Autonomous System

AS21871 — IPGMO - THE INTERPUBLIC GROUP OF COMPANIES, INC.(US)

Last fetched Thu, 21 May 2026 10:27:26 GMT

AS21871 is an Autonomous System operated by IPGMO - THE INTERPUBLIC GROUP OF COMPANIES, INC. and registered in US. As of Thu, 21 May 2026 10:27:26 GMT, it announces 0 routed IP prefixes and peers with 0 other Autonomous Systems in the WhisperGraph BGP dataset.

Nutrition Label

Routing footprint

AS21871 announces 0 distinct routed prefixes. The 0-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

AS21871 does not announce any prefixes in the current snapshot.

Peering ecosystem

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

AS21871 has no observed peering relationships in the current snapshot.

Blast radius

Approximate count of dependent hostnames if AS21871 disappeared from the routing table.

No dependent hostnames recorded for this network.Snapshot Thu, 21 May 2026 10:27:26 GMT.

MOAS / hijack watch

Prefixes routed by AS21871 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 AS21871 is unique to AS21871 in the current routing snapshot.

Threat posture

Pivot deeper into the graph from AS21871.

Cypher and MCP

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

MATCH (a:ASN {name: "AS21871"})-[: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.