AS21077 ASPA Check - ISP4BAS Specialist Computer Centres Plc

Published

ISP4BAS Specialist Computer Centres Plc🇬🇧 - ASPA check for AS21077: the upstream transit providers AS21077 has authorized in its RPKI Autonomous System Provider Authorization (ASPA) object, and the networks that list AS21077 as their provider. Routers that validate ASPA use these records to detect route leaks in BGP paths.

ASPA Status
Published
Upstream Providers
2
Downstream Customers
0

How to read this ASPA check

The 2 providers below are the only networks allowed to appear directly above AS21077 in an AS-path. If AS21077 uses a transit provider that is missing from this list, routers that enforce ASPA treat its routes through that provider as invalid, so the list should include every current and backup transit provider. Peers do not belong in it.

Step-by-step ASPA check guide - including how to validate an AS-path hop by hop.

Peering Topology

AS21077 peering topology: 2 upstream providers and 0 downstream customersUpstreams: AS12703, AS39545. No downstreams.AS21077 - ISP4BAS Specialist Computer Centres PlcAS21077ISP4BAS Specialist Co…AS12703PULSANT-AS Pulsant (S…AS12703 - PULSANT-AS Pulsant (Scotland) LtdAS39545FLUIDATA Fluidone Ltd.AS39545 - FLUIDATA Fluidone Ltd.UPSTREAMSDOWNSTREAMS

Upstream Providers(2)

AS21077 authorizes these ASNs as upstream transit providers.

ASNName
AS12703🇬🇧PULSANT-AS Pulsant (Scotland) Ltd
AS39545🇬🇧FLUIDATA Fluidone Ltd.

ASPA object expires: 2026-10-12

Related Tools and Guides

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