Network topology

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

AS17944

Currently announcedSnapshot awaiting refresh

JWA - Japan Weather Association · JWA

Last observed9/30/2026, 21:03:37Open ASN profile →

AS17944 relationship topology

Showing 4 / 4

AS17944Japan Weather Associati…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS2519VECTANT - ARTERIA Networks Corporation

Relationship: Upstream
Observed weight: 362
ASN registration country: Japan
Latest RIS data: 9/30/2026, 00:00:00

Open AS2519 profile →

All adjacent autonomous systems

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4 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS2519Observed weight 362	VECTANT - ARTERIA Networks Corporation	Upstream	Japan	8/19/2019, 00:00:00	9/30/2026, 00:00:00	602	129
AS8220Observed weight 277	COLT COLT Technology Services Group Limited	Upstream	United Kingdom	8/19/2019, 00:00:00	9/30/2026, 00:00:00	967	165
AS2497Observed weight 97	IIJ - Internet Initiative Japan Inc.	Upstream	Japan	8/19/2019, 00:00:00	9/30/2026, 00:00:00	129	71
AS2907Observed weight 16	SINET-AS - Research Organization of Information and Systems, National Institute of Informatics	Upstream	Japan	8/19/2019, 00:00:00	9/30/2026, 00:00:00	26	8

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