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	Prefix	Description
	79.142.144.0/20	Core4Net, s.r.o.
	185.51.28.0/22	Core4Net, s.r.o.
	185.180.1.0/24	Clients behind the NAT
	2a02:24c0::/32	Core4Net, s.r.o.

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS39392	SH.cz s.r.o.	✔	✔
	AS16019	Vodafone Czech Republic a.s.	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS39392	SH.cz s.r.o.	✔	✔
	AS6939	Hurricane Electric LLC	✔	✔
	AS16019	Vodafone Czech Republic a.s.	✔	✔
	AS5405	Inter.link GmbH	✔	✔
	AS8218	Zayo Europe	✔	✔
	AS6204	INTERKVM HOST SRL	✔	✔
	AS24940	Hetzner Online GmbH	✔	✔
	AS20562	Open Peering (Broadband Hosting B.V.)	✔	✔
	AS9136	WOBCOM GmbH	✔	✔
	AS216265	ARISTO NETWORKS LTD	✔	✘
	AS14840	BR.DIGITAL	✔	✔
	AS49544	i3D.net B.V	✔	✔
	AS1764	Next Layer Telecommunications	✔	✔
	AS22356	Durand do Brasil Ltda	✔	✘
	AS200249	Products Up GmbH	✔	✔
	AS8881	1&1 Versatel GmbH	✔	✔
	AS8529	Zain Omantel International FZ-LLC	✔	✔
	AS60068	Datacamp Limited (CDN77 / DataPacket)	✔	✔
	AS4455	IX Reach Ltd	✔	✘
	AS8801	Rocket Fibre Ltd	✔	✔
	AS8447	A1 Telekom Austria AG	✔	✔
	AS51184	Fonira Telekom GmbH	✔	✔
	AS40994	Alwyzon (Hohl IT)	✔	✔
	AS50698	TETA s.r.o.	✔	✔
	AS32590	Valve Corporation	✔	✔
	AS49121	Infinity Telecom, s.r.o.	✔	✔
	AS34170	Aztelekom LLC	✔	✔
	AS199524	Gcore S.A.	✔	✔
	AS60345	icixs networks GmbH	✔	✘
	AS53062	ALT | GRUPO BRASIL TECPAR	✔	✘
	AS21430	WIA spol. s.r.o.	✔	✘
	AS57344	Telehouse EAD	✔	✘
	AS21013	eww ag	✔	✘
	AS2852	CESNET z.s.p.o.	✔	✘
	AS56382	vServer.site LTD	✔	✔
	AS34779	T-2, d.o.o.	✔	✔
	AS44066	firstcolo GmbH	✔	✔
	AS215120	Evolus IT Solutions GmbH	✔	✔
	AS8767	M-net Telekommunikations GmbH	✔	✔
	AS42473	Anexia Cloud Solutions GmbH	✔	✔
	AS24482	SG.GS	✔	✔
	AS36236	NetActuate, Inc	✔	✔
	AS15169	Google LLC	✔	✘
	AS6663	Türk Telekom International	✔	✘
	AS3212	Telemach Slovenija d.o.o.	✔	✘
	AS29049	Delta Telecom Ltd	✔	✘
	AS264409	Huge Networks	✔	✘
	AS16097	HL komm Telekommunikations GmbH	✔	✘
	AS47927	WIFIWEB s.r.l.	✘	✔
	AS37721	Virtual Technologies & Solutions	✘	✔
	AS263444	Open X Tecnologia Ltda	✘	✔

aut-num:        AS197307
as-name:        bnet-internet_cz
org:            ORG-CS455-RIPE
import:         from AS16019 accept ANY
import:         from AS6881 accept ANY
import:         from AS47200 accept ANY
import:         from AS112 accept ANY
import:         from AS39392 accept ANY
import:         from AS61195 accept ANY
import:         from AS32934 accept ANY
import:         from AS714 accept ANY
import:         from AS51331 accept ANY
export:         to AS16019 announce AS197307
export:         to AS6881 announce AS197307
export:         to AS47200 announce AS197307
export:         to AS112 announce AS197307
export:         to AS39392 announce AS197307
export:         to AS61195 announce AS197307
export:         to AS32934 announce AS197307
export:         to AS714 announce AS197307
export:         to AS51331 announce AS197307
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         cz-core4net-1-mnt
created:        2010-10-11T13:16:03Z
last-modified:  2024-06-12T08:48:59Z
source:         RIPE
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************


organisation:   ORG-CS455-RIPE
org-name:       Core4Net, s.r.o.
country:        CZ
org-type:       LIR
address:        Dummy address for ORG-CS455-RIPE
# Email removed, Log into bgp.tools to see whois emails
abuse-c:        AR38476-RIPE
mnt-ref:        cz-core4net-1-mnt
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         cz-core4net-1-mnt
created:        2016-11-28T16:16:35Z
last-modified:  2020-12-16T13:28:22Z
source:         RIPE
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************

Last Update: 2026-03-11T03:24:03Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RIPE	as47200:as-nixcz-rsclients	88458
RIPE	as-supernetwork	732
RIPE	as-bnet-internet	1
RIPE	as-gtscz-cust	137
RIPE	as-vodafone-cz-b2b	259
RIPE	as6881:as-nixcz-clients	83902
RIPE	as8508:as-sask-upc-in	506
RIPE	as-2connect-nix	17
RIPE	as-nixcz-rsclients	89747
RIPE	as-peeringcz-rs	85797
RIPE	as-2connect-fenix	17