AS27501 — ISPNET-AS - isp.net(US)

Nutrition Label

Routing footprint

AS27501 announces 78 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

• 64.72.96.0/24
• 64.72.97.0/24
• 64.72.98.0/24
• 64.72.99.0/24
• 64.72.100.0/24
• 64.72.101.0/24
• 64.72.102.0/24
• 64.72.103.0/24
• 64.72.96.0/20
• 64.72.104.0/24
• 64.72.105.0/24
• 64.72.106.0/24
• 64.72.107.0/24
• 64.72.108.0/24
• 64.72.109.0/24
• 64.72.110.0/24
• 64.72.111.0/24
• 64.250.224.0/24
• 64.250.225.0/24
• 64.250.226.0/24
• 64.250.227.0/24
• 64.250.228.0/24
• 64.250.230.0/24
• 64.250.231.0/24
• 64.250.232.0/24

Peering ecosystem

7 distinct peers via BGP. The first 7 are listed below.

Blast radius

Count of dependent hostnames if AS27501 disappeared from the routing table.

20,927 hostnames depend on this network.Exact count across all 67 announced prefixes. Snapshot Sat, 25 Jul 2026 01:00:46 GMT.

MOAS / hijack watch

Prefixes routed by AS27501 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 AS27501 is unique to AS27501 in the current routing snapshot.

Threat posture

Related pages

Pivot deeper into the graph from AS27501.

• Country · US
• Peer · TPC-1 - Tutor Perini CorporationAS1446
• Prefix · 64.72.96.0/24
• Live MOAS conflicts feed
• Threat feed · Spamhaus DROP
• Browse this ASN range · 27000-27999
• Glossary · What is BGP?
• Whisper Internet Directory — home

Cypher and MCP

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

MATCH (a:ASN {name: "AS27501"})-[: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.