AS213512 ASPA Check - Lorenz Knak Lorenz Knak Trading IT Adjutor
PublishedLorenz-Knak Lorenz Knak trading as IT-adjutor GmbH🇩🇪 - ASPA check for AS213512: the upstream transit providers AS213512 has authorized in its RPKI Autonomous System Provider Authorization (ASPA) object, and the networks that list AS213512 as their provider. Routers that validate ASPA use these records to detect route leaks in BGP paths.
How to read this ASPA check
The 4 providers below are the only networks allowed to appear directly above AS213512 in an AS-path. If AS213512 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
Upstream Providers(4)
AS213512 authorizes these ASNs as upstream transit providers.
| ASN | Name |
|---|---|
| AS174 | 🇺🇸COGENT-174 - Cogent Communications, LLC |
| AS200462 | 🇩🇪AS-ETH Lennart Seitz trading as "ETH-Services" |
| AS213527 | 🇩🇪IT-adjutor Lorenz Knak trading as IT-adjutor GmbH |
| AS215120 | 🇦🇹Evolus-IX Evolus IT Solutions GmbH |
Downstream Customers(1)
These ASNs list AS213512 as an authorized upstream provider.
| ASN | Name |
|---|---|
| AS213579 | 🇩🇪Leon-Hubrich Leon Hubrich |
ASPA object expires: 2026-10-27
Related Tools and Guides
- How to run an ASPA check - read and verify an ASPA record step by step
- ASPA explained - how provider authorization stops route leaks
- ASPA Check tool - check the ASPA record of any other ASN
- RPKI & ROA Lookup - validate prefixes and check ASPA records for any ASN
- Global ASPA Adoption Statistics - transit-free ASNs, top upstream providers, adoption trends
- AS213512 Overview - prefixes, BGP routes, peers, and RPKI status