AS1637 — DNIC-AS-01637 - Headquarters, USAISC(US)

Nutrition Label

Routing footprint

AS1637 announces 125 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

• 6.16.88.0/24
• 6.16.89.0/24
• 6.134.24.0/22
• 143.46.5.0/24
• 143.46.8.0/23
• 143.46.10.0/24
• 143.46.11.0/24
• 143.46.12.0/24
• 143.46.17.0/24
• 143.46.18.0/24
• 143.46.20.0/24
• 143.46.21.0/24
• 143.46.22.0/24
• 143.46.23.0/24
• 143.46.24.0/24
• 143.46.25.0/24
• 143.46.26.0/24
• 143.46.27.0/24
• 143.46.32.0/24
• 143.46.33.0/24
• 143.46.34.0/24
• 143.46.35.0/24
• 143.46.36.0/24
• 143.46.37.0/24
• 143.46.39.0/24

Peering ecosystem

1 distinct peers via BGP. The first 1 are listed below.

Blast radius

Approximate count of dependent hostnames if AS1637 disappeared from the routing table.

~103,263 hostnames depend on this network.Sampled from 10 prefixes, snapshot Thu, 21 May 2026 01:09:06 GMT.

MOAS / hijack watch

Prefixes routed by AS1637 that another Autonomous System also announces. A non-empty list is one of the strongest BGP-hijack signals available without active probes.

No active MOAS conflicts. Every prefix announced by AS1637 is unique to AS1637 in the current routing snapshot.

Threat posture

Related pages

Pivot deeper into the graph from AS1637.

• Country · US
• Peer · DNIC-ASBLK-27032-27159 - United States Department of Defense DoDAS27066
• Prefix · 6.16.88.0/24
• Live MOAS conflicts feed
• Threat feed · Spamhaus DROP
• Whisper Internet Directory — home

Cypher and MCP

Reproduce the headline metric directly against graph.whisper.security:

MATCH (a:ASN {name: "AS1637"})-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (a)-[:HAS_COUNTRY]->(c:COUNTRY)
RETURN a.name AS asn, n.name AS operator, c.name AS country

Or query Whisper from your own LLM workflow via the Whisper MCP server.