Autonomous System

AS204939 — TAC-COMMUNICATIONS-UK - TAC COMMUNICATIONS LTD(GB)

Last fetched Sun, 06 Sep 2026 18:37:34 GMT

AS204939 is an Autonomous System operated by TAC-COMMUNICATIONS-UK - TAC COMMUNICATIONS LTD and registered in GB. As of Sun, 06 Sep 2026 18:37:34 GMT, it announces 2 routed IP prefixes and peers with 1 other Autonomous System in the WhisperGraph BGP dataset.

Nutrition Label

Routing footprint

AS204939 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
AS9009	M247 - M247 Europe SRL	RO

Blast radius

Count of dependent hostnames if AS204939 disappeared from the routing table.

8 hostnames depend on this network.Exact count across all 2 announced prefixes. Snapshot Sat, 27 Jun 2026 06:00:25 GMT.

MOAS / hijack watch

Prefixes routed by AS204939 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 AS204939 is unique to AS204939 in the current routing snapshot.

Threat posture

Pivot deeper into the graph from AS204939.

Cypher and MCP

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

MATCH (a:ASN {name: "AS204939"})-[: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.