Network topology

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

AS159

Currently announcedSnapshot awaiting refresh

Ohio State University · OSUNET-AS

Last observed9/29/2026, 05:53:05Open ASN profile →

AS159 relationship topology

Showing 2 / 2

AS159Ohio State University

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS600OARnet

Relationship: Upstream
Observed weight: 182
ASN registration country: United States
Latest RIS data: 10/23/2026, 00:00:00

Open AS600 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
AS600Observed weight 182	OARnet	Upstream	United States	8/19/2019, 00:00:00	10/23/2026, 00:00:00	1,405	174
AS3112Observed weight 4	OARNET-AS-1 - OARnet	Upstream	United States	8/19/2019, 00:00:00	10/23/2026, 00:00:00	12	0

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