AS9011 ASPA Check - The Patent Office

Published

The Patent Office🇬🇧 - ASPA check for AS9011: the upstream transit providers AS9011 has authorized in its RPKI Autonomous System Provider Authorization (ASPA) object, and the networks that list AS9011 as their provider. Routers that validate ASPA use these records to detect route leaks in BGP paths.

ASPA Status
Published
Upstream Providers
3
Downstream Customers
0

How to read this ASPA check

The 3 providers below are the only networks allowed to appear directly above AS9011 in an AS-path. If AS9011 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

AS9011 peering topology: 3 upstream providers and 0 downstream customersUpstreams: AS2856, AS5089, AS13335. No downstreams.AS9011 - The Patent OfficeAS9011The Patent OfficeAS2856BT-UK-AS British Tele…AS2856 - BT-UK-AS British Telecommunications LimitedAS5089NTL Virgin Media Limi…AS5089 - NTL Virgin Media LimitedAS13335CLOUDFLARENET - Cloud…AS13335 - CLOUDFLARENET - Cloudflare, Inc.UPSTREAMSDOWNSTREAMS

Upstream Providers(3)

AS9011 authorizes these ASNs as upstream transit providers.

ASNName
AS2856🇬🇧BT-UK-AS British Telecommunications Limited
AS5089🇬🇧NTL Virgin Media Limited
AS13335🇺🇸CLOUDFLARENET - Cloudflare, Inc.

ASPA object expires: 2026-10-27

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