Data as of Nov 7, 2026
80.251.244.0/24
17 residential-proxy exits · 30 daysO2 Czech Republic, a.s.
Residential-proxy exits
Proxy exits
17
6.6% of its addresses · 30 days
Always-on exits
2
12% of its exits
Providers
46
selling exits here
Oct 8, 2026 – Nov 6, 2026
Exits seen per day
10K observations
Proxy providers listing exits
- 2Captcha
- 711Proxy
- AnyIP
- BirdProxies
- BottingTools
- ByteProxies
- Byteful
- CliProxy
- DataImpulse
- Decodo
- EnigmaProxy
- Evomi
- FastProxy
- FlashProxy
- FloppyData
- GSocks
- Geonix
- Geonode
- GoProxies
- GonzoProxy
- HydraProxy
- IPOasis
- Infatica
- LemonBright
- LemonLabs
- LightningProxies
- MangoProxy
- NodeMaven
- NodeProxy
- NovaProxy
- Oxylabs
- Proxy-Seller
- ProxyEmpire
- ProxyHat
- ProxyWing
- Proxyma
- RainProxy
- Shifter
- Smartproxy
- StrikeProxy
- Thordata
- VibeProxies
- VitalData
- VitalExclusive
- VitalProxy
- Webshare
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 80.251.240.0/20 | 4,096 | CZ-CZNET-20051121 | O2 Czech Republic, a.s. (ORG-STAN1-RIPE) · CZ | ALLOCATED PA | Apr 1, 2025 | abuse@ |
| └ 80.251.240.0/21 | 2,048 | CZ-NORDICTELECOMREGIONAL-20051121 | unknown | ASSIGNED PA | Feb 13, 2006 | abuse@ via CZ-CZNET-20051121 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Announced by
Covering announcement 80.251.240.0/20
- Prefix
- 80.251.240.0/20
- Announced by
- AS42908 O2 Czech Republic, a.s.
- Type
- Residential
- Proxy exits
- 29
- Always-on exits
- 4
- RPKI
- RPKI valid
- Netname
- CZ-CZNET-20051121
- Registrant
- O2 Czech Republic, a.s.
- RIR
- RIPE NCC
Origin network
AS42908
CZ
- Name
- O2 Czech Republic, a.s.
- Type
- Internet provider
- Registered
- May 9, 2007
- Domain
- nordictelecom.cz
- Website
- www.nordictelecom.cz/
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 80.251.240.0/20
80.251.240.0/20
Routing history
- Pattern
- Rotating
- First seen
- Feb 2006
- Current origin since
- Dec 2024 · 1.9 yr
- Origin networks
- 2
- Last change of origin
- Dec 2024
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 80.251.240.0/20 | AS42908 | /20 | RIPE | RPKI valid |
IRR
Route objects on 80.251.240.0/20
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS42908 | RIPE | MNT-NORDICTELECOM AS5610-MTN | Apr 1, 2025 |
Whois
Registration for this announcement
- Range
- 80.
251. 240. 0/ 20 - Netname
- CZ-CZNET-20051121
- Registrant
- O2 Czech Republic, a.s.
- Registrant country
- CZ
- Organization
- O2 Czech Republic, a.s. (ORG-STAN1-RIPE)
- Org country
- CZ
- Type
- ALLOCATED PA
- Created
- Apr 1, 2025
- Updated
- Apr 1, 2025
- Maintainer
- AS5610-MTN
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- Nov 21, 2005
- Status
- assigned
Report abuse
Abuse contact
- abuse@
o2. cz - Name
- Abuse-C Role
- Handle
- AR14410-RIPE