Network topology

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

AS2501

Currently announcedSnapshot awaiting refresh

UTnet

Last observed9/29/2026, 08:59:07Open ASN profile →

AS2501 relationship topology

Showing 2 / 2

AS2501UTnet

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS2907SINET-AS - Research Organization of Information and Systems, National Institute of Informatics

Relationship: Upstream
Observed weight: 341
ASN registration country: Japan
Latest RIS data: 10/24/2026, 08:00:00

Open AS2907 profile →

All adjacent autonomous systems

The table preserves every relationship in the selected filter; graph limits and pagination never remove data.

2 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS2907Observed weight 341	SINET-AS - Research Organization of Information and Systems, National Institute of Informatics	Upstream	Japan	8/19/2019, 00:00:00	10/24/2026, 08:00:00	1,021	535
AS2500Observed weight 13	WIDE-BB - WIDE Project	Upstream	Japan	8/19/2019, 00:00:00	10/24/2026, 08:00:00	76	0

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