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Data as of Nov 7, 2026

212.4.136.0/26

No anonymizer space · no proxy exits in 30 days

O2 Czech Republic, a.s.

Announcement
212.4.128.0/19
RPKI valid
Announced by
AS12570
Type
Business
Risk
0 / 100 · Low

Residential-proxy exits

Proxy exits
2
3.1% of its addresses · listed by providers
Providers
5
selling exits here

Proxy providers listing exits

  • BottingTools
  • Decodo
  • FastProxy
  • Oxylabs
  • Thordata

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
212.4.128.0/198,192CZ-CZNET-20080611O2 Czech Republic, a.s. (ORG-STAN1-RIPE) · CZALLOCATED PAJun 11, 2008abuse@o2.cz
└ 212.4.136.0/2664XACTIXactiASSIGNED PAOct 25, 2012abuse@o2.cz
via CZ-CZNET-20080611

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

AnnouncementRouting historyRPKI & IRRWhois & abuse
Announced by

Covering announcement 212.4.128.0/19

Prefix
212.4.128.0/19
Announced by
AS12570 O2 Czech Republic, a.s.
Type
Residential
Proxy exits
87
Always-on exits
12
RPKI
RPKI valid
Netname
CZ-CZNET-20080611
Registrant
O2 Czech Republic, a.s.
RIR
RIPE NCC
Origin network

AS12570

CZ
Name
O2 Czech Republic, a.s.
Type
Internet provider
Registered
Jul 28, 1999
Domain
o2.cz
Website
www.itself.cz/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed