221.3.0.0/17 - CHINA UNICOM China169 Backbone (AS4837)
CIDR
221.3.0.0/17
IP Version
IPv4
Addresses
32.7K
Mask
/17 (255.255.128.0)
Country
🇨🇳 China
City
Jinan
RIR
APNIC
Status
allocated
Allocated
2002-12-24
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 221.3.0.0/17 | AS4837 CHINA169-Backbone - CHINA UNICOM China169 Backbone | Valid | APNICOther IRR | 2026-10-13 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 221.3.0.0/17 | AS4837 | /17 | apnic |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 221.3.1.8/32 | 🇨🇳CN | assigned | |
| 221.3.1.20/32 | 🇨🇳CN | assigned | |
| 221.3.1.39/32 | 🇨🇳CN | assigned | |
| 221.3.1.40/32 | 🇨🇳CN | assigned | |
| 221.3.1.67/32 | 🇨🇳CN | assigned | |
| 221.3.1.68/32 | 🇨🇳CN | assigned | |
| 221.3.1.73/32 | 🇨🇳CN | assigned | |
| 221.3.1.75/32 | 🇨🇳CN | assigned | |
| 221.3.1.92/32 | 🇨🇳CN | assigned | |
| 221.3.1.93/32 | 🇨🇳CN | assigned | |
| 221.3.1.94/32 | 🇨🇳CN | assigned | |
| 221.3.1.98/32 | 🇨🇳CN | assigned | |
| 221.3.1.105/32 | 🇨🇳CN | assigned | |
| 221.3.1.106/32 | 🇨🇳CN | assigned | |
| 221.3.1.107/32 | 🇨🇳CN | assigned | |
| 221.3.1.110/32 | 🇨🇳CN | assigned | |
| 221.3.1.112/32 | 🇨🇳CN | assigned | |
| 221.3.1.122/32 | 🇨🇳CN | assigned | |
| 221.3.1.127/32 | 🇨🇳CN | assigned | |
| 221.3.1.132/32 | 🇨🇳CN | assigned | |
| 221.3.1.134/32 | 🇨🇳CN | assigned | |
| 221.3.1.160/27 | 🇨🇳CN | assigned | |
| 221.3.2.67/32 | 🇨🇳CN | assigned | |
| 221.3.2.121/32 | 🇨🇳CN | assigned | |
| 221.3.3.90/32 | 🇨🇳CN | assigned | |
| 221.3.3.92/32 | 🇨🇳CN | assigned | |
| 221.3.3.116/32 | 🇨🇳CN | assigned | |
| 221.3.3.142/32 | 🇨🇳CN | assigned | |
| 221.3.3.143/32 | 🇨🇳CN | assigned | |
| 221.3.3.148/32 | 🇨🇳CN | assigned | |
| 221.3.3.150/32 | 🇨🇳CN | assigned | |
| 221.3.3.153/32 | 🇨🇳CN | assigned | |
| 221.3.3.158/32 | 🇨🇳CN | assigned | |
| 221.3.3.175/32 | 🇨🇳CN | assigned | |
| 221.3.3.180/32 | 🇨🇳CN | assigned | |
| 221.3.7.48/30 | 🇨🇳CN | assigned | |
| 221.3.7.64/26 | 🇨🇳CN | assigned | |
| 221.3.8.12/30 | 🇨🇳CN | assigned | |
| 221.3.8.32/29 | 🇨🇳CN | assigned | |
| 221.3.8.40/30 | 🇨🇳CN | assigned | |
| 221.3.8.44/30 | 🇨🇳CN | assigned | |
| 221.3.8.100/30 | 🇨🇳CN | assigned | |
| 221.3.8.104/30 | 🇨🇳CN | assigned | |
| 221.3.8.108/30 | 🇨🇳CN | assigned | |
| 221.3.8.112/29 | 🇨🇳CN | assigned | |
| 221.3.8.196/30 | 🇨🇳CN | assigned | |
| 221.3.8.200/29 | 🇨🇳CN | assigned | |
| 221.3.8.212/30 | 🇨🇳CN | assigned | |
| 221.3.8.216/30 | 🇨🇳CN | assigned | |
| 221.3.8.220/30 | 🇨🇳CN | assigned | |
| 221.3.8.240/30 | 🇨🇳CN | assigned | |
| 221.3.8.244/30 | 🇨🇳CN | assigned | |
| 221.3.9.64/29 | 🇨🇳CN | assigned | |
| 221.3.9.80/29 | 🇨🇳CN | assigned | |
| 221.3.9.88/29 | 🇨🇳CN | assigned | |
| 221.3.9.100/30 | 🇨🇳CN | assigned | |
| 221.3.9.108/30 | 🇨🇳CN | assigned | |
| 221.3.9.188/30 | 🇨🇳CN | assigned | |
| 221.3.9.200/29 | 🇨🇳CN | assigned | |
| 221.3.9.208/28 | 🇨🇳CN | assigned | |
| 221.3.9.224/29 | 🇨🇳CN | assigned | |
| 221.3.9.232/29 | 🇨🇳CN | assigned | |
| 221.3.9.240/28 | 🇨🇳CN | assigned | |
| 221.3.10.32/29 | 🇨🇳CN | assigned | |
| 221.3.10.56/30 | 🇨🇳CN | assigned | |
| 221.3.10.60/30 | 🇨🇳CN | assigned | |
| 221.3.10.80/29 | 🇨🇳CN | assigned | |
| 221.3.10.128/30 | 🇨🇳CN | assigned | |
| 221.3.10.132/30 | 🇨🇳CN | assigned | |
| 221.3.11.32/30 | 🇨🇳CN | assigned | |
| 221.3.11.36/30 | 🇨🇳CN | assigned | |
| 221.3.11.40/30 | 🇨🇳CN | assigned | |
| 221.3.11.64/27 | 🇨🇳CN | assigned | |
| 221.3.11.96/31 | 🇨🇳CN | assigned | |
| 221.3.12.0/28 | 🇨🇳CN | assigned | |
| 221.3.12.16/29 | 🇨🇳CN | assigned | |
| 221.3.12.28/30 | 🇨🇳CN | assigned | |
| 221.3.12.32/30 | 🇨🇳CN | assigned | |
| 221.3.12.96/29 | 🇨🇳CN | assigned | |
| 221.3.12.104/30 | 🇨🇳CN | assigned | |
| 221.3.12.112/30 | 🇨🇳CN | assigned | |
| 221.3.12.120/29 | 🇨🇳CN | assigned | |
| 221.3.12.128/27 | 🇨🇳CN | assigned | |
| 221.3.12.160/29 | 🇨🇳CN | assigned | |
| 221.3.12.192/28 | 🇨🇳CN | assigned | |
| 221.3.13.40/29 | 🇨🇳CN | assigned | |
| 221.3.13.56/29 | 🇨🇳CN | assigned | |
| 221.3.13.64/29 | 🇨🇳CN | assigned | |
| 221.3.13.72/29 | 🇨🇳CN | assigned | |
| 221.3.13.92/30 | 🇨🇳CN | assigned | |
| 221.3.20.16/28 | 🇨🇳CN | assigned | |
| 221.3.20.48/29 | 🇨🇳CN | assigned | |
| 221.3.20.56/29 | 🇨🇳CN | assigned | |
| 221.3.20.64/29 | 🇨🇳CN | assigned | |
| 221.3.20.76/30 | 🇨🇳CN | assigned | |
| 221.3.20.88/30 | 🇨🇳CN | assigned | |
| 221.3.20.112/29 | 🇨🇳CN | assigned | |
| 221.3.20.120/30 | 🇨🇳CN | assigned | |
| 221.3.20.128/25 | 🇨🇳CN | assigned | |
| 221.3.83.0/24 | 🇨🇳CN | assigned |
Related Prefixes
More prefixes of AS4837
All prefixes of AS4837 →Geolocation
Learn more
- RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
- RPKI validatorCheck ROA coverage for any prefix or ASN
- What is BGP?How prefixes are announced and routed
- More-specific prefixesGlossary: covering and more-specific routes
- IPv4 transfers in the APNIC regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/221.3.0.0/17Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/221.3.0.0/17" | jq
External Links