All ASNs

Autonomous System details for AS306

AS306

United States Department of Defense (DoD) • mail.mil

AS306 — United States Department of Defense (DoD)

AS Name

DNIC-ASBLK-00306-00371

Country

United States (US)

Website

mail.mil

Number of IPv4

4,662,784

Number of IPv6

1.29 × 10²⁷

ASN type

Government

Status

Assigned

Registry

ARIN

Allocated

June 30, 1989

Last updated

September 12, 2025

IP Ranges

273 IPv4 prefixes, 48 IPv6 prefixes

Prefix	Company	Number of IPs
55.10.0.0/16	Headquarters, USAISC	65,536
55.15.0.0/16	Headquarters, USAISC	65,536
55.15.200.0/22	Headquarters, USAISC	1,024
55.17.0.0/16	Headquarters, USAISC	65,536
55.17.73.0/24	Headquarters, USAISC	256
55.22.69.0/24	Headquarters, USAISC	256
55.25.5.0/24	Headquarters, USAISC	256
55.38.0.0/16	Headquarters, USAISC	65,536
55.44.0.0/16	Headquarters, USAISC	65,536
55.51.0.0/16	Headquarters, USAISC	65,536
55.61.0.0/16	Headquarters, USAISC	65,536
55.68.0.0/16	Headquarters, USAISC	65,536
55.85.0.0/16	Headquarters, USAISC	65,536
55.85.15.0/24	Headquarters, USAISC	256
55.85.16.0/24	Headquarters, USAISC	256
55.85.20.0/24	Headquarters, USAISC	256
55.85.22.0/24	Headquarters, USAISC	256
55.85.23.0/24	Headquarters, USAISC	256
55.85.27.0/24	Headquarters, USAISC	256
55.85.29.0/24	Headquarters, USAISC	256
55.85.30.0/24	Headquarters, USAISC	256
55.85.34.0/24	Headquarters, USAISC	256
55.85.35.0/24	Headquarters, USAISC	256
55.85.43.0/24	Headquarters, USAISC	256
55.85.60.0/23	Headquarters, USAISC	512
55.85.64.0/23	Headquarters, USAISC	512
55.85.66.0/23	Headquarters, USAISC	512
55.85.80.0/23	Headquarters, USAISC	512
55.85.84.0/23	Headquarters, USAISC	512
55.85.86.0/23	Headquarters, USAISC	512
55.85.100.0/23	Headquarters, USAISC	512
55.85.104.0/23	Headquarters, USAISC	512
55.85.106.0/23	Headquarters, USAISC	512
55.85.120.0/23	Headquarters, USAISC	512
55.85.124.0/23	Headquarters, USAISC	512
55.85.126.0/23	Headquarters, USAISC	512
55.85.150.0/24	Headquarters, USAISC	256
55.86.2.0/24	Headquarters, USAISC	256
55.194.0.0/16	Headquarters, USAISC	65,536
132.79.0.0/16	Headquarters, USAISC	65,536
132.79.15.0/24	Headquarters, USAISC	256
132.79.16.0/24	Headquarters, USAISC	256
132.79.70.0/24	Headquarters, USAISC	256
132.79.128.0/19	Headquarters, USAISC	8,192
132.79.128.0/24	Headquarters, USAISC	256
132.80.0.0/16	Headquarters, USAISC	65,536
132.80.130.0/24	Headquarters, USAISC	256
132.81.0.0/16	Headquarters, USAISC	65,536
132.81.198.0/24	Headquarters, USAISC	256
132.81.242.0/24	Headquarters, USAISC	256
132.81.253.0/24	Headquarters, USAISC	256
132.82.0.0/16	Headquarters, USAISC	65,536
132.82.198.0/24	Headquarters, USAISC	256
132.82.253.0/24	Headquarters, USAISC	256
132.83.0.0/16	Headquarters, USAISC	65,536
132.83.48.0/21	Headquarters, USAISC	2,048
132.83.122.0/24	Headquarters, USAISC	256
132.83.127.0/24	Headquarters, USAISC	256
132.83.253.0/24	Headquarters, USAISC	256
132.83.254.0/24	Headquarters, USAISC	256
132.84.0.0/16	Headquarters, USAISC	65,536
132.84.12.0/24	Headquarters, USAISC	256
132.84.198.0/24	Headquarters, USAISC	256
132.84.200.0/24	Headquarters, USAISC	256
132.84.253.0/24	Headquarters, USAISC	256
132.85.0.0/16	Headquarters, USAISC	65,536
132.85.198.0/24	Headquarters, USAISC	256
132.85.253.0/24	Headquarters, USAISC	256
132.86.0.0/16	Headquarters, USAISC	65,536
132.86.253.0/24	Headquarters, USAISC	256
132.87.0.0/16	Headquarters, USAISC	65,536
132.87.198.0/24	Headquarters, USAISC	256
132.87.253.0/24	Headquarters, USAISC	256
132.88.0.0/16	Headquarters, USAISC	65,536
132.89.0.0/16	Headquarters, USAISC	65,536
132.89.253.0/24	Headquarters, USAISC	256
132.90.0.0/16	Headquarters, USAISC	65,536
132.90.40.0/21	Headquarters, USAISC	2,048
132.90.48.0/21	Headquarters, USAISC	2,048
132.90.253.0/24	Headquarters, USAISC	256
132.91.0.0/16	Headquarters, USAISC	65,536
132.92.0.0/16	Headquarters, USAISC	65,536
132.92.40.0/21	Headquarters, USAISC	2,048
132.92.253.0/24	Headquarters, USAISC	256
132.93.0.0/16	Headquarters, USAISC	65,536
132.93.40.0/21	Headquarters, USAISC	2,048
132.93.253.0/24	Headquarters, USAISC	256
132.94.0.0/16	Headquarters, USAISC	65,536
132.94.40.0/21	Headquarters, USAISC	2,048
132.94.48.0/21	Headquarters, USAISC	2,048
132.94.242.0/24	Headquarters, USAISC	256
132.94.253.0/24	Headquarters, USAISC	256
132.95.0.0/16	Headquarters, USAISC	65,536
132.95.40.0/21	Headquarters, USAISC	2,048
132.95.48.0/21	Headquarters, USAISC	2,048
132.95.253.0/24	Headquarters, USAISC	256
132.96.0.0/16	Headquarters, USAISC	65,536
132.96.0.0/19	Headquarters, USAISC	8,192
132.96.198.0/24	Headquarters, USAISC	256
132.96.241.0/24	Headquarters, USAISC	256
2608:10a:7311::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:10a:7320::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:10a:7321::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:10a:7322::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:10a:7336::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:10a:7347::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:10a:7356::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:10a:7360::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:10b:3800::/40	United States Department of Defense (DoD)	3.09 × 10²⁶
2608:12a:2500::/40	United States Department of Defense (DoD)	3.09 × 10²⁶
2608:12a:7413::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:12a:7415::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:12a:7437::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:12a:7441::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:12a:7446::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:12a:7455::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:14a:7516::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:14a:7524::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:14a:7527::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:14a:7529::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:14a:7531::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:14a:7532::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:14a:7539::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:14a:7542::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:14a:7545::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:14a:7549::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:14a:7551::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:14a:7563::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:16a:7100::/40	United States Department of Defense (DoD)	3.09 × 10²⁶
2608:16a:7630::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:16a:7643::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:16a:7659::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:16a:7661::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:16a:7671::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:16a:7672::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:16b:7200::/40	United States Department of Defense (DoD)	3.09 × 10²⁶
2608:18b:7710::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:18b:7718::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:18b:7719::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:18b:7728::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:18b:7734::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:18b:7750::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:18b:7752::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:18b:7754::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2608:18b:7758::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2609:e0f6:9941::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2609:e0f6:9950::/48	United States Department of Defense (DoD)	1.21 × 10²⁴
2609:e0f6:9958::/48	United States Department of Defense (DoD)	1.21 × 10²⁴

This table only shows the first 100 of the set of IPv4 and IPv6 prefixes. All data is available via our IP data API.

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS306

2 peers

AS367 AS1540

AS306 peers with these other Autonomous Systems.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS306

1 upstreams

AS27066

AS306 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS306 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS306

52 downstreams

AS316 AS317 AS319 AS320 AS321 AS322 AS323 AS324 AS325 AS326 AS327 AS328 AS329 AS331 AS334 AS335 AS336 AS337 AS338 AS339 AS340 AS341 AS342 AS343 AS344 AS345 AS346 AS347 AS348 AS349 AS350 AS351 AS352 AS353 AS355 AS356 AS357 AS358 AS359 AS360 AS361 AS362 AS364 AS365 AS366 AS368 AS369 AS370 AS371 AS500 AS1530 AS13979

AS306 provides internet connectivity to these downstream Autonomous Systems.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.