103.37.136.0/21
🇨🇳CIDR
103.37.136.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Beijing
RIR
RIPE
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 103.37.136.0/21 | AS4808CHINA169-BJ - China Unicom Beijing Province Network | No ROA | — | 5/30/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 103.37.136.0/22 | 🇨🇳CN | allocated | |
| 103.37.140.0/22 | 🇨🇳CN | allocated |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/103.37.136.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/103.37.136.0/21" | jq
External Links