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Autonomous System

AS27087

United States Department of Defense (DoD)

Announced IPs
34,304
CIDR prefixes
30
ASN
AS27087

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
140.185.96.0/19 8.2K
15.2%
United States Department of Defense DoD US
130.16.48.0/20 4.1K
3.1%
United States Department of Defense DoD US
140.185.80.0/20 4.1K
27.8%
United States Department of Defense DoD US
214.14.64.0/20 4.1K
38.4%
United States Department of Defense DoD US
214.14.56.0/21 2.0K
0.1%
United States Department of Defense DoD US
214.14.176.0/21 2.0K
84.6%
United States Department of Defense DoD US
140.185.160.0/22 1.0K
91.7%
United States Department of Defense DoD US
140.185.192.0/22 1.0K
58.0%
United States Department of Defense DoD US
140.185.200.0/22 1.0K
0.0%
United States Department of Defense DoD US
140.185.164.0/23 512
90.2%
United States Department of Defense DoD US
140.185.168.0/23 512
0.0%
United States Department of Defense DoD US
140.185.198.0/23 512
0.0%
United States Department of Defense DoD US
140.185.206.0/23 512
0.2%
United States Department of Defense DoD US
214.14.120.0/23 512
0.0%
United States Department of Defense DoD US
140.185.6.0/24 256
0.0%
United States Department of Defense DoD US
140.185.47.0/24 256
9.8%
United States Department of Defense DoD US
140.185.153.0/24 256
0.0%
United States Department of Defense DoD US
140.185.155.0/24 256
79.7%
United States Department of Defense DoD US
140.185.166.0/24 256
12.1%
United States Department of Defense DoD US
140.185.170.0/24 256
0.0%
United States Department of Defense DoD US
140.185.185.0/24 256
0.0%
United States Department of Defense DoD US
140.185.186.0/24 256
0.0%
United States Department of Defense DoD US
140.185.197.0/24 256
0.0%
United States Department of Defense DoD US
140.185.205.0/24 256
0.0%
United States Department of Defense DoD US
140.185.238.0/24 256
0.4%
United States Department of Defense DoD US
140.185.244.0/24 256
0.0%
United States Department of Defense DoD US
214.14.124.0/24 256
0.0%
United States Department of Defense DoD US
214.14.214.0/24 256
95.7%
United States Department of Defense DoD US
214.14.232.0/24 256
0.0%
United States Department of Defense DoD US
214.14.238.0/24 256
47.7%
United States Department of Defense DoD US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS27087 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
214.14.61.0/24 23,019 2026-09-16 03:29:46
214.14.63.0/24 21,702 2026-09-16 03:29:46
214.14.68.0/24 21,664 2026-09-16 03:29:46
214.14.214.0/24 21,609 2026-09-16 03:29:46
214.14.120.0/23 21,543 2026-09-16 03:29:46
214.14.124.0/24 21,517 2026-09-16 03:29:46
140.185.153.0/24 18,369 2026-09-16 03:29:46
140.185.186.0/24 18,355 2026-09-16 03:29:46
140.185.185.0/24 18,299 2026-09-16 03:29:46
140.185.119.0/24 18,209 2026-09-16 03:29:46
140.185.82.0/23 15,458 2026-09-16 03:29:46
130.16.48.0/20 13,854 2026-09-16 03:27:02
140.185.6.0/24 13,576 2026-09-16 03:29:46
140.185.155.0/24 13,517 2026-09-16 03:29:46
140.185.47.0/24 13,422 2026-09-16 03:27:02
140.185.192.0/20 13,398 2026-09-16 03:27:02
140.185.160.0/21 13,358 2026-09-16 03:27:02
140.185.96.0/19 13,351 2026-09-16 03:27:02
140.185.170.0/24 13,343 2026-09-16 03:27:02
140.185.168.0/23 13,342 2026-09-16 03:27:02
140.185.244.0/24 13,341 2026-09-16 03:27:02
140.185.238.0/24 13,314 2026-09-16 03:27:02
140.185.80.0/20 13,290 2026-09-16 03:27:02
214.14.238.0/24 12,690 2026-09-16 03:29:46
214.14.182.0/23 11,143 2026-09-16 03:29:46
214.14.178.0/23 11,080 2026-09-16 03:29:46
214.14.176.0/23 11,016 2026-09-16 03:29:46
214.14.180.0/23 11,010 2026-09-16 03:29:46
214.14.64.0/20 10,878 2026-09-16 03:28:19
214.14.232.0/24 10,869 2026-09-16 03:29:46
214.14.56.0/21 10,848 2026-09-16 03:28:19

Frequently Asked Questions

What is AS27087?

AS27087 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 AS27087 announce?

AS27087 announces 34.3K IPv4 addresses distributed across 30 routed CIDR prefixes. The network is registered in United States.

Who operates AS27087?

AS27087 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 AS27087 registered in?

AS27087 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: 2026-09-16 04:09:06 UTC
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