Network topology

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

AS55904

Currently announcedSnapshot awaiting refresh

KOGAKUIN-AS

Last observed10/5/2026, 06:51:10Open ASN profile →

AS55904 relationship topology

Showing 2 / 2

AS55904KOGAKUIN-AS

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS2907SINET-AS

Relationship: Upstream
Observed weight: 374
ASN registration country: Japan
Latest RIS data: 10/29/2026, 00:00:00

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 374	SINET-AS	Upstream	Japan	8/25/2019, 00:00:00	10/29/2026, 00:00:00	662	328
AS2497Observed weight 258	IIJ - Internet Initiative Japan Inc.	Upstream	Japan	8/25/2019, 00:00:00	10/29/2026, 00:00:00	329	0

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