150.55.128.0/21
🇯🇵CIDR
150.55.128.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇯🇵 Japan
City
Nagoya (Osu)
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 150.55.128.0/21 | AS18124OUS-NET - Okayama University of Science | No ROA | — | 5/31/2026 |
Covering Prefix
5 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 150.55.0.0/16 | AS18124OUS-NET - Okayama University of Science | No ROA | — | 5/31/2026 |
| 150.55.128.0/17 | AS18124OUS-NET - Okayama University of Science | No ROA | — | 5/31/2026 |
| 150.55.128.0/18 | AS18124OUS-NET - Okayama University of Science | No ROA | — | 5/31/2026 |
| 150.55.128.0/22 | AS18124OUS-NET - Okayama University of Science | No ROA | — | 5/31/2026 |
| 150.55.132.0/22 | AS18124OUS-NET - Okayama University of Science | No ROA | — | 5/31/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/150.55.128.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/150.55.128.0/21" | jq
External Links