Data as of Nov 7, 2026

185.51.28.0/22

No anonymizer space · no proxy exits in 30 days

Core4Net, s.r.o.

Announcement

this exact prefix

RPKI valid

Announced by

Type

Residential

Risk

0 / 100 · Low

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
185.51.28.0/22	1,024	CZ-CORE4NET-20140320	Core4Net, s.r.o. (ORG-CS455-RIPE) · CZ	ALLOCATED PA	Mar 20, 2014	abuse@core4net.cz
└ 185.51.28.0/24	256	BNET-RESERVED	BNET Business, s.r.o. / Reserved range	ASSIGNED PA	May 23, 2026	abuse@core4net.cz via CZ-CORE4NET-20140320
└ 185.51.29.0/24	256	BNET-RESERVED	BNET Business, s.r.o. / Reserved range	ASSIGNED PA	May 23, 2026	abuse@core4net.cz via CZ-CORE4NET-20140320
└ 185.51.30.0/24	256	BNET-RESERVED	BNET Business, s.r.o. / Reserved range	ASSIGNED PA	May 23, 2026	abuse@core4net.cz via CZ-CORE4NET-20140320
└ 185.51.31.0/24	256	BNET-RESERVED	BNET Business, s.r.o. / Reserved range	ASSIGNED PA	May 23, 2026	abuse@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.

Origin network

RPKI

ROA prefix	ASN	Max len	Anchor	Verdict
185.51.28.0/22	AS197307	/24	RIPE	RPKI valid

IRR

Origin	Registry	Description	Maintainer	Modified
AS197307	RIPE	BNET Business, s.r.o. / Secondary IPv4 route	CZ-BNET-BUSINESS-1-MNT	May 22, 2026