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	Prefix	Description
	79.98.76.0/24	Sys-DataCom s.r.o.
	79.98.72.0/24	Sys-datacom, s.r.o.
	79.98.72.0/21	Sys-DataCom s.r.o.
	79.98.73.0/24	Clients TTC
	79.98.74.0/24	Sys-DataCom s.r.o.
	79.98.75.0/24	Sys-DataCom s.r.o.
	79.98.77.0/24	network DATA-CONNECT
	79.98.78.0/24	Sys-DataCom s.r.o.
	79.98.79.0/24	Clients TTC 8-2012/11-2013
	185.4.200.0/24	Clients TTC 11-2013/6-2014
	185.4.200.0/22	Sys-DataCom s.r.o.
	185.4.202.0/24	network DATA-CONNECT
	185.4.203.0/24	Sys-DataCom s.r.o.
	2a02:970::/32	Sys-DataCom s.r.o.
	2a02:970:1017::/48	IPv6 customers Praha Lipence trznice
	2a02:970:1019::/48	IPv6 home users Cernosice
	2a02:970:1028::/48	IPv6 end users POP Lety Osbet
	2a02:970:1052::/48	IPv6 end users Cernosice POP Kosina
	2a02:970:1061::/48	IPv6 end users Cernosice POP Vraz Ptacnikova
	2a02:970:1068::/48	IPv6 end users Prague POP Chodov Haspa
	2a02:970:1078::/48	Sys-DataCom s.r.o.
	2a02:970:1159::/48	Sys-DataCom s.r.o.
	2a02:970:1176::/48	Sys-DataCom s.r.o.
	2a02:970:1179::/48	Sys-DataCom s.r.o.
	2a02:970:1192::/48	Sys-DataCom s.r.o.
	2a02:970:1208::/48	Sys-DataCom s.r.o.
	2a02:970:1243::/48	Sys-DataCom s.r.o.
	2a02:970:1245::/48	Sys-DataCom s.r.o.
	2a02:970:1248::/48	Sys-DataCom s.r.o.
	2a02:970:1288::/48	Sys-DataCom s.r.o.
	2a02:970:1353::/48	Sys-DataCom s.r.o.
	2a02:970:1365::/48	Sys-DataCom s.r.o.
	2a02:970:1366::/48	Sys-DataCom s.r.o.
	2a02:970:1384::/48	Sys-DataCom s.r.o.
	2a02:970:1397::/48	Sys-DataCom s.r.o.
	2a02:970:1399::/48	Sys-DataCom s.r.o.
	2a02:970:1405::/48	Sys-DataCom s.r.o.
	2a02:970:1406::/48	Sys-DataCom s.r.o.
	2a02:970:1446::/48	Sys-DataCom s.r.o.
	2a02:970:1447::/48	Sys-DataCom s.r.o.
	2a02:970:1448::/48	Sys-DataCom s.r.o.
	2a02:970:1531::/48	Sys-DataCom s.r.o.
	2a02:970:1532::/48	Sys-DataCom s.r.o.
	2a02:970:1533::/48	Sys-DataCom s.r.o.
	2a02:970:1724::/48	Sys-DataCom s.r.o.
	2a02:970:3280::/48	Sys-DataCom s.r.o.

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS47232	ISP Alliance a.s.	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS6939	Hurricane Electric LLC	✔	✔
	AS47232	ISP Alliance a.s.	✔	✔
	AS5405	Inter.link GmbH	✔	✔
	AS20562	Open Peering (Broadband Hosting B.V.)	✔	✔
	AS6204	INTERKVM HOST SRL	✔	✔
	AS50629	LWLcom GmbH	✔	✔
	AS24940	Hetzner Online GmbH	✔	✔
	AS9136	WOBCOM GmbH	✔	✔
	AS14840	BR.DIGITAL	✔	✔
	AS60068	Datacamp Limited (CDN77 / DataPacket)	✔	✔
	AS49544	i3D.net B.V	✔	✔
	AS22356	Durand do Brasil Ltda	✔	✔
	AS1764	Next Layer Telecommunications	✔	✔
	AS216265	ARISTO NETWORKS LTD	✔	✘
	AS200249	Products Up GmbH	✔	✔
	AS8881	1&1 Versatel GmbH	✔	✔
	AS8801	Rocket Fibre Ltd	✔	✔
	AS24482	SG.GS	✔	✔
	AS32590	Valve Corporation	✔	✔
	AS51184	Fonira Telekom GmbH	✔	✔
	AS8447	A1 Telekom Austria AG	✔	✔
	AS34170	Aztelekom LLC	✔	✔
	AS8529	Zain Omantel International FZ-LLC	✔	✔
	AS47927	WIFIWEB s.r.l.	✘	✔
	AS35297	Dataline LLC	✔	✔
	AS44066	firstcolo GmbH	✔	✔
	AS56382	vServer.site LTD	✔	✔
	AS8767	M-net Telekommunikations GmbH	✔	✔
	AS215120	Evolus IT Solutions GmbH	✔	✔
	AS34779	T-2, d.o.o.	✔	✔
	AS6663	Türk Telekom International	✔	✔
	AS41327	Fiber Telecom S.p.A.	✔	✔
	AS7713	PT Telkom Indonesia Tbk	✔	✘
	AS1820	WNET TELECOM USA Corp.	✔	✔
	AS263444	Open X Tecnologia Ltda	✔	✔
	AS49121	Infinity Telecom, s.r.o.	✔	✘
	AS60345	icixs networks GmbH	✔	✘
	AS21013	eww ag	✔	✘
	AS57344	Telehouse EAD	✔	✘
	AS21430	WIA spol. s.r.o.	✔	✘
	AS53062	ALT | GRUPO BRASIL TECPAR	✔	✘
	AS9498	Bharti Airtel Ltd.	✔	✘
	AS42184	TKRZ Stadtwerke GmbH	✔	✘
	AS264409	Huge Networks	✔	✘
	AS3212	Telemach Slovenija d.o.o.	✔	✘
	AS16097	HL komm Telekommunikations GmbH	✔	✘
	AS29049	Delta Telecom Ltd	✔	✘
	AS10099	China Unicom Global	✔	✘
	AS5578	SWAN, a.s.	✔	✘
	AS30058	FDCservers.net	✔	✘
	AS24953	NETPLANET GmbH	✔	✘
	AS9009	M247 Europe SRL	✔	✘

aut-num:        AS44002
as-name:        SYS-DATACOM
descr:          Czech Republic
org:            ORG-Ss84-RIPE
import:         from AS9148 accept ANY
import:         from AS25248 accept ANY
export:         to AS9148 announce AS44002
export:         to AS25248 announce AS44002
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
notify:         radek.majer@gmail.com
mnt-by:         MNT-SYSDATACOM
created:        2007-11-01T13:56:13Z
last-modified:  2018-09-04T10:28:02Z
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-SS84-RIPE
org-name:       Sys-DataCom s.r.o.
country:        CZ
org-type:       LIR
address:        Dummy address for ORG-SS84-RIPE
# Email removed, Log into bgp.tools to see whois emails
abuse-c:        AR13501-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        MNT-SYSDATACOM
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-SYSDATACOM
created:        2007-10-17T13:19:24Z
last-modified:  2021-09-28T09:33:23Z
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: 2026-04-04T03:23:50Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RIPE	as-grapesc-cz	55
RIPE	as-ispalliance-nix	241
RIPE	as-ispalliance-peeringcz	242
RADB	as-hurricanev6	20741
RIPE	as-ispalliance-cz	234
RIPE	as-peeringcz-rs	86189
RIPE	as1299:as-twelve99-eu-v6	94714
RIPE	as-supernetwork	738
RIPE	as-transcz	798
RIPE	as1299:as-twelve99-eu-v4	94842
RIPE	as-sysdatacom-cz	1