121.10.208.0/21
🇨🇳CIDR
121.10.208.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Guangzhou
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.10.208.0/21 | AS140308CHINATELECOM-GUANGDONG-ZHUHAI-5G-NETWORK - CHINATELECOM Guangdong province Zhuhai 5G network | No ROA | RADB | 5/31/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.8.0.0/13 | AS4134CHINANET-BACKBONE - No.31,Jin-rong Street | No ROA | — | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS140308 | RADB | MAINT-AS4813 | 3/16/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 121.10.215.192/27 | 🇨🇳CN | assigned | |
| 121.10.214.160/28 | 🇨🇳CN | assigned | |
| 121.10.214.80/28 | 🇨🇳CN | assigned | |
| 121.10.214.72/29 | 🇨🇳CN | assigned | |
| 121.10.214.136/29 | 🇨🇳CN | assigned | |
| 121.10.215.160/29 | 🇨🇳CN | assigned | |
| 121.10.214.96/29 | 🇨🇳CN | assigned | |
| 121.10.214.112/29 | 🇨🇳CN | assigned | |
| 121.10.214.120/29 | 🇨🇳CN | assigned | |
| 121.10.214.176/29 | 🇨🇳CN | assigned | |
| 121.10.215.64/29 | 🇨🇳CN | assigned | |
| 121.10.215.152/29 | 🇨🇳CN | assigned | |
| 121.10.215.168/29 | 🇨🇳CN | assigned | |
| 121.10.215.176/29 | 🇨🇳CN | assigned | |
| 121.10.215.224/29 | 🇨🇳CN | assigned | |
| 121.10.215.240/29 | 🇨🇳CN | assigned | |
| 121.10.215.248/29 | 🇨🇳CN | assigned | |
| 121.10.214.144/29 | 🇨🇳CN | assigned | |
| 121.10.214.128/29 | 🇨🇳CN | assigned | |
| 121.10.214.212/30 | 🇨🇳CN | assigned | |
| 121.10.214.220/30 | 🇨🇳CN | assigned | |
| 121.10.214.228/30 | 🇨🇳CN | assigned | |
| 121.10.215.232/30 | 🇨🇳CN | assigned | |
| 121.10.215.132/30 | 🇨🇳CN | assigned | |
| 121.10.214.188/30 | 🇨🇳CN | assigned | |
| 121.10.214.224/30 | 🇨🇳CN | assigned | |
| 121.10.215.0/30 | 🇨🇳CN | assigned | |
| 121.10.215.236/30 | 🇨🇳CN | assigned | |
| 121.10.214.204/30 | 🇨🇳CN | assigned | |
| 121.10.214.216/30 | 🇨🇳CN | assigned | |
| 121.10.214.104/30 | 🇨🇳CN | assigned | |
| 121.10.214.152/30 | 🇨🇳CN | assigned | |
| 121.10.214.192/30 | 🇨🇳CN | assigned | |
| 121.10.215.4/30 | 🇨🇳CN | assigned | |
| 121.10.214.184/30 | 🇨🇳CN | assigned | |
| 121.10.214.196/30 | 🇨🇳CN | assigned | |
| 121.10.214.200/30 | 🇨🇳CN | assigned |
Origin ASN
AS140308
CHINATELECOM-GUANGDONG-ZHUHAI-5G-NETWORK - CHINATELECOM Guangdong province Zhuhai 5G network
Geolocation
API
Open https://api.ipctl.io/v1/prefix/121.10.208.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.10.208.0/21" | jq
External Links