210.51.20.0/22
🇨🇳CIDR
210.51.20.0/22
IP Version
IPv4
Addresses
1K
Mask
/22 (255.255.252.0)
Country
🇨🇳 China
City
Jinrongjie (Xicheng District)
RIR
APNIC
Status
assigned
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 210.51.20.0/22 | AS138421CU-CN-AS - China Unicom | No ROA | APNIC | 5/31/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 210.51.0.0/16 | AS9929CUII - CHINA UNICOM Industrial Internet Backbone | No ROA | — | 5/31/2026 |
| 210.51.21.0/24 | AS9929CUII - CHINA UNICOM Industrial Internet Backbone | No ROA | — | 5/31/2026 |
| 210.51.22.0/24 | AS9929CUII - CHINA UNICOM Industrial Internet Backbone | No ROA | — | 5/31/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 210.51.22.128/27 | 🇨🇳CN | assigned | |
| 210.51.22.96/27 | 🇨🇳CN | assigned | |
| 210.51.22.160/27 | 🇨🇳CN | assigned | |
| 210.51.20.0/27 | 🇨🇳CN | assigned | |
| 210.51.20.96/27 | 🇨🇳CN | assigned | |
| 210.51.20.192/27 | 🇨🇳CN | assigned | |
| 210.51.22.32/27 | 🇨🇳CN | assigned | |
| 210.51.22.64/27 | 🇨🇳CN | assigned | |
| 210.51.22.192/27 | 🇨🇳CN | assigned | |
| 210.51.22.224/27 | 🇨🇳CN | assigned | |
| 210.51.20.32/27 | 🇨🇳CN | assigned | |
| 210.51.20.64/27 | 🇨🇳CN | assigned | |
| 210.51.20.128/27 | 🇨🇳CN | assigned | |
| 210.51.20.160/27 | 🇨🇳CN | assigned | |
| 210.51.20.224/27 | 🇨🇳CN | assigned | |
| 210.51.22.0/28 | 🇨🇳CN | assigned | |
| 210.51.22.16/28 | 🇨🇳CN | assigned |
Origin ASN
AS138421
CU-CN-AS - China Unicom
Geolocation
Country🇨🇳ChinaCN
RegionBeijing
CityJinrongjie (Xicheng District)
Coordinates39.9099, 116.3590 ↗
API
Open https://api.ipctl.io/v1/prefix/210.51.20.0/22Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/210.51.20.0/22" | jq
External Links