131.112.0.0/15
🇯🇵IPv4RIPEassignedNo ROA
CIDR
131.112.0.0/15
IP Version
IPv4
Addresses
131K
Mask
/15 (255.254.0.0)
Country
🇯🇵 Japan
City
Chiyoda City
RIR
RIPE
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
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 131.112.0.0/16 | AS9367ISCT - Institute of Science Tokyo | No ROA | — | 6/13/2026 |
| 131.113.0.0/16 | AS38635KEIO-NET - Keio University | No ROA | — | 6/13/2026 |
| 131.112.254.0/24 | AS9367ISCT - Institute of Science Tokyo | No ROA | — | 6/13/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 131.112.0.0/16 | AS9367 | 🇯🇵JP | allocated |
| 131.113.0.0/16 | AS38635 | 🇯🇵JP | allocated |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/131.112.0.0/15Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/131.112.0.0/15" | jq
External Links