Data as of Nov 10, 2026
221.
- Proxy activity
- Not seen in 30 days
- Type
- Residential
- Risk
- 0 / 100 · Low
- Announced by
- AS17638ASN for TIANJIN Provincial Net of CTInternet provider
- Announcement
- 221.239.0.0/18RPKI valid
- Company
- Chinanet Tianjin Province Network · cndata.com
- Location
- Tianjin, China
Network & registry
Announced by
Announcement
- Prefix
- 221.239.0.0/18
- Announced by
- AS17638 ASN for TIANJIN Provincial Net of CT
- Type
- Residential
- Proxy exits
- 18
- Always-on exits
- 1
- RPKI
- RPKI valid
Origin network
AS17638
CN
- Name
- ASN for TIANJIN Provincial Net of CT
- Type
- Internet provider
- Registered
- Nov 18, 2002
- Domain
- cndata.com
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 221.239.0.0/18
221.239.0.0/18
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 221.239.0.0/18 | AS17638 | /18 | APNIC | RPKI valid |
IRR
Route objects on 221.239.0.0/18
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS17638 | RADB | ASN for TIANJIN Provincial Net of CT | MAINT-CT-GNOC | Nov 13, 2023 |
Whois
Registration for this address
- Range
- 221.
238. 0. 0 - 221. 239. 127. 255 - Netname
- CHINANET-TJ
- Registrant
- Chinanet Tianjin Province Network
- Registrant country
- CN
- Organization
- Chinanet Tianjin Province Network
- Org country
- CN
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Jun 15, 2021
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- CN
- Delegated
- Sep 30, 2003
- Status
- assigned
Report abuse
Abuse contact
- anti-spam@
chinatelecom. cn - Name
- ABUSE CHINANETCN
- Handle
- AC1573-AP