AS16557 — COLOSOLUTIONS - Colo Solutions(US)

Nutrition Label

Routing footprint

AS16557 announces 31 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

• 66.103.128.0/24
• 66.103.129.0/24
• 66.103.130.0/24
• 66.103.131.0/24
• 66.103.132.0/24
• 66.103.133.0/24
• 66.103.134.0/24
• 66.103.135.0/24
• 66.103.128.0/20
• 66.103.143.0/24
• 66.103.128.0/19
• 66.103.145.0/24
• 66.103.146.0/24
• 66.103.147.0/24
• 66.103.148.0/24
• 66.103.150.0/24
• 66.103.151.0/24
• 66.103.159.0/24
• 72.21.8.0/24
• 72.21.9.0/24
• 72.21.12.0/24
• 72.21.13.0/24
• 72.21.14.0/24
• 72.21.20.0/24
• 72.21.22.0/24

Peering ecosystem

9 distinct peers via BGP. The first 9 are listed below.

Blast radius

Count of dependent hostnames if AS16557 disappeared from the routing table.

12,215 hostnames depend on this network.Exact count across all 31 announced prefixes. Snapshot Mon, 08 Jun 2026 12:00:24 GMT.

MOAS / hijack watch

Prefixes routed by AS16557 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 AS16557 is unique to AS16557 in the current routing snapshot.

Threat posture

Related pages

Pivot deeper into the graph from AS16557.

• Country · US
• Peer · COGENT-174 - Cogent Communications, LLCAS174
• Prefix · 66.103.128.0/24
• Live MOAS conflicts feed
• Threat feed · Spamhaus DROP
• Browse this ASN range · 16000-16999
• Glossary · What is BGP?
• Whisper Internet Directory — home

Cypher and MCP

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

MATCH (a:ASN {name: "AS16557"})-[: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.