LAYER3 INTEL
Get started
Sign in
Data as of Nov 7, 2026

212.4.148.0/23

2 residential-proxy exits · 30 days

O2 Czech Republic, a.s.

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

Residential-proxy exits

Proxy exits
2
0.39% of its addresses · 30 days
Spread
1 of 2
/24s with at least one exit
Providers
21
selling exits here
Oct 8, 2026 – Nov 6, 2026

Exits seen per day

168 observations

Proxy providers listing exits

  • 2Captcha
  • BirdProxies
  • ByteProxies
  • Byteful
  • EnigmaProxy
  • FlashProxy
  • GonzoProxy
  • Infatica
  • MangoProxy
  • NodeProxy
  • NovaProxy
  • Proxiware
  • Proxy-Seller
  • ProxyEmpire
  • Proxyma
  • RainProxy
  • Shifter
  • Thordata
  • VantageProxies
  • VitalExclusive
  • VitalProxy

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
└ 212.4.148.0/23512SELFNET-CZSelf Servis CATV KyjovASSIGNED PAJun 12, 2009abuse@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