51.52.0.0/16
🇬🇧CIDR
51.52.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇬🇧 United Kingdom
City
London
RIR
RIPENCC
Status
assigned
Allocated
9/1/1993
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 51.52.0.0/16 | AS31655ASN-GammaTelecom Gamma Telecom Holdings Ltd | No ROA | RIPE | 5/31/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 51.52.50.0/24 | AS31655ASN-GammaTelecom Gamma Telecom Holdings Ltd | No ROA | — | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS31655 | RIPE | MNT-GTHL | 5/23/2016 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 51.52.32.0/20 | 🇬🇧GB | assigned | |
| 51.52.192.0/21 | 🇬🇧GB | assigned | |
| 51.52.112.0/21 | 🇬🇧GB | assigned | |
| 51.52.224.0/21 | 🇬🇧GB | assigned | |
| 51.52.168.0/22 | 🇬🇧GB | assigned | |
| 51.52.104.0/22 | 🇬🇧GB | assigned | |
| 51.52.0.0/22 | 🇬🇧GB | assigned | |
| 51.52.232.0/22 | 🇬🇧GB | assigned | |
| 51.52.236.0/23 | 🇬🇧GB | assigned | |
| 51.52.180.0/23 | 🇬🇧GB | assigned | |
| 51.52.128.0/23 | 🇬🇧GB | assigned | |
| 51.52.21.0/24 | 🇬🇧GB | assigned | |
| 51.52.160.0/24 | 🇬🇧GB | assigned |
Geolocation
Abuse Contact
API
Open https://api.ipctl.io/v1/prefix/51.52.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/51.52.0.0/16" | jq
External Links