Autonomous System

AS398658 — MICROSOFT-AZURE-DEDICATED - Microsoft Corporation(US)

Last fetched Thu, 21 May 2026 14:41:01 GMT

AS398658 is an Autonomous System operated by MICROSOFT-AZURE-DEDICATED - Microsoft Corporation and registered in US. As of Thu, 21 May 2026 14:41:01 GMT, it announces 0 routed IP prefixes and peers with 0 other Autonomous Systems in the WhisperGraph BGP dataset.

Nutrition Label

Routing footprint

AS398658 announces 0 distinct routed prefixes. The 0-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

AS398658 does not announce any prefixes in the current snapshot.

Peering ecosystem

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

AS398658 has no observed peering relationships in the current snapshot.

Blast radius

Approximate count of dependent hostnames if AS398658 disappeared from the routing table.

Blast radius: Computing — check back later. The precompute pipeline refreshes this panel within a few days.

MOAS / hijack watch

Prefixes routed by AS398658 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 AS398658 is unique to AS398658 in the current routing snapshot.

Threat posture

Pivot deeper into the graph from AS398658.

Cypher and MCP

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

MATCH (a:ASN {name: "AS398658"})-[: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.