121.58.104.0/21
🇨🇳CIDR
121.58.104.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Haikou
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.58.104.0/21 | AS151058CT-HAINAN - China Telecom | No ROA | — | 6/13/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.58.0.0/17 | AS4134CHINANET-BACKBONE - No.31,Jin-rong Street | No ROA | — | 6/13/2026 |
| 121.58.64.0/18 | AS151058CT-HAINAN - China Telecom | No ROA | — | 6/13/2026 |
| 121.58.96.0/19 | AS4809CHINATELECOM-CORE-WAN-CN2 - China Telecom Next Generation Carrier Network | No ROA | — | 6/13/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 121.58.104.0/25 | 🇨🇳CN | assigned | |
| 121.58.104.128/25 | 🇨🇳CN | assigned | |
| 121.58.105.0/26 | 🇨🇳CN | assigned |
Origin ASN
AS151058
CT-HAINAN - China Telecom
Geolocation
API
Open https://api.ipctl.io/v1/prefix/121.58.104.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.58.104.0/21" | jq
External Links