Network topology

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

AS12581

Currently announcedSnapshot awaiting refresh

tops.net GmbH & Co. KG · TOPSNET

Last observed9/30/2026, 07:21:06Open ASN profile →

AS12581 relationship topology

Showing 2 / 2

AS12581tops.net GmbH & Co. KG

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS8422NETCOLOGNE NetCologne Gesellschaft fur Telekommunikation mbH

Relationship: Upstream
Observed weight: 489
ASN registration country: Germany
Latest RIS data: 10/31/2026, 00:00:00

Open AS8422 profile →

All adjacent autonomous systems

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2 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS8422Observed weight 489	NETCOLOGNE NetCologne Gesellschaft fur Telekommunikation mbH	Upstream	Germany	8/19/2019, 00:00:00	10/31/2026, 00:00:00	1,242	1,048
AS3257Observed weight 61	GTT-BACKBONE GTT Communications Inc.	Upstream	Germany	8/19/2019, 00:00:00	10/31/2026, 00:00:00	132	32

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