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Data as of Nov 3, 2026

78.136.128.0/22

No anonymizer space · no proxy exits in 30 days

O2 Czech Republic, a.s.

Announcement
78.136.128.0/18
RPKI valid
Announced by
AS42908
Type
Residential
Risk
0 / 100 · Low

Registrations in this block

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

RangeAddressesNetnameHolderTypeCreatedAbuse contact
78.136.128.0/1816,384CZ-CZNET-20070509O2 Czech Republic, a.s. (ORG-STAN1-RIPE) · CZALLOCATED PAApr 1, 2025[email protected]
└ 78.136.128.0/221,024CZ-NORDICTELECOMREGIONAL-20070509unknownASSIGNED PAJun 24, 2010[email protected]
via CZ-CZNET-20070509

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 78.136.128.0/18

Prefix
78.136.128.0/18
Announced by
AS42908 O2 Czech Republic, a.s.
Type
Residential
RPKI
RPKI valid
Netname
CZ-CZNET-20070509
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