Network topology

Relationships come from RIS AS_PATH observations; direction represents path position, not a commercial contract or traffic direction.

AS4583

Currently announcedSnapshot awaiting refresh

West Publishing Corporation · THOMSON-REUTERS

Last observed9/29/2026, 12:56:15Open ASN profile →

AS4583 relationship topology

Showing 4 / 4

AS4583West Publishing Corpora…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS2686ATGS-MMD-AS - AT&T Enterprises, LLC

Relationship: Upstream
Observed weight: 260
ASN registration country: United States
Latest RIS data: 10/13/2026, 00:00:00

Open AS2686 profile →

All adjacent autonomous systems

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4 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4
AS2686Observed weight 260	ATGS-MMD-AS - AT&T Enterprises, LLC	Upstream	United States	8/19/2019, 00:00:00	10/13/2026, 00:00:00	681
AS7018Observed weight 202	ATT-INTERNET4 - AT&T Enterprises, LLC	Upstream	United States	8/19/2019, 00:00:00	10/13/2026, 00:00:00	529
AS3356Observed weight 200	LEVEL3 - Level 3 Parent, LLC	Upstream	United States	8/19/2019, 00:00:00	10/13/2026, 00:00:00	649
AS6461Observed weight 136	ZAYO-6461 - Zayo Bandwidth	Upstream	United States	8/19/2019, 00:00:00	10/13/2026, 00:00:00	483

CHA.LA ASN relationship snapshotRelationships are normalized by CHA.LA from collected routing observations and registration context.CHA.LA routing observations · registration context