AS5517 CSL CSL Computer Service Langenbach GmbH
AS5517 is operated by CSL CSL Computer Service Langenbach GmbH and registered with RIPE NCC (DE) since 1996-01-16.
It announces 3 IPv4 and 1 IPv6 prefixes.
RIPE RIS sees 2 upstream and peer networks and 0 downstream networks next to it.
| Name | CSL CSL Computer Service Langenbach GmbH |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | Germany (DE) |
| Delegated on | 1996-01-16 |
| Prefixes (IPv4 / IPv6) | 3 / 1 |
| Upstreams and peers | 2 |
| Downstream networks | 0 |
Routing health
- Partial result: RIPEstat did not return the roas in time.
- AS5517 announces 3 IPv4 and 1 IPv6 prefixes.
- 2 upstreams and peers, 0 downstream networks seen.
For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.
Announced prefixes 4
- 159.25.0.0/16
- 194.176.0.0/19
- 194.245.0.0/16
- 2a01:4fc0::/34
Upstreams and peers 2
The networks RIPE RIS sees next to AS5517 in BGP paths, the most visible first.
More about AS5517
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-14 07:20 UTC. The country is where the AS number was registered, not necessarily where the network operates.