133.105.0.0/16
🇯🇵CIDR
133.105.0.0/16
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 |
|---|---|---|---|---|
| 133.105.0.0/16 | AS17944JWA - Japan Weather Association | No ROA | — | 5/31/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 133.105.0.0/17 | AS17944JWA - Japan Weather Association | No ROA | — | 5/31/2026 |
| 133.105.128.0/17 | AS17944JWA - Japan Weather Association | No ROA | — | 5/31/2026 |
| 133.105.160.0/23 | AS17944JWA - Japan Weather Association | No ROA | — | 5/31/2026 |
Origin ASN
AS17944
JWA - Japan Weather Association
Geolocation
API
Open https://api.ipctl.io/v1/prefix/133.105.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/133.105.0.0/16" | jq
External Links