AS61337 Single Mode Networks Ltd
AS61337 is operated by Single Mode Networks Ltd and registered with RIPE NCC (GB) since 2012-11-19.
It announces 12 IPv4 and 1 IPv6 prefixes, 76% of them RPKI valid.
RIPE RIS sees 43 upstream and peer networks and 11 downstream networks next to it.
PeeringDB lists it as an NSP network at 2 internet exchanges and 7 facilities. Its peering policy is selective.
| Name | Single Mode Networks Ltd |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | United Kingdom (GB) |
| Delegated on | 2012-11-19 |
| Network type | NSP, Global |
| Peering policy | Selective |
| IRR as-set | AS-GXT |
| Prefixes (IPv4 / IPv6) | 12 / 1 |
| RPKI valid | 76% (10 / 13) |
| Upstreams and peers | 43 |
| Downstream networks | 11 |
| Website | singlemode.co.uk |
Routing health
- AS61337 announces 12 IPv4 and 1 IPv6 prefixes.
- 10 of 13 announced prefixes are RPKI valid.
- 3 announced prefixes are not covered by a ROA of AS61337 (they may have none, or another network’s).
- 43 upstreams and peers, 11 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 13
- 45.153.132.0/23
- 45.153.134.0/24
- 83.150.249.0/24
- 83.150.250.0/23
- 85.199.212.0/22
- 91.230.243.0/24
- 193.26.23.0/24
- 194.55.0.0/24
- 194.55.40.0/24
- 194.55.43.0/24
- 194.60.198.0/23
- 195.66.148.0/23
- 2001:67c:504::/48
Upstreams and peers 43
The networks RIPE RIS sees next to AS61337 in BGP paths, the most visible first.
Peering
Peering policy: Selective. Suggested max-prefix limits: 100 IPv4, 10 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| LINX LON1: Main | 1 | 100G | Yes |
| LINX LON2 | 1 | 10G | Yes |
| Facility | City | Country |
|---|---|---|
| Creslow Park | Aylesbury | GB |
| Digital Realty Dublin DUB1-2 | Dublin | IE |
| Digital Realty Madrid MAD1-2 | Madrid | ES |
| nLighten Milton Keynes LTN1 | Milton Keynes | GB |
| Pulsant Milton Keynes SE-1 | Milton Keynes | GB |
| Telehouse - London (Docklands East) | London | GB |
| Telehouse - London (Docklands North) | London | GB |
More about AS61337
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-14 16:02 UTC. The country is where the AS number was registered, not necessarily where the network operates.