Network topology

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

AS51941

Currently announcedSnapshot awaiting refresh

BASEN-EU BaseN Oy · BASEN-EU

Last observed10/4/2026, 19:07:26Open ASN profile →

AS51941 relationship topology

Showing 3 / 3

AS51941BASEN-EU BaseN Oy

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS6667EUNET-FINLAND Elisa Oyj

Relationship: Upstream
Observed weight: 353
ASN registration country: Finland
Latest RIS data: 10/28/2026, 00:00:00

Open AS6667 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	IPv6
AS6667Observed weight 353	EUNET-FINLAND Elisa Oyj	Upstream	Finland	8/25/2019, 00:00:00	10/28/2026, 00:00:00	1,028	1,082
AS174Observed weight 232	COGENT-174 - Cogent Communications, LLC	Upstream	United States	8/25/2019, 00:00:00	10/28/2026, 00:00:00	486	379
AS2914Observed weight 158	NTT-DATA-2914 - NTT America, Inc.	Upstream	United States	8/25/2019, 00:00:00	10/28/2026, 00:00:00	140	183

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