131.206.0.0/16
🇯🇵CIDR
131.206.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇯🇵 Japan
City
Chiyoda
RIR
APNIC
Status
allocated
Allocated
1/12/1989
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 131.206.0.0/16 | AS2907SINET-AS - Research Organization of Information and Systems, National Institute of Informatics | No ROA | — | 5/30/2026 |
Origin ASN
AS2907
SINET-AS - Research Organization of Information and Systems, National Institute of Informatics
Geolocation
API
Open https://api.ipctl.io/v1/prefix/131.206.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/131.206.0.0/16" | jq
External Links