AS21320 ASPA Check - GEANT IAS VRF GEANT Vereniging

Published

GEANT_IAS_VRF GEANT Vereniging🇳🇱 - ASPA check for AS21320: the upstream transit providers AS21320 has authorized in its RPKI Autonomous System Provider Authorization (ASPA) object, and the networks that list AS21320 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
6

How to read this ASPA check

The 3 providers below are the only networks allowed to appear directly above AS21320 in an AS-path. If AS21320 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

AS21320 peering topology: 3 upstream providers and 6 downstream customersUpstreams: AS174, AS2603, AS3356. Downstreams: AS559, AS680, AS1213, AS2602, AS2852, AS5408.AS21320 - GEANT_IAS_VRF GEANT VerenigingAS21320GEANT_IAS_VRF GEANT V…AS174COGENT-174 - Cogent C…AS174 - COGENT-174 - Cogent Communications, LLCAS2603NORDUNET NORDUnetAS2603 - NORDUNET NORDUnetAS3356LEVEL3 - Level 3 Pare…AS3356 - LEVEL3 - Level 3 Parent, LLCAS559Switch SWITCHAS559 - Switch SWITCHAS680DFN Verein zur Foerde…AS680 - DFN Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.AS1213Asiera ASIERA TECHNOL…AS1213 - Asiera ASIERA TECHNOLOGY SERVICES CLGAS2602RESTENA Fondation RES…AS2602 - RESTENA Fondation RESTENAAS2852CESNET2 CESNET z.s.p.…AS2852 - CESNET2 CESNET z.s.p.o.AS5408GR-NET National Infra…AS5408 - GR-NET National Infrastructures for Research and Technology S.A.UPSTREAMSDOWNSTREAMS

Upstream Providers(3)

AS21320 authorizes these ASNs as upstream transit providers.

ASNName
AS174🇺🇸COGENT-174 - Cogent Communications, LLC
AS2603🇩🇰NORDUNET NORDUnet
AS3356🇺🇸LEVEL3 - Level 3 Parent, LLC

Downstream Customers(6)

These ASNs list AS21320 as an authorized upstream provider.

ASNName
AS559🇨🇭Switch SWITCH
AS680🇩🇪DFN Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.
AS1213🇮🇪Asiera ASIERA TECHNOLOGY SERVICES CLG
AS2602🇱🇺RESTENA Fondation RESTENA
AS2852🇨🇿CESNET2 CESNET z.s.p.o.
AS5408🇬🇷GR-NET National Infrastructures for Research and Technology S.A.

ASPA object expires: 2026-10-27

Related Tools and Guides

← Back to AS21320