Network topology

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

AS21077

Currently announcedSnapshot awaiting refresh

Specialist Computer Centres Plc · ISP4BAS

Last observed10/1/2026, 06:38:52Open ASN profile →

AS21077 relationship topology

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AS21077Specialist Computer Cen…

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS39545FLUIDATA Fluidone Ltd.

Relationship: Upstream
Observed weight: 303
ASN registration country: United Kingdom
Latest RIS data: 9/30/2026, 00:00:00

Open AS39545 profile →

All adjacent autonomous systems

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

1 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4	IPv6
AS39545Observed weight 303	FLUIDATA Fluidone Ltd.	Upstream	United Kingdom	8/21/2019, 00:00:00	9/30/2026, 00:00:00	4,260	0

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