Network topology

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

AS51545

Currently announcedSnapshot awaiting refresh

zsah Limited · ZSAH

Last observed11/1/2026, 15:31:27Open ASN profile →

AS51545 relationship topology

Showing 3 / 3

AS51545zsah Limited

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS25180EXPONENTIAL-E-AS Exponential-E Ltd.

Relationship: Upstream
Observed weight: 258
ASN registration country: United Kingdom
Latest RIS data: 10/4/2026, 00:00:00

Open AS25180 profile →

All adjacent autonomous systems

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

3 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4
AS25180Observed weight 258	EXPONENTIAL-E-AS Exponential-E Ltd.	Upstream	United Kingdom	8/25/2019, 00:00:00	10/4/2026, 00:00:00	332
AS1299Observed weight 165	TWELVE99 Arelion Sweden AB	Upstream	Sweden	8/25/2019, 00:00:00	10/4/2026, 00:00:00	690
AS174Observed weight 81	COGENT-174 - Cogent Communications, LLC	Upstream	United States	8/25/2019, 00:00:00	10/4/2026, 00:00:00	294

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