203.163.123.192/28
🇯🇵IPv4APNICassignedNo ROA
CIDR
203.163.123.192/28
IP Version
IPv4
Addresses
16
Mask
/28 (255.255.255.240)
Country
🇯🇵 Japan
City
Minato
RIR
APNIC
Status
assigned
Allocated
-
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not currently announced in BGP. See covering prefix below. | ||||
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.163.64.0/18 | AS2687ATGS-MMD-AS - AT&T Enterprises, LLC | No ROA | — | 6/1/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/203.163.123.192/28Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/203.163.123.192/28" | jq
External Links