133.19.0.0/16
🇯🇵CIDR
133.19.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇯🇵 Japan
City
Kyoto (Tōjiin Kitamachi)
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 133.19.0.0/16 | AS23807RITSUMEI - Ritsumeikan University | No ROA | — | 5/31/2026 |
Origin ASN
AS23807
RITSUMEI - Ritsumeikan University
Geolocation
API
Open https://api.ipctl.io/v1/prefix/133.19.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/133.19.0.0/16" | jq
External Links