133.74.0.0/17
🇯🇵CIDR
133.74.0.0/17
IP Version
IPv4
Addresses
32.7K
Mask
/17 (255.255.128.0)
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 |
|---|---|---|---|---|
| 133.74.0.0/17 | AS3488JAXAnet - Japan Aerospace Exploration Agency | No ROA | RADB | 5/30/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 133.74.0.0/16 | AS2907SINET-AS - Research Organization of Information and Systems, National Institute of Informatics | No ROA | — | 5/30/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS3488 | RADB | MAINT-AS3488 | 11/13/2023 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/133.74.0.0/17Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/133.74.0.0/17" | jq
External Links