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Autonomous System

AS5927

United States Department of Defense (DoD)

Announced IPs
5,888
CIDR prefixes
14
ASN
AS5927

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.

61/100
Moderate
How this score is built
  • Baseline (neutral) 65
  • Active-threat / abuse risk −12
  • Government allocation +8
  • Trust score 61 / 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

⚠ 1 MOAS prefix — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS5927 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
111.119.186.0/24 AS5927, AS59257 2026-09-11 05:25:52

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS5927 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
192.240.135.0/24 75,737 2026-09-11 04:01:13
192.240.131.0/24 64,269 2026-09-11 04:56:09
192.240.133.0/24 53,224 2026-09-11 04:01:13
192.240.140.0/24 31,684 2026-09-11 04:01:12
214.72.20.0/24 31,037 2026-09-11 04:01:12
214.72.30.0/24 30,995 2026-09-11 04:01:12
192.240.130.0/24 16,099 2026-09-11 04:56:05
192.240.134.0/24 14,933 2026-09-11 04:01:00
192.240.137.0/24 14,632 2026-09-11 04:01:12
192.112.38.0/24 14,574 2026-09-11 04:01:12
192.240.143.0/24 14,572 2026-09-11 04:01:12
192.240.141.0/24 14,570 2026-09-11 04:01:12
192.240.138.0/24 14,560 2026-09-11 04:01:12
192.240.142.0/24 14,546 2026-09-11 04:01:12
192.240.139.0/24 14,528 2026-09-11 04:01:12
207.132.116.0/24 14,002 2026-09-11 04:01:12
192.240.128.0/24 12,725 2026-09-11 04:55:57
192.240.145.0/24 12,599 2026-09-11 04:01:35
192.240.132.0/24 12,585 2026-09-11 04:01:35
192.240.144.0/24 12,579 2026-09-11 04:01:35
207.132.117.0/24 11,946 2026-09-11 04:01:35
214.37.176.0/24 11,780 2026-09-11 04:56:09
192.112.36.0/24 7,996 2026-09-11 04:56:08
111.119.186.0/24 476 2026-09-10 20:18:11
199.252.155.0/24 63 2026-09-05 17:02:15

Frequently Asked Questions

What is AS5927?

AS5927 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 AS5927 announce?

AS5927 announces 5.9K IPv4 addresses distributed across 14 routed CIDR prefixes. The network is registered in United States.

Who operates AS5927?

AS5927 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 AS5927 registered in?

AS5927 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: 2026-09-11 05:09:06 UTC
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