212.21.100.0/24
🇬🇧IPv4RIPENCCallocatedNo ROA
CIDR
212.21.100.0/24
IP Version
IPv4
Addresses
256
Mask
/24 (255.255.255.0)
Country
🇬🇧 United Kingdom
City
London
RIR
RIPENCC
Status
allocated
Allocated
9/7/1999
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not currently announced in BGP. See covering prefix below. | ||||
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 212.21.100.0/23 | AS205434Elasticity BE SLOUGH DC UK LIMITED | No ROA | — | 6/1/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS34984 | RIPE | ipv4center-mnt | 5/29/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/212.21.100.0/24Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/212.21.100.0/24" | jq
External Links