AS12519 Fastnet
AS12519 is operated by Fastnet and registered with RIPE NCC (GB) since 1999-06-29.
It announces 4 IPv4 and 1 IPv6 prefixes, 100% of them RPKI valid.
RIPE RIS sees 15 upstream and peer networks and 1 downstream networks next to it.
PeeringDB lists it as an NSP network at 3 internet exchanges and 3 facilities. Its peering policy is open.
| Name | Fastnet |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | United Kingdom (GB) |
| Delegated on | 1999-06-29 |
| Network type | NSP, Regional |
| Peering policy | Open |
| IRR as-set | AS-FASTNET |
| Prefixes (IPv4 / IPv6) | 4 / 1 |
| RPKI valid | 100% (5 / 5) |
| Upstreams and peers | 15 |
| Downstream networks | 1 |
| Website | fastnet.co.uk |
Routing health
- AS12519 announces 4 IPv4 and 1 IPv6 prefixes.
- All 5 announced prefixes are RPKI valid.
- 15 upstreams and peers, 1 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 5
- 81.31.64.0/20
- 82.148.32.0/19
- 87.252.32.0/19
- 212.42.160.0/19
- 2a02:13a0::/32
Upstreams and peers 15
The networks RIPE RIS sees next to AS12519 in BGP paths, the most visible first.
Peering
Peering policy: Open. Suggested max-prefix limits: 50 IPv4, 1 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| LINX LON1: Main | 1 | 10G | Yes |
| LINX LON2 | 1 | 10G | Yes |
| LONAP: LON0 | 2 | 20G | Yes |
| Facility | City | Country |
|---|---|---|
| Fastnet Brighton Datacentre | Brighton | GB |
| Telehouse - London (Docklands East) | London | GB |
| Telehouse - London (Docklands North) | London | GB |
More about AS12519
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-14 12:35 UTC. The country is where the AS number was registered, not necessarily where the network operates.