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Autonomous System

AS326

United States Department of Defense (DoD)

Announced IPs
35,328
CIDR prefixes
30
ASN
AS326

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

73/100
Moderate
How this score is built
  • Baseline (neutral) 65
  • Government allocation +8
  • Trust score 73 / 100

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

About High Performance Computing Modernization Program

The United States Department of Defense High Performance Computing Modernization Program (HPCMP) was initiated in 1992 in response to Congressional direction to modernize the Department of Defense (DoD) laboratories’ high performance computing capabilities. The HPCMP provides supercomputers, a national research network, high-end software tools, a secure environment, and computational science experts that together enable the Defense laboratories and test centers to conduct research, development, test and technology evaluation activities.

Headquarters
Vicksburg
Summary from Wikipedia, CC BY-SA 4.0 · Data from Wikidata

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
55.189.0.0/19 8.2K
0.0%
United States Department of Defense DoD US
55.189.64.0/19 8.2K
0.0%
United States Department of Defense DoD US
55.224.16.0/20 4.1K
0.0%
United States Department of Defense DoD US
55.224.64.0/20 4.1K
0.0%
United States Department of Defense DoD US
55.189.40.0/21 2.0K
0.0%
United States Department of Defense DoD US
55.189.32.0/22 1.0K
0.0%
United States Department of Defense DoD US
55.224.12.0/22 1.0K
0.0%
United States Department of Defense DoD US
55.189.58.0/23 512
0.0%
United States Department of Defense DoD US
55.190.2.0/23 512
0.0%
United States Department of Defense DoD US
55.190.84.0/23 512
0.0%
United States Department of Defense DoD US
55.189.36.0/24 256
0.0%
United States Department of Defense DoD US
55.189.96.0/24 256
0.0%
United States Department of Defense DoD US
55.189.180.0/24 256
0.0%
United States Department of Defense DoD US
55.190.8.0/24 256
0.0%
United States Department of Defense DoD US
55.190.80.0/24 256
0.0%
United States Department of Defense DoD US
55.190.82.0/24 256
0.0%
United States Department of Defense DoD US
55.190.88.0/24 256
0.0%
United States Department of Defense DoD US
55.190.97.0/24 256
0.0%
United States Department of Defense DoD US
55.190.200.0/24 256
0.0%
United States Department of Defense DoD US
55.190.254.0/24 256
0.0%
United States Department of Defense DoD US
55.224.1.0/24 256
0.0%
United States Department of Defense DoD US
55.224.7.0/24 256
0.0%
United States Department of Defense DoD US
55.224.8.0/24 256
0.0%
United States Department of Defense DoD US
55.224.80.0/24 256
0.0%
United States Department of Defense DoD US
55.224.82.0/24 256
0.0%
United States Department of Defense DoD US
55.224.86.0/24 256
0.0%
United States Department of Defense DoD US
55.224.88.0/24 256
0.0%
United States Department of Defense DoD US
55.224.96.0/24 256
0.0%
United States Department of Defense DoD US
55.224.98.0/24 256
0.0%
United States Department of Defense DoD US
55.224.103.0/24 256
0.0%
United States Department of Defense DoD US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS326 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
55.189.96.0/24 83,175 2026-09-15 17:12:34
55.189.80.0/20 81,684 2026-09-15 17:12:34
55.190.82.0/24 79,728 2026-09-15 17:12:34
55.189.58.0/23 78,886 2026-09-15 17:12:34
55.190.3.0/24 78,132 2026-09-15 17:12:34
55.189.0.0/20 78,073 2026-09-15 17:12:34
55.189.40.0/21 78,064 2026-09-15 17:12:34
55.190.88.0/24 78,039 2026-09-15 17:12:34
55.190.8.0/24 78,022 2026-09-15 17:12:34
55.189.180.0/24 77,983 2026-09-15 17:12:34
55.190.80.0/24 77,981 2026-09-15 17:12:34
55.190.2.0/24 77,918 2026-09-15 17:12:34
55.189.64.0/20 77,914 2026-09-15 17:12:34
55.190.84.0/24 77,904 2026-09-15 17:12:34
55.189.16.0/20 77,903 2026-09-15 17:12:34
55.190.85.0/24 77,805 2026-09-15 17:12:34
55.189.36.0/24 77,790 2026-09-15 17:12:34
55.190.200.0/24 77,711 2026-09-15 17:12:34
55.189.34.0/23 77,708 2026-09-15 17:12:34
55.190.97.0/24 77,704 2026-09-15 17:12:34
55.189.32.0/23 77,625 2026-09-15 17:12:34
55.190.254.0/24 77,514 2026-09-15 17:12:34
55.224.12.0/22 50,917 2026-09-15 17:09:39
55.224.64.0/20 50,643 2026-09-15 17:09:39
55.224.98.0/24 50,642 2026-09-15 17:09:39
55.224.88.0/24 50,636 2026-09-15 17:09:39
55.224.16.0/20 50,575 2026-09-15 17:09:39
55.224.1.0/24 50,557 2026-09-15 17:09:39
55.224.103.0/24 50,533 2026-09-15 17:09:39
55.224.86.0/24 50,335 2026-09-15 17:09:39
55.224.82.0/24 50,139 2026-09-15 17:09:39
55.224.80.0/24 50,129 2026-09-15 17:09:39
55.224.8.0/24 50,121 2026-09-15 17:09:39
55.224.7.0/24 50,084 2026-09-15 17:09:39
55.224.96.0/24 49,945 2026-09-15 17:09:39

Frequently Asked Questions

What is AS326?

AS326 is an Autonomous System Number assigned to United States Department of Defense (DoD). An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS326 announce?

AS326 announces 35.3K IPv4 addresses distributed across 30 routed CIDR prefixes. The network is registered in United States.

Who operates AS326?

AS326 is operated by United States Department of Defense DoD. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS326 registered in?

AS326 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-09-15 17:24:05 UTC
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