133.24.248.0/23
🇯🇵CIDR
133.24.248.0/23
IP Version
IPv4
Addresses
512
Mask
/23 (255.255.254.0)
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 |
|---|---|---|---|---|
| 133.24.248.0/23 | AS131159AS-YAMAGATAU - Yamagata University | Valid | — | 5/31/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 133.24.0.0/16 | AS131159AS-YAMAGATAU - Yamagata University | Valid | — | 5/31/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 133.24.0.0/16 | AS131159 | /24 | apnic |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/133.24.248.0/23Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/133.24.248.0/23" | jq
External Links