AS51918 Cerberus Networks Ltd
AS51918 is operated by Cerberus Networks Ltd and registered with RIPE NCC (GB) since 2010-11-29.
It announces 24 IPv4 and 2 IPv6 prefixes, 96% of them RPKI valid.
RIPE RIS sees 19 upstream and peer networks and 0 downstream networks next to it.
PeeringDB lists it as a Cable/DSL/ISP network at 4 internet exchanges and 2 facilities. Its peering policy is open.
| Name | Cerberus Networks Ltd |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | United Kingdom (GB) |
| Delegated on | 2010-11-29 |
| Network type | Cable/DSL/ISP, Regional |
| Peering policy | Open |
| IRR as-set | AS-CERBERUSNETWORKS |
| Prefixes (IPv4 / IPv6) | 24 / 2 |
| RPKI valid | 96% (25 / 26) |
| Upstreams and peers | 19 |
| Downstream networks | 0 |
| Website | cerberusnetworks.co.uk |
Routing health
- AS51918 announces 24 IPv4 and 2 IPv6 prefixes.
- 25 of 26 announced prefixes are RPKI valid.
- 1 announced prefixes are not covered by a ROA of AS51918 (they may have none, or another network’s).
- 19 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 26
- 46.37.32.0/19
- 46.37.32.0/22
- 46.37.36.0/22
- 46.37.40.0/22
- 46.37.44.0/22
- 46.37.48.0/22
- 46.37.52.0/22
- 46.37.56.0/22
- 46.37.60.0/22
- 77.73.170.0/23
- 77.73.172.0/24
- 83.151.224.0/19
- 83.151.224.0/22
- 83.151.228.0/22
- 83.151.232.0/22
- 83.151.236.0/22
- 83.151.240.0/22
- 83.151.244.0/22
- 83.151.248.0/22
- 83.151.252.0/22
- 92.119.254.0/24
- 185.14.208.0/22
- 185.117.236.0/22
- 195.10.232.0/24
- 2a01:5d00::/32
- 2a06:94c0::/29
Upstreams and peers 19
The networks RIPE RIS sees next to AS51918 in BGP paths, the most visible first.
Peering
Peering policy: Open. Suggested max-prefix limits: 50 IPv4, 10 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| Equinix London: Equinix IX - LD Metro | 1 | 2G | No |
| LINX LON1: Main | 2 | 11G | No |
| LINX LON2 | 1 | 1G | No |
| LONAP: LON0 | 2 | 2G | No |
| Facility | City | Country |
|---|---|---|
| Equinix LD8 - London, Docklands | London | GB |
| Telehouse - London (Docklands North) | London | GB |
More about AS51918
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-13 21:05 UTC. The country is where the AS number was registered, not necessarily where the network operates.