Network topology

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

AS33981

Currently announcedSnapshot awaiting refresh

TSYS-AS Total System Services Processing Europe Limited · TSYS-AS

Last observed10/2/2026, 16:52:01Open ASN profile →

AS33981 relationship topology

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AS33981TSYS-AS Total System Se…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS2856BT-UK-AS British Telecommunications Limited

Relationship: Upstream
Observed weight: 524
ASN registration country: United Kingdom
Latest RIS data: 10/2/2026, 00:00:00

Open AS2856 profile →

All adjacent autonomous systems

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1 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS2856Observed weight 524	BT-UK-AS British Telecommunications Limited	Upstream	United Kingdom	8/21/2019, 00:00:00	10/2/2026, 00:00:00	668	0

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