137.221.16.0/21
🇬🇧CIDR
137.221.16.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇬🇧 United Kingdom
City
Bletchley
RIR
RIPENCC
Status
allocated
Allocated
1/10/1990
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 137.221.16.0/21 | AS49765Comms365 Comms365 Limited | Valid | RIPE | 6/13/2026 |
Covering Prefix
8 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 137.221.16.0/24 | AS49765Comms365 Comms365 Limited | Valid | — | 6/13/2026 |
| 137.221.17.0/24 | AS49765Comms365 Comms365 Limited | Valid | — | 6/13/2026 |
| 137.221.18.0/24 | AS49765Comms365 Comms365 Limited | Valid | — | 6/13/2026 |
| 137.221.19.0/24 | AS49765Comms365 Comms365 Limited | Valid | — | 6/13/2026 |
| 137.221.20.0/24 | AS49765Comms365 Comms365 Limited | Valid | — | 6/13/2026 |
| 137.221.21.0/24 | AS49765Comms365 Comms365 Limited | Valid | — | 6/13/2026 |
| 137.221.22.0/24 | AS49765Comms365 Comms365 Limited | Valid | — | 6/13/2026 |
| 137.221.23.0/24 | AS49765Comms365 Comms365 Limited | Valid | — | 6/13/2026 |
Origin ASN
AS49765
Comms365 Comms365 Limited
Geolocation
Abuse Contact
API
Open https://api.ipctl.io/v1/prefix/137.221.16.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/137.221.16.0/21" | jq
External Links