203.181.248.0/23
🇯🇵CIDR
203.181.248.0/23
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 |
|---|---|---|---|---|
| 203.181.248.0/23 | AS7660APAN-JP - Asia Pacific Advanced Network - Japan | Valid | — | 6/1/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.181.192.0/18 | AS2907SINET-AS - Research Organization of Information and Systems, National Institute of Informatics | No ROA | — | 6/1/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 203.181.248.0/23 | AS7660 | /32 | apnic |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/203.181.248.0/23Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/203.181.248.0/23" | jq
External Links