Data as of Nov 5, 2026
221.10.25.0/24
No anonymizer space · no proxy exits in 30 daysCHINA UNICOM China169 Backbone · space held by China Unicom SiChuan province network
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 221.10.0.0/16 since May 2005 | AS4837 | Residential | 91 7 always on | China Unicom SiChuan province network |
Network & registry
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
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Aug 2008
- Current origin since
- Aug 2008 · 18 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 221.10.25.0/24 | AS4837 | /24 | APNIC | RPKI valid |
| 221.10.0.0/16 | AS4837 | /16 | APNIC | Too specific |
Whois
Registration for this announcement
- Range
- 221.
10. 0. 0/ 16 - Netname
- UNICOM-SC
- Registrant
- China Unicom SiChuan province network
- Registrant country
- CN
- Organization
- China Unicom SiChuan 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 20, 2003
- Status
- assigned
Report abuse
Abuse contact
- hqs-ipabuse@
chinaunicom. cn - Name
- ABUSE CUCN
- Handle
- AC1718-AP