210.51.40.0/24
🇨🇳CIDR
210.51.40.0/24
IP Version
IPv4
Addresses
256
Mask
/24 (255.255.255.0)
Country
🇨🇳 China
City
Beijing
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 210.51.40.0/24 | AS138421CU-CN-AS - China Unicom | No ROA | APNIC | 5/31/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 210.51.0.0/16 | AS9929CUII - CHINA UNICOM Industrial Internet Backbone | No ROA | — | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS138421 | APNIC | MAINT-CNCGROUP-RR | 6/8/2023 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 210.51.40.160/27 | 🇨🇳CN | assigned | |
| 210.51.40.64/27 | 🇨🇳CN | assigned | |
| 210.51.40.96/27 | 🇨🇳CN | assigned | |
| 210.51.40.32/27 | 🇨🇳CN | assigned | |
| 210.51.40.192/27 | 🇨🇳CN | assigned | |
| 210.51.40.224/27 | 🇨🇳CN | assigned | |
| 210.51.40.144/28 | 🇨🇳CN | assigned | |
| 210.51.40.16/28 | 🇨🇳CN | assigned | |
| 210.51.40.0/28 | 🇨🇳CN | assigned | |
| 210.51.40.128/28 | 🇨🇳CN | assigned |
Origin ASN
AS138421
CU-CN-AS - China Unicom
Geolocation
API
Open https://api.ipctl.io/v1/prefix/210.51.40.0/24Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/210.51.40.0/24" | jq
External Links