Data as of Nov 3, 2026
Autonomous system
AS29321
O2 Czech Republic, a.s.
Announces 15,360 addresses in 5 prefixes. None of it is anonymizer space.
Type
Internet provider
CZ
Proxy activity, 30 days
16 exits
Announced prefixes
| Prefix | Type | Proxy exits | RPKI |
|---|---|---|---|
| 80.243.96.0/20 since Jun 2009 | Residential | 1 | |
| 94.143.168.0/21 since Dec 2008 | Residential | 3 | |
| 109.239.64.0/20 since Feb 2010 | Residential | 4 1 always on | |
| 194.59.240.0/22 since Jun 2018 | Residential | ||
| 217.195.160.0/20 since May 2005 | Residential | 8 |
Residential-proxy exposure
Always-on exits
1
6.3% of its exits
Spread
12
/24s with at least one exit
Providers
36
selling exits here
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 109.239.72.0/24 | 1 | 1 | |
| 94.143.169.0/24 | 0 | 2 | |
| 217.195.161.0/24 | 0 | 2 | |
| 217.195.167.0/24 | 0 | 2 | |
| 217.195.168.0/24 | 0 | 2 | |
| 80.243.111.0/24 | 0 | 1 | |
| 94.143.174.0/24 | 0 | 1 | |
| 109.239.75.0/24 | 0 | 1 | |
| 109.239.76.0/24 | 0 | 1 | |
| 109.239.79.0/24 | 0 | 1 | |
| 217.195.169.0/24 | 0 | 1 | |
| 217.195.175.0/24 | 0 | 1 |
Proxy providers listing exits
- 2Captcha
- AnyIP
- BartProxies
- BirdProxies
- BottingTools
- ByteProxies
- Byteful
- CliProxy
- EnigmaProxy
- FastProxy
- FlashProxy
- GSocks
- Geonix
- GonzoProxy
- HydraProxy
- IPOasis
- Infatica
- LemonBright
- LightningProxies
- MangoProxy
- NodeMaven
- NodeProxy
- NovaProxy
- Oxylabs
- Proxiware
- Proxy-Seller
- ProxyEmpire
- Proxyma
- RainProxy
- Shifter
- Thordata
- VantageProxies
- VibeProxies
- VitalData
- VitalExclusive
- VitalProxy
Proxy activity
Oct 4, 2026 – Nov 2, 2026
AS29321, day by day
3.6K observations
- Residential
- Business
Network & history
Profile
- Registered
- Jul 31, 2003
- Domain
- o2.cz
- Website
- www.centronet.cz/
- Industry
- Internet Service Provider (ISP)
The space it routes itself
Address share by type
Routing patterns
How its announcements have moved
Arrivals