AS12732 ASPA Check - GUTCON NET GutCon
PublishedGUTCON-NET GutCon GmbH🇩🇪 - ASPA check for AS12732: the upstream transit providers AS12732 has authorized in its RPKI Autonomous System Provider Authorization (ASPA) object, and the networks that list AS12732 as their provider. Routers that validate ASPA use these records to detect route leaks in BGP paths.
How to read this ASPA check
The 8 providers below are the only networks allowed to appear directly above AS12732 in an AS-path. If AS12732 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(8)
AS12732 authorizes these ASNs as upstream transit providers.
| ASN | Name |
|---|---|
| AS174 | 🇺🇸COGENT-174 - Cogent Communications, LLC |
| AS286 | 🇺🇸KPN GTT Communications Inc. |
| AS3356 | 🇺🇸LEVEL3 - Level 3 Parent, LLC |
| AS5405 | 🇩🇪INTERDOTLINK Inter.link GmbH |
| AS6939 | 🇺🇸HURRICANE - Hurricane Electric LLC |
| AS8220 | 🇬🇧COLT COLT Technology Services Group Limited |
| AS20676 | 🇩🇪PLUSNET Plusnet GmbH |
| AS30742 | 🇩🇪BRITELINE-AS Bremen Briteline GmbH |
Downstream Customers(1)
These ASNs list AS12732 as an authorized upstream provider.
| ASN | Name |
|---|---|
| AS44716 | 🇩🇪DHOSTING-NET D-hosting die Rackspace & Connectivity GmbH |
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
- AS12732 Overview - prefixes, BGP routes, peers, and RPKI status