37.203.40.0/21
🇬🇧CIDR
37.203.40.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇬🇧 United Kingdom
RIR
RIPENCC
Status
allocated
Allocated
3/23/2012
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 37.203.40.0/21 | AS44332ASN-CENTRILOGIC-UK Centrilogic Ltd | No ROA | RADB | 5/31/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 37.203.44.0/23 | AS33459EVAULT-AS - Open Text Corporation | No ROA | — | 5/31/2026 |
| 37.203.40.0/24 | AS44332ASN-CENTRILOGIC-UK Centrilogic Ltd | No ROA | — | 5/31/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 37.203.44.0/23 | AS33459 | 🇳🇱NL | assigned |
| 37.203.41.0/24 | 🇬🇧GB | assigned | |
| 37.203.43.0/24 | 🇬🇧GB | assigned | |
| 37.203.40.0/24 | AS44332 | 🇬🇧GB | assigned |
| 37.203.42.0/24 | 🇬🇧GB | assigned |
Geolocation
Country🇬🇧United KingdomGB
Coordinates55.3781, -3.4360 ↗
Abuse Contact
API
Open https://api.ipctl.io/v1/prefix/37.203.40.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/37.203.40.0/21" | jq
External Links