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Data as of Nov 7, 2026

185.51.30.0/24

No anonymizer space · no proxy exits in 30 days

Core4Net, s.r.o.

Announcement
185.51.28.0/22
RPKI valid
Announced by
AS197307
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
185.51.28.0/221,024CZ-CORE4NET-20140320Core4Net, s.r.o. (ORG-CS455-RIPE) · CZALLOCATED PAMar 20, 2014abuse@core4net.cz
└ 185.51.30.0/24256BNET-RESERVEDBNET Business, s.r.o. / Reserved rangeASSIGNED PAMay 23, 2026abuse@core4net.cz
via CZ-CORE4NET-20140320

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 185.51.28.0/22

Prefix
185.51.28.0/22
Announced by
AS197307 Core4Net, s.r.o.
Type
Residential
RPKI
RPKI valid
Netname
CZ-CORE4NET-20140320
Registrant
Core4Net, s.r.o.
RIR
RIPE NCC
Origin network

AS197307

CZ
Name
Core4Net, s.r.o.
Type
Internet provider
Registered
Oct 11, 2010
Domain
bnet-internet.cz
Website
bnet-internet.cz/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed