Autonomous System

AS11657 — LEGG-MASON-CORP-NET - Legg Mason & Co., LLC(US)

Last fetched Thu, 21 May 2026 11:14:49 GMT

AS11657 is an Autonomous System operated by LEGG-MASON-CORP-NET - Legg Mason & Co., LLC and registered in US. As of Thu, 21 May 2026 11:14:49 GMT, it announces 2 routed IP prefixes and peers with 1 other Autonomous System in the WhisperGraph BGP dataset.

Nutrition Label

Routing footprint

AS11657 announces 2 distinct routed prefixes. The 2-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

Peering ecosystem

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

Peer ASN	Operator	Country
AS13335	CLOUDFLARENET - Cloudflare, Inc.	US

Blast radius

Approximate count of dependent hostnames if AS11657 disappeared from the routing table.

~10 hostnames depend on this network.Sampled from 10 prefixes, snapshot Thu, 21 May 2026 11:14:49 GMT.

MOAS / hijack watch

Prefixes routed by AS11657 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 AS11657 is unique to AS11657 in the current routing snapshot.

Threat posture

Pivot deeper into the graph from AS11657.

Cypher and MCP

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

MATCH (a:ASN {name: "AS11657"})-[: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.