Autonomous System

AS400577 — MICROSOFT-AZURE-DEDICATED - Microsoft Corporation(US)

Last fetched Thu, 21 May 2026 06:16:54 GMT

AS400577 is an Autonomous System operated by MICROSOFT-AZURE-DEDICATED - Microsoft Corporation and registered in US. As of Thu, 21 May 2026 06:16:54 GMT, it announces 0 routed IP prefixes and peers with 0 other Autonomous Systems in the WhisperGraph BGP dataset.

Nutrition Label

Routing footprint

AS400577 announces 0 distinct routed prefixes. The 0-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

AS400577 does not announce any prefixes in the current snapshot.

Peering ecosystem

0 distinct peers via BGP. The first 0 are listed below.

AS400577 has no observed peering relationships in the current snapshot.

MOAS / hijack watch

Prefixes routed by AS400577 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 AS400577 is unique to AS400577 in the current routing snapshot.

Threat posture

Pivot deeper into the graph from AS400577.

Cypher and MCP

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

MATCH (a:ASN {name: "AS400577"})-[: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.