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Autonomous System

AS647

United States Department of Defense (DoD)

Announced IPs
379,648
CIDR prefixes
225
ASN
AS647

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 v1.3.0 — 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 AS647 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)
205.71.96.0/20 AS647, AS5839 2026-11-13 18:39:11

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
138.183.0.0/17 32.8K
0.0%
United States Department of Defense DoD US — —
205.59.0.0/19 8.2K
0.0%
United States Department of Defense DoD US — —
205.60.0.0/19 8.2K
0.0%
United States Department of Defense DoD US — —
205.70.224.0/19 8.2K
0.0%
United States Department of Defense DoD US — —
205.71.0.0/19 8.2K
0.0%
United States Department of Defense DoD US — —
205.72.0.0/19 8.2K
0.0%
United States Department of Defense DoD US — —
205.72.96.0/19 8.2K
0.0%
United States Department of Defense DoD US — —
205.72.224.0/19 8.2K
0.0%
United States Department of Defense DoD US — —
205.74.192.0/19 8.2K
0.0%
United States Department of Defense DoD US — —
205.76.64.0/19 8.2K
0.0%
United States Department of Defense DoD US — —
205.95.0.0/19 8.2K
0.0%
United States Department of Defense DoD US — —
205.98.224.0/19 8.2K
0.0%
United States Department of Defense DoD US — —
205.58.0.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.58.176.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.59.192.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.68.0.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.69.0.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.70.208.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.71.64.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.71.224.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.72.80.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.72.208.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.73.80.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.73.112.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.75.144.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.78.192.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.80.0.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.83.128.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.83.192.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.84.32.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.89.64.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.89.224.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.90.0.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.90.64.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.90.96.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.90.160.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.91.128.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.91.160.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.92.0.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.92.32.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.94.0.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.94.192.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.95.96.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.98.64.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.98.160.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.99.0.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.99.32.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.99.128.0/20 4.1K
0.0%
United States Department of Defense DoD US — —
205.58.16.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.61.24.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.61.32.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.64.8.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.64.16.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.65.136.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.69.32.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.69.48.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.71.224.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.74.224.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.74.240.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.75.96.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.89.0.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.95.128.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.106.80.0/21 2.0K
0.0%
United States Department of Defense DoD US — —
205.56.92.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.59.80.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.59.100.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.59.208.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.60.100.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.60.188.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.60.240.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.61.0.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.61.88.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.64.4.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.65.32.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.65.160.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.65.180.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.71.84.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.78.80.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.78.100.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.79.84.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.80.72.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.80.80.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.80.156.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.86.96.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.86.192.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.87.208.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.89.8.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.89.32.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.89.128.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.91.64.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.103.96.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.106.72.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.106.100.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.107.220.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.108.12.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.108.20.0/22 1.0K
0.0%
United States Department of Defense DoD US — —
205.56.96.0/23 512
0.0%
United States Department of Defense DoD US — —
205.57.80.0/23 512
0.0%
United States Department of Defense DoD US — —
205.57.134.0/23 512
0.0%
United States Department of Defense DoD US — —
205.58.24.0/23 512
0.0%
United States Department of Defense DoD US — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS647 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
205.92.32.0/20 4,409,778 2026-11-13 18:40:07
205.108.12.0/22 2,562,388 2026-11-13 18:40:07
205.60.227.0/24 2,553,377 2026-11-13 18:40:07
205.88.87.0/24 2,438,112 2026-11-13 18:40:07
205.88.82.0/23 2,437,699 2026-11-13 18:40:07
205.88.84.0/24 2,437,454 2026-11-13 18:40:07
205.65.157.0/24 2,424,542 2026-11-13 18:40:07
205.80.158.0/24 2,095,265 2026-11-13 18:40:07
205.80.159.0/24 2,094,828 2026-11-13 18:40:07
205.80.157.0/24 2,094,604 2026-11-13 18:40:07
205.80.156.0/24 2,094,390 2026-11-13 18:40:07
205.65.68.0/23 2,027,720 2026-11-13 07:30:41
205.65.67.0/24 2,022,951 2026-11-13 07:30:41
205.65.66.0/23 2,021,934 2026-11-13 07:30:41
205.87.65.0/24 1,707,675 2026-11-13 18:40:07
205.87.64.0/24 1,705,593 2026-11-13 18:40:07
205.87.66.0/24 1,704,455 2026-11-13 18:40:07
205.65.136.0/22 1,221,899 2026-11-12 17:03:55
205.65.119.0/24 1,218,373 2026-11-12 17:03:55
205.65.116.0/24 1,218,326 2026-11-12 17:03:55
205.72.80.0/20 1,185,164 2026-11-13 18:40:07
205.72.84.0/24 1,128,748 2026-11-13 18:40:07
205.72.88.0/24 1,128,021 2026-11-13 18:40:07
205.72.86.0/24 1,127,740 2026-11-13 18:40:07
205.72.85.0/24 1,127,545 2026-11-13 18:40:07
205.60.240.0/22 1,102,771 2026-11-13 18:40:07
205.60.244.0/24 1,098,851 2026-11-13 18:40:07
205.60.228.0/24 951,031 2026-11-13 18:40:07
205.65.132.0/22 938,373 2026-08-28 11:12:51
205.102.243.0/24 865,427 2026-11-13 18:40:07
205.61.88.0/22 746,026 2026-11-13 18:40:07
205.68.49.0/24 741,632 2026-11-13 18:40:07
205.61.92.0/23 739,861 2026-11-13 18:40:07
205.61.198.0/23 727,283 2026-11-13 18:40:07
205.61.201.0/24 726,527 2026-11-13 18:40:07
205.72.240.0/20 682,593 2026-11-13 18:40:07
205.107.220.0/22 665,348 2026-11-13 01:37:06
205.72.244.0/24 650,541 2026-11-13 18:40:07
205.72.245.0/24 649,927 2026-11-13 18:40:07
205.72.246.0/24 649,483 2026-11-13 18:40:07
205.72.243.0/24 649,301 2026-11-13 18:40:07
205.83.128.0/20 641,560 2026-11-13 18:40:07
205.58.4.0/23 540,297 2026-11-13 18:40:07
205.58.20.0/23 539,803 2026-11-13 18:40:07
205.58.16.0/22 529,976 2026-11-13 18:40:07
205.58.16.0/21 529,338 2026-11-13 18:40:07
205.58.8.0/24 529,264 2026-11-13 18:40:07
205.58.12.0/22 528,926 2026-11-13 18:40:07
205.58.2.0/24 528,713 2026-11-13 18:40:07
205.58.1.0/24 528,657 2026-11-13 18:40:07

Showing top 50 of 700 announced prefixes by sample volume.

Frequently Asked Questions

What is AS647?

AS647 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 AS647 announce?

AS647 announces 379.6K IPv4 addresses distributed across 225 routed CIDR prefixes. The network is registered in United States.

Who operates AS647?

AS647 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 AS647 registered in?

AS647 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: 2026-11-13 18:39:05 UTC
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