AS209771 ASPA Check - SYSN

Published

SYSN SYSN LTD🇬🇧 - ASPA check for AS209771: the upstream transit providers AS209771 has authorized in its RPKI Autonomous System Provider Authorization (ASPA) object, and the networks that list AS209771 as their provider. Routers that validate ASPA use these records to detect route leaks in BGP paths.

ASPA Status
Published
Upstream Providers
5
Downstream Customers
0

How to read this ASPA check

The 5 providers below are the only networks allowed to appear directly above AS209771 in an AS-path. If AS209771 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

AS209771 peering topology: 5 upstream providers and 0 downstream customersUpstreams: AS6939, AS11967, AS34549, AS41051, AS48646. No downstreams.AS209771 - SYSN SYSN LTDAS209771SYSN SYSN LTDAS6939HURRICANE - Hurricane…AS6939 - HURRICANE - Hurricane Electric LLCAS11967HOP179 Hop179 OUAS11967 - HOP179 Hop179 OUAS34549MEER-AS meerfarbig Gm…AS34549 - MEER-AS meerfarbig GmbH Co. KGAS41051FREETRANSIT Openfacto…AS41051 - FREETRANSIT Openfactory GmbHAS48646STEFAN6 SDRmedia Verw…AS48646 - STEFAN6 SDRmedia Verwaltungs GmbHUPSTREAMSDOWNSTREAMS

Upstream Providers(5)

AS209771 authorizes these ASNs as upstream transit providers.

ASNName
AS6939🇺🇸HURRICANE - Hurricane Electric LLC
AS11967🇪🇪HOP179 Hop179 OU
AS34549🇩🇪MEER-AS meerfarbig GmbH & Co. KG
AS41051🇨🇭FREETRANSIT Openfactory GmbH
AS48646🇩🇪STEFAN6 SDRmedia Verwaltungs GmbH

ASPA object expires: 2026-10-27

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