AS219251 ASPA Check - Walther Tomasz Walter

Published

Walther Tomasz Walter🇵🇱 - ASPA check for AS219251: the upstream transit providers AS219251 has authorized in its RPKI Autonomous System Provider Authorization (ASPA) object, and the networks that list AS219251 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 AS219251 in an AS-path. If AS219251 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

AS219251 peering topology: 5 upstream providers and 0 downstream customersUpstreams: AS41051, AS209533, AS209735, AS212895, AS214762. No downstreams.AS219251 - Walther Tomasz WalterAS219251Walther Tomasz WalterAS41051FREETRANSIT Openfacto…AS41051 - FREETRANSIT Openfactory GmbHAS209533BGPTunnel iFog GmbHAS209533 - BGPTunnel iFog GmbHAS209735LAGRANGE Lagrange Clo…AS209735 - LAGRANGE Lagrange Cloud Technologies LimitedAS212895ROUTE64_ORG Johannes …AS212895 - ROUTE64_ORG Johannes ErnstAS214762MATHOST Sebastian Ste…AS214762 - MATHOST Sebastian Stefanek trading as MatHost.euUPSTREAMSDOWNSTREAMS

Upstream Providers(5)

AS219251 authorizes these ASNs as upstream transit providers.

ASNName
AS41051🇨🇭FREETRANSIT Openfactory GmbH
AS209533🇨🇭BGPTunnel iFog GmbH
AS209735🇬🇧LAGRANGE Lagrange Cloud Technologies Limited
AS212895🇩🇪ROUTE64_ORG Johannes Ernst
AS214762🇵🇱MATHOST Sebastian Stefanek trading as MatHost.eu

ASPA object expires: 2026-10-27

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