122.251.0.0/16
🇯🇵CIDR
122.251.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇯🇵 Japan
City
Chiyoda
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 122.251.0.0/16 | AS18077C-able - Yamaguchi Cable Vision Co.,Ltd | Valid | — | 6/1/2026 |
Covering Prefix
24 less-specific announcementsRPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 122.250.0.0/15 | AS18077 | /32 | apnic |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/122.251.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/122.251.0.0/16" | jq
External Links