Network topology

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

AS131

Currently announcedSnapshot awaiting refresh

University of California, Santa Barbara · UCSB-NET-AS

Last observed10/28/2026, 14:00:11Open ASN profile →

AS131 relationship topology

Showing 2 / 2

AS131University of Californi…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS2152CENIC-2152 - CENIC

Relationship: Upstream
Observed weight: 478
ASN registration country: United States
Latest RIS data: 11/2/2026, 00:00:00

Open AS2152 profile →

All adjacent autonomous systems

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2 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS2152Observed weight 478	CENIC-2152 - CENIC	Upstream	United States	8/19/2019, 00:00:00	11/2/2026, 00:00:00	1,619	351
AS2153Observed weight 9	CENIC-2153 - CENIC	Upstream	United States	8/19/2019, 00:00:00	11/2/2026, 00:00:00	45	0

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