2 657 280 IPs), 🇺🇸 United States (2 032 384 IPs)
Prefix Changed
April 27, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
1 upstream providing transit
Peers
2 networks exchanging traffic without transit
Downstream Customers
51 downstreams buying transit
Unclassified
4 unclassified BGP neighbors
Degree
58 unique BGP neighbors
Reach
51 networks in customer cone

Upstream Providers (1)

  • AS27066 — DNIC-ASBLK-27032-27159

Prefix Lists

IPv4 Prefixes (282 total)

  • 132.80.0.0/12 (1 048 576 addresses (/12 prefix))
  • 132.112.0.0/12 (1 048 576 addresses (/12 prefix))
  • 132.128.0.0/13 (524 288 addresses (/13 prefix))
  • 132.96.0.0/13 (524 288 addresses (/13 prefix))
  • 132.104.0.0/14 (262 144 addresses (/14 prefix))
  • 132.110.0.0/15 (131 072 addresses (/15 prefix))
  • 55.51.0.0/16 (65 536 addresses (/16 prefix))
  • 55.44.0.0/16 (65 536 addresses (/16 prefix))
  • 55.61.0.0/16 (65 536 addresses (/16 prefix))
  • 55.68.0.0/16 (65 536 addresses (/16 prefix))
  • 55.78.0.0/16 (65 536 addresses (/16 prefix))
  • 55.85.0.0/16 (65 536 addresses (/16 prefix))
  • 55.10.0.0/16 (65 536 addresses (/16 prefix))
  • 55.194.0.0/16 (65 536 addresses (/16 prefix))
  • 132.79.0.0/16 (65 536 addresses (/16 prefix))
  • 132.136.0.0/16 (65 536 addresses (/16 prefix))
  • 55.38.0.0/16 (65 536 addresses (/16 prefix))
  • 55.15.0.0/16 (65 536 addresses (/16 prefix))
  • 132.108.0.0/16 (65 536 addresses (/16 prefix))
  • 55.17.0.0/16 (65 536 addresses (/16 prefix))
  • 132.141.128.0/18 (16 384 addresses (/18 prefix))
  • 132.141.0.0/18 (16 384 addresses (/18 prefix))
  • 132.142.0.0/21 (2 048 addresses (/21 prefix))
  • 55.86.2.0/24 (256 addresses (/24 prefix))
  • 55.22.69.0/24 (256 addresses (/24 prefix))
  • 55.25.5.0/24 (256 addresses (/24 prefix))
  • 132.142.9.0/24 (256 addresses (/24 prefix))
  • 132.142.10.0/24 (256 addresses (/24 prefix))
  • 132.142.131.0/24 (256 addresses (/24 prefix))
  • 132.142.135.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (61 total)

  • 2608:10a:6000::/40
  • 2608:10b:3800::/40
  • 2608:12a:2500::/40
  • 2608:12b:3500::/40
  • 2608:14a:2300::/40
  • 2608:16b:7200::/40
  • 2608:16a:7100::/40
  • 2608:10a:7320::/47
  • 2608:18b:7718::/47
  • 2608:14a:7524::/48
  • 2608:14a:7542::/48
  • 2608:10a:7356::/48
  • 2608:10a:7360::/48
  • 2608:12a:7413::/48
  • 2608:12a:7415::/48
  • 2608:12a:7425::/48
  • 2608:12a:7426::/48
  • 2608:12a:7433::/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
  • 2608:12a:7464::/48
  • 2608:14a:7516::/48
  • 2608:14a:7523::/48
  • 2608:10a:7338::/48
  • 2608:14a:7527::/48
  • 2608:14a:7529::/48
  • 2608:14a:7531::/48
  • 2608:14a:7532::/48
  • 2608:14a:7539::/48
  • 2608:10a:7347::/48
  • 2608:14a:7545::/48
  • 2608:14a:7549::/48
  • 2608:14a:7551::/48
  • 2608:14a:7563::/48
  • 2608:10a:7336::/48
  • 2608:16a:7630::/48
  • 2608:16a:7643::/48
  • 2608:16a:7659::/48
  • 2608:16a:7661::/48
  • 2608:16a:7662::/48
  • 2608:16a:7671::/48
  • 2608:16a:7672::/48
  • 2608:10a:7322::/48
  • 2608:18b:7710::/48
  • 2608:10a:7311::/48
  • and 9 more