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	Prefix	Description
	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.
	79.98.76.0/24	Bajecny.net Clients
	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
	185.4.200.0/22	Sys-DataCom s.r.o.
	185.4.203.0/24	Sys-DataCom s.r.o.
	2a02:970::/32	Sys-DataCom s.r.o.
	2a02:970:1005::/48	IPv6 end users Prague POP Psohlavcu
	2a02:970:1006::/48	IPv6 end users Prague POP Krizeneckeho Namesti
	2a02:970:1011::/48	IPv6 infrastructure CeColo
	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.
	2a02:970:1399::/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
	AS6939	Hurricane Electric LLC	✔	✔
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS47232	ISP Alliance a.s.	✔	✔
	AS5405	Inter.link GmbH	✔	✔
	AS24940	Hetzner Online GmbH	✔	✔
	AS20562	Open Peering (Broadband Hosting B.V.)	✔	✔
	AS50629	LWLcom GmbH	✔	✔
	AS14840	BR.DIGITAL	✔	✔
	AS6424	EDGOO NETWORKS	✔	✔
	AS42184	TKRZ Stadtwerke GmbH	✔	✔
	AS6204	INTERKVM HOST SRL	✔	✔
	AS49544	i3D.net B.V	✔	✔
	AS60068	Datacamp Limited (CDN77 / DataPacket)	✔	✔
	AS9136	WOBCOM GmbH	✔	✔
	AS1764	Next Layer Telecommunications	✔	✔
	AS24482	SG.GS	✔	✔
	AS1820	WNET TELECOM USA Corp.	✔	✔
	AS25291	SysEleven GmbH	✔	✔
	AS200249	Products Up GmbH	✔	✔
	AS8447	A1 Telekom Austria AG	✔	✔
	AS22356	Durand do Brasil Ltda	✔	✔
	AS56382	vServer.site LTD	✔	✔
	AS8767	M-net Telekommunikations GmbH	✔	✔
	AS35297	Dataline LLC	✔	✔
	AS199524	Gcore S.A.	✔	✔
	AS8881	1&1 Versatel Deutschland GmbH	✔	✔
	AS44066	firstcolo GmbH	✔	✔
	AS60064	HOSTPALACE DATACENTERS LTD	✔	✘
	AS9498	Bharti Airtel Ltd.	✔	✘
	AS15943	wilhelm.tel GmbH	✔	✘
	AS51465	M3.NET Sp. z o.o. / Fixmap Group	✔	✘
	AS57344	Telehouse EAD	✔	✘
	AS57463	NetIX Communications JSC	✔	✘
	AS37721	Virtual Technologies & Solutions	✔	✘
	AS9009	M247 Europe SRL	✔	✘
	AS3212	Telemach Slovenija d.o.o.	✔	✘
	AS16097	HL komm Telekommunikations GmbH	✔	✘
	AS28917	Fiord Networks, UAB	✔	✘
	AS21430	WIA spol. s.r.o.	✔	✘

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
e-mail:         unread@ripe.net
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: 2025-04-17T03:25:11Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RIPE	as-transcz	852
RADB	as-hurricanev6	17629
RIPE	as-ispalliance-nix	228
RIPE	as-ispalliance-cz	228
RIPE	as1299:as-twelve99-eu-v6	91808
RIPE	as-sysdatacom-cz	1
RIPE	as-grapesc-cz	55
RIPE	as-peeringcz-rs	89143
RIPE	as1299:as-twelve99-eu-v4	91890
RIPE	as-ispalliance-peeringcz	229
RIPE	as-supernetwork	688