157.203.254.0/23
🇬🇧CIDR
157.203.254.0/23
IP Version
IPv4
Addresses
512
Mask
/23 (255.255.254.0)
Country
🇬🇧 United Kingdom
City
Swindon
RIR
RIPENCC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 157.203.254.0/23 | AS21369SEMA-UK-AS Atos IT Services UK Ltd | Valid | RIPE | 6/1/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 157.203.254.0/24 | AS21369SEMA-UK-AS Atos IT Services UK Ltd | Valid | — | 6/1/2026 |
| 157.203.255.0/24 | AS21369SEMA-UK-AS Atos IT Services UK Ltd | Valid | — | 6/1/2026 |
Geolocation
Abuse Contact
API
Open https://api.ipctl.io/v1/prefix/157.203.254.0/23Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/157.203.254.0/23" | jq
External Links