Data as of Nov 6, 2026
221.12.3.152/29
No anonymizer space · no proxy exits in 30 daysCHINA UNICOM China169 Backbone · space held by China Unicom Zhejiang province network
Network & registry
Announced by
Covering announcement 221.12.0.0/17
- Prefix
- 221.12.0.0/17
- Announced by
- AS4837 CHINA UNICOM China169 Backbone
- Type
- Residential
- Proxy exits
- 82
- Always-on exits
- 7
- RPKI
- RPKI valid
- Netname
- UNICOM-ZJ
- Registrant
- China Unicom Zhejiang province network
- RIR
- APNIC
Origin network
AS4837
CN
- Name
- CHINA UNICOM China169 Backbone
- Type
- Internet provider
- Registered
- Sep 17, 2001
- Domain
- chinaunicom.cn
- Website
- www.chinaunicom.cn/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 221.12.0.0/17
221.12.0.0/17
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 21 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 221.12.0.0/17 | AS4837 | /17 | APNIC | RPKI valid |
Whois
Registration for this announcement
- Range
- 221.
12. 0. 0 - 221. 12. 191. 255 - Netname
- UNICOM-ZJ
- Registrant
- China Unicom Zhejiang province network
- Registrant country
- CN
- Organization
- China Unicom Zhejiang province network
- Org country
- CN
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Jan 22, 2025
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- CN
- Delegated
- Jan 28, 2003
- Status
- assigned
Report abuse
Abuse contact
- hqs-ipabuse@
chinaunicom. cn - Name
- ABUSE CUCN
- Handle
- AC1718-AP