203.216.128.0/20
🇯🇵CIDR
203.216.128.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇯🇵 Japan
City
Chiyoda City
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.216.128.0/20 | AS4694IDCF - IDC Frontier Inc. | Valid | RADB | 6/1/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.216.128.0/19 | AS4694IDCF - IDC Frontier Inc. | Valid | — | 6/1/2026 |
Origin ASN
AS4694
IDCF - IDC Frontier Inc.
Geolocation
API
Open https://api.ipctl.io/v1/prefix/203.216.128.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/203.216.128.0/20" | jq
External Links