121.52.224.0/19
🇨🇳CIDR
121.52.224.0/19
IP Version
IPv4
Addresses
8.1K
Mask
/19 (255.255.224.0)
Country
🇨🇳 China
City
Hangzhou (Xihu Qu)
RIR
APNIC
Status
allocated
Allocated
11/7/2007
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.52.224.0/19 | AS4837CHINA169-Backbone - CHINA UNICOM China169 Backbone | Valid | APNICRADB | 6/13/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 121.52.224.0/19 | AS4837 | /19 | apnic |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 121.52.224.0/20 | 🇨🇳CN | assigned | |
| 121.52.240.0/21 | 🇨🇳CN | assigned |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/121.52.224.0/19Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.52.224.0/19" | jq
External Links