212.21.100.0/23
🇬🇧CIDR
212.21.100.0/23
IP Version
IPv4
Addresses
512
Mask
/23 (255.255.254.0)
Country
🇬🇧 United Kingdom
City
London
RIR
RIPENCC
Status
allocated
Allocated
9/7/1999
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 212.21.100.0/23 | AS205434Elasticity BE SLOUGH DC UK LIMITED | No ROA | — | 6/1/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 212.21.101.0/24 | AS205434Elasticity BE SLOUGH DC UK LIMITED | No ROA | — | 6/1/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 212.21.100.0/24 | 🇹🇷TR | allocated | |
| 212.21.101.0/24 | AS205434 | 🇬🇧GB | allocated |
Geolocation
Abuse Contact
API
Open https://api.ipctl.io/v1/prefix/212.21.100.0/23Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/212.21.100.0/23" | jq
External Links