121.52.160.0/19
🇨🇳CIDR
121.52.160.0/19
IP Version
IPv4
Addresses
8.1K
Mask
/19 (255.255.224.0)
Country
🇨🇳 China
City
Haidian (Haidian Qu)
RIR
APNIC
Status
allocated
Allocated
11/1/2007
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.52.160.0/19 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 6/13/2026 |
Covering Prefix
4 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.52.176.0/20 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 6/13/2026 |
| 121.52.176.0/20 | AS133111CNT-northChina - CERNET New Technology Co., Ltd | No ROA | — | 6/13/2026 |
| 121.52.160.0/24 | AS4538ERX-CERNET-BKB - China Education and Research Network Center | No ROA | — | 6/13/2026 |
| 121.52.160.0/24 | AS133111CNT-northChina - CERNET New Technology Co., Ltd | No ROA | — | 6/13/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS38587 | RADB | MAINT-AS4637 | 11/13/2023 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/121.52.160.0/19Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.52.160.0/19" | jq
External Links