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Data as of Nov 4, 2026

178.17.102.0/24

No anonymizer space · no proxy exits in 30 days

O2 Czech Republic, a.s.

Announcement
178.17.96.0/20
RPKI valid
Announced by
AS16246
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
178.17.80.0 - 178.17.111.2558,192CZ-CZNET-20100318O2 Czech Republic, a.s. (ORG-STAN1-RIPE) · CZALLOCATED PAApr 1, 2025abuse@o2.cz
└ 178.17.102.0/24256NEJCZ_CATRunknownASSIGNED PAJan 12, 2021abuse@o2.cz
via CZ-CZNET-20100318

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 178.17.96.0/20

Prefix
178.17.96.0/20
Announced by
AS16246 O2 Czech Republic, a.s.
Type
Residential
RPKI
RPKI valid
Netname
CZ-CZNET-20100318
Registrant
O2 Czech Republic, a.s.
RIR
RIPE NCC
Origin network

AS16246

CZ
Name
O2 Czech Republic, a.s.
Type
Internet provider
Registered
Feb 7, 2001
Domain
o2.cz
Website
www.nej.cz
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed