121.251.232.0/24
🇨🇳IPv4APNICannouncedAS138371CNGI-QDA-IX-AS-AP - CERNET2 regional IX at Ocean University of ChinaNo ROA
CIDR
121.251.232.0/24
IP Version
IPv4
Addresses
256
Mask
/24 (255.255.255.0)
Country
🇨🇳 China
City
Nanjing
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.251.232.0/24 | AS138371CNGI-QDA-IX-AS-AP - CERNET2 regional IX at Ocean University of China | No ROA | — | 5/31/2026 |
Covering Prefix
4 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.248.0.0/14 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
| 121.250.0.0/15 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
| 121.251.224.0/20 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 5/31/2026 |
| 121.251.224.0/20 | AS138371CNGI-QDA-IX-AS-AP - CERNET2 regional IX at Ocean University of China | No ROA | — | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS4538 | RADB | MAINT-AS4637 | 11/13/2023 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/121.251.232.0/24Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.251.232.0/24" | jq
External Links