133.37.0.0/16
🇯🇵IPv4APNICannouncedAS2907SINET-AS - Research Organization of Information and Systems, National Institute of Informatics RPKI Valid
CIDR
133.37.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
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 |
|---|---|---|---|---|
| 133.37.0.0/16 | AS2907SINET-AS - Research Organization of Information and Systems, National Institute of Informatics | Valid | — | 6/13/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 133.37.0.0/16 | AS2907 | /16 | apnic |
Origin ASN
AS2907
SINET-AS - Research Organization of Information and Systems, National Institute of Informatics
Geolocation
API
Open https://api.ipctl.io/v1/prefix/133.37.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/133.37.0.0/16" | jq
External Links