121.204.128.0/18
🇨🇳CIDR
121.204.128.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇨🇳 China
City
Wenquan
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.204.128.0/18 | AS133774CHINATELECOM-FUJIAN-FUZHOU-IDC1 - Fuzhou | Valid | RADB | 6/13/2026 |
Covering Prefix
7 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.204.0.0/14 | AS4134CHINANET-BACKBONE - No.31,Jin-rong Street | No ROA | — | 6/13/2026 |
| 121.204.128.0/19 | AS133774CHINATELECOM-FUJIAN-FUZHOU-IDC1 - Fuzhou | Valid | — | 6/13/2026 |
| 121.204.176.0/20 | AS133774CHINATELECOM-FUJIAN-FUZHOU-IDC1 - Fuzhou | Valid | — | 6/13/2026 |
| 121.204.160.0/21 | AS133774CHINATELECOM-FUJIAN-FUZHOU-IDC1 - Fuzhou | Valid | — | 6/13/2026 |
| 121.204.168.0/22 | AS133774CHINATELECOM-FUJIAN-FUZHOU-IDC1 - Fuzhou | Valid | — | 6/13/2026 |
| 121.204.172.0/23 | AS133774CHINATELECOM-FUJIAN-FUZHOU-IDC1 - Fuzhou | Valid | — | 6/13/2026 |
| 121.204.182.0/24 | AS133774CHINATELECOM-FUJIAN-FUZHOU-IDC1 - Fuzhou | Valid | — | 6/13/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 121.204.128.0/18 | AS133774 | /18 | apnic |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS133774 | RADB | MAINT-AS133774 | 11/13/2023 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 121.204.128.0/19 | AS133774 | 🇨🇳CN | assigned |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/121.204.128.0/18Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.204.128.0/18" | jq
External Links