121.52.208.0/20
🇨🇳IPv4APNICallocatedMOASNo ROA
CIDR
121.52.208.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇨🇳 China
City
Beijing
RIR
APNIC
Status
allocated
Allocated
11/7/2007
Announced BGP Routes
2 of 2 routesMOAS - 2 origin ASNs
RPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.52.208.0/20 | AS4808CHINA169-BJ - China Unicom Beijing Province Network | No ROA | — | 5/31/2026 |
| 121.52.208.0/20 | AS4847CNIX-AP - China Networks Inter-Exchange | No ROA | RADB | 5/31/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.52.222.0/23 | AS24404CNISP-UNION - CNISP-Union Technology (Beijing) Co., Ltd | No ROA | — | 5/31/2026 |
| 121.52.211.0/24 | AS4847CNIX-AP - China Networks Inter-Exchange | No ROA | — | 5/31/2026 |
| 121.52.221.0/24 | AS4847CNIX-AP - China Networks Inter-Exchange | No ROA | — | 5/31/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 121.52.208.0/21 | 🇨🇳CN | assigned | |
| 121.52.216.0/21 | 🇨🇳CN | assigned |
Origin ASNs (2)
AS4808MOAS
CHINA169-BJ - China Unicom Beijing Province Network
AS4847MOAS
CNIX-AP - China Networks Inter-Exchange
Geolocation
API
Open https://api.ipctl.io/v1/prefix/121.52.208.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.52.208.0/20" | jq
External Links