View

If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	5.39.200.0/23	ISP Alliance a.s.
	46.29.224.0/21	ISP Alliance a.s.
	78.111.112.0/20	ISP Alliance a.s.
	94.140.25.0/24	HelaPC s.r.o.
	148.59.93.0/24	HelaPC s.r.o.
	185.15.108.0/22	ISP Alliance a.s.
	185.52.172.0/24	ISP Alliance a.s.
	185.151.171.0/24	ISP Alliance
	193.107.160.0/22	MACOnet s. r. o.
	195.26.25.0/24	Omcom s.r.o.
	2a02:17a0::/29	ISP Alliance a.s.
	2a02:17a0:d000::/36	ISP Alliance
	2a03:2a80::/29	ISP Alliance a.s.
	2a03:2a82::/31	ISP Alliance a.s.
	2a04:7bc0::/29	ISP Alliance a.s.
	2a04:7bc7::/32	ISP Alliance

---

Network Policy

Click here to learn more about what this graph means and what makes up a network policy Global Aggregation Policy epic_borg Policy determined_feynman

Chart Display Options

Display links using non straight lines

Prefixes in selected policy

Load all prefixes in policy

---

How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS39392	SH.cz s.r.o.	✔	✔
	AS6939	Hurricane Electric LLC	✘	✔
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS13199	Jaroslav Doubrava	✔	✘

---

Peers

	ASN	Description	IPv4	IPv6
	AS6939	Hurricane Electric LLC	✔	✔
	AS39392	SH.cz s.r.o.	✔	✔
	AS35236	UVT Internet s.r.o.	✔	✔
	AS204666	Jiri Tlapak	✔	✔
	AS201476	ISP Alliance a.s.	✔	✔
	AS6461	Zayo Bandwidth	✔	✔
	AS44002	Sys-DataCom s.r.o.	✔	✔
	AS210712	ISP Alliance a.s.	✔	✔
	AS204064	CEZNET s.r.o.	✔	✔
	AS207886	ECOMP spol s r.o.	✔	✔
	AS29134	Webglobe, s.r.o.	✔	✔
	AS33883	TRIOPTIMUM s.r.o.	✔	✔
	AS197879	HelaPC s.r.o.	✔	✔
	AS197296	United Networks SE	✔	✔
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS56566	SATT a.s.	✔	✔
	AS20723	AVONET, s.r.o.	✔	✔
	AS201654	CEZNET s.r.o.	✔	✔
	AS44500	Vlasimnet s.r.o.	✔	✔
	AS197393	ISP Alliance a.s.	✔	✔
	AS202618	Rychly drat, s.r.o.	✔	✔
	AS205002	CUBESOL, s.r.o.	✔	✔
	AS201559	United Networks SE	✔	✔
	AS50971	JHComp s.r.o.	✔	✔
	AS201625	United Networks SE	✔	✔
	AS202774	ISP Alliance a.s.	✔	✔
	AS209621	DOBNET, z.s.	✔	✔
	AS206951	BMB-Green s.r.o.	✔	✔
	AS198814	ALPHA StylSoft, s.r.o.	✔	✔
	AS47727	Warnet.cz s.r.o.	✔	✔
	AS56624	Rtyne.net s.r.o.	✔	✘
	AS39455	Jiri Tlapak	✔	✘
	AS50163	Altnet s.r.o.	✔	✔
	AS20562	Open Peering (Broadband Hosting B.V.)	✔	✔
	AS13199	Jaroslav Doubrava	✔	✔
	AS35046	OMEGA plus Chrudim s.r.o.	✔	✔
	AS212975	TeamCity s.r.o.	✔	✔
	AS50415	Ahosting a.s.	✔	✔
	AS202921	CC INTERNET s.r.o.	✔	✘
	AS22356	Durand do Brasil Ltda	✔	✔
	AS6204	INTERKVM HOST SRL	✔	✔
	AS205535	Windyghoul s.r.o.	✘	✔
	AS9136	WOBCOM GmbH	✔	✔
	AS202877	VEJNET.CZ s.r.o.	✔	✔
	AS57279	Sauron CZ s.r.o.	✔	✘
	AS24940	Hetzner Online GmbH	✔	✔
	AS216265	ARISTO NETWORKS LTD	✔	✘
	AS208847	Martin Fryzl	✔	✘
	AS52084	ISP Alliance a.s.	✔	✘
	AS201464	ISP Alliance a.s.	✔	✘
	AS201533	United Networks SE	✔	✘
	AS202131	ISP Alliance a.s.	✔	✘
	AS60529	Miroslav Klement	✔	✘
	AS8218	Zayo Europe	✔	✔
	AS12570	O2 Czech Republic, a.s.	✔	✘
	AS60068	Datacamp Limited (CDN77 / DataPacket)	✔	✔
	AS57077	AB-NET s.r.o.	✔	✘
	AS14840	BR.DIGITAL	✔	✔
	AS200249	Products Up GmbH	✔	✔
	AS49544	i3D.net B.V	✔	✔
	AS47692	Nessus GmbH	✔	✘
	AS1764	Next Layer Telecommunications	✔	✔
	AS42739	Hawe Telekom S.A. in Restructuring	✔	✔
	AS16276	OVH SAS	✔	✔
	AS8881	1&1 Versatel GmbH	✔	✔
	AS207994	Blockchain Creek B.V.	✔	✘
	AS8529	Zain Omantel International FZ-LLC	✔	✔
	AS15614	Dragon Internet a.s.	✔	✘
	AS50629	LWLcom GmbH	✔	✔
	AS13335	Cloudflare, Inc.	✔	✔
	AS24482	SG.GS	✔	✔
	AS51400	SPOJE.NET s.r.o.	✔	✔
	AS60345	icixs networks GmbH	✔	✘
	AS50698	TETA s.r.o.	✔	✔
	AS57344	Telehouse EAD	✔	✘
	AS51184	Fonira Telekom GmbH	✔	✔
	AS49121	Infinity Telecom, s.r.o.	✔	✔
	AS40994	Alwyzon (Hohl IT)	✔	✔
	AS32590	Valve Corporation	✔	✔
	AS199524	Gcore S.A.	✔	✔
	AS196735	PODA a.s.	✔	✘
	AS8801	Rocket Fibre Ltd	✔	✔
	AS44066	firstcolo GmbH	✔	✔
	AS8767	M-net Telekommunikations GmbH	✔	✔
	AS53062	ALT | GRUPO BRASIL TECPAR	✔	✘
	AS49025	PRO-ZETA a.s.	✔	✘
	AS34170	Aztelekom LLC	✔	✔
	AS41327	Fiber Telecom S.p.A.	✔	✔
	AS8447	A1 Telekom Austria AG	✔	✔
	AS2852	CESNET z.s.p.o.	✔	✘
	AS44522	Join-stock company "Internet Exchange"MSK-IX"	✔	✘
	AS21430	WIA spol. s.r.o.	✔	✘
	AS42306	Edera Group a.s.	✔	✘
	AS210139	DPT s.r.o.	✔	✘
	AS16097	HL komm Telekommunikations GmbH	✔	✘
	AS398465	Rackdog LLC	✔	✘
	AS3212	Telemach Slovenija d.o.o.	✔	✘
	AS21013	eww ag	✔	✘
	AS35297	Dataline LLC	✔	✔
	AS42473	Anexia Cloud Solutions GmbH	✔	✔
	AS199405	Oslavany.NET, spolek	✔	✘
	AS31117	ENERGOTEL a.s.	✔	✔
	AS36236	NetActuate, Inc	✔	✔
	AS44712	eHAMnet, s.r.o.	✔	✘
	AS6663	Türk Telekom International	✔	✔
	AS199081	Lancom Ltd.	✔	✔
	AS132337	Axclusive	✔	✘
	AS264409	Huge Networks	✔	✘
	AS44306	OMONIA d.o.o.	✔	✘
	AS202297	Skylon Solutions Limited	✔	✘
	AS4455	IX Reach Ltd	✔	✘
	AS29049	Delta Telecom Ltd	✔	✘
	AS263444	Open X Tecnologia Ltda	✔	✔
	AS34955	Martin Vicenik	✔	✘
	AS62099	JM-Networks, s.r.o.	✔	✘
	AS9498	Bharti Airtel Ltd.	✔	✘
	AS29278	Rackhost Zrt.	✔	✘
	AS24953	NETPLANET GmbH	✔	✘
	AS202605	EMPECOM, s.r.o.	✔	✘
	AS47200	NIX.CZ Route Servers	✔	✔
	AS1820	WNET TELECOM USA Corp.	✔	✔
	AS199803	ComSource s.r.o.	✔	✘
	AS37721	Virtual Technologies & Solutions	✘	✔
	AS6855	Slovak Telekom, a.s.	✔	✘
	AS15943	wilhelm.tel GmbH	✘	✔

---

Downstreams

	ASN	Description	IPv4	IPv6
	AS35236	UVT Internet s.r.o.	✔	✔
	AS201476	ISP Alliance a.s.	✔	✔
	AS204666	Jiri Tlapak	✔	✔
	AS44002	Sys-DataCom s.r.o.	✔	✔
	AS210712	ISP Alliance a.s.	✔	✔
	AS204064	CEZNET s.r.o.	✔	✔
	AS207886	ECOMP spol s r.o.	✔	✔
	AS29134	Webglobe, s.r.o.	✔	✔
	AS33883	TRIOPTIMUM s.r.o.	✔	✔
	AS197879	HelaPC s.r.o.	✔	✔
	AS197296	United Networks SE	✔	✔
	AS56566	SATT a.s.	✔	✔
	AS20723	AVONET, s.r.o.	✔	✔
	AS201654	CEZNET s.r.o.	✔	✔
	AS197393	ISP Alliance a.s.	✔	✔
	AS44500	Vlasimnet s.r.o.	✔	✔
	AS202618	Rychly drat, s.r.o.	✔	✔
	AS205002	CUBESOL, s.r.o.	✔	✔
	AS206951	BMB-Green s.r.o.	✔	✔
	AS209621	DOBNET, z.s.	✔	✔
	AS201559	United Networks SE	✔	✔
	AS202774	ISP Alliance a.s.	✔	✔
	AS50971	JHComp s.r.o.	✔	✔
	AS201625	United Networks SE	✔	✔
	AS198814	ALPHA StylSoft, s.r.o.	✔	✔
	AS47727	Warnet.cz s.r.o.	✔	✔
	AS35046	OMEGA plus Chrudim s.r.o.	✔	✔
	AS39455	Jiri Tlapak	✔	✘
	AS56624	Rtyne.net s.r.o.	✔	✘
	AS212975	TeamCity s.r.o.	✔	✔
	AS50163	Altnet s.r.o.	✔	✔
	AS50415	Ahosting a.s.	✔	✔
	AS202921	CC INTERNET s.r.o.	✔	✘
	AS205535	Windyghoul s.r.o.	✘	✔
	AS202877	VEJNET.CZ s.r.o.	✔	✔
	AS13199	Jaroslav Doubrava	✔	✔
	AS57279	Sauron CZ s.r.o.	✔	✘
	AS201464	ISP Alliance a.s.	✔	✘
	AS52084	ISP Alliance a.s.	✔	✘
	AS202131	ISP Alliance a.s.	✔	✘
	AS201533	United Networks SE	✔	✘
	AS208847	Martin Fryzl	✔	✘
	AS60529	Miroslav Klement	✔	✘
	AS57077	AB-NET s.r.o.	✔	✘
	AS12570	O2 Czech Republic, a.s.	✔	✘
	AS15614	Dragon Internet a.s.	✔	✘
	AS196735	PODA a.s.	✔	✘
	AS51400	SPOJE.NET s.r.o.	✔	✔
	AS42306	Edera Group a.s.	✔	✘
	AS210139	DPT s.r.o.	✔	✘
	AS49025	PRO-ZETA a.s.	✔	✘
	AS44522	Join-stock company "Internet Exchange"MSK-IX"	✔	✘
	AS44712	eHAMnet, s.r.o.	✔	✘
	AS199405	Oslavany.NET, spolek	✔	✘
	AS34955	Martin Vicenik	✔	✘
	AS202297	Skylon Solutions Limited	✔	✘
	AS199803	ComSource s.r.o.	✔	✘
	AS39392	SH.cz s.r.o.	✔	✘
	AS60068	Datacamp Limited (CDN77 / DataPacket)	✔	✘

aut-num:        AS47232
as-name:        ISPAlliance
org:            ORG-GSa22-RIPE
import:         from AS21430 accept ANY
import:         from AS29208 accept ANY
import:         from AS197296 accept ANY
import:         from AS56624 accept ANY
import:         from AS49767 accept ANY
import:         from AS39392 accept ANY
import:         from AS35046 accept ANY
import:         from AS200059 accept ANY
import-via:     AS6777 from AS-ANY accept ANY
export:         to AS29208 announce AS-ISPALLIANCE-CZ
export:         to AS197296 announce ANY
export:         to AS56624 announce ANY
export:         to AS49767 announce ANY
export:         to AS39392 announce ANY
export:         to AS35046 announce ANY
export:         to AS200059 announce ANY
export-via:     AS6777 to AS-ANY announce AS-ISPALLIANCE-CZ
remarks:        This ASN is used for residential broadband ISPs services.
remarks:        ----------------------------------------------------------------------
remarks:        TRANSIT IMPORT
mp-import:      afi any.unicast from AS47232:AS-TRANSIT accept ANY
remarks:
remarks:        EXCHANGE POINTS IMPORT
mp-import:      afi any.unicast from AS47232:AS-IX accept ANY
remarks:
remarks:        CUSTOMERS IMPORT
mp-import:      afi any.unicast from AS47232:AS-CUSTOMERS accept PeerAS
remarks:        ----------------------------------------------------------------------
remarks:
remarks:        ----------------------------------------------------------------------
remarks:        TRANSIT EXPORT
mp-export:      afi any.unicast to AS47232:AS-TRANSIT announce AS-ISPALLIANCE-CZ
remarks:
remarks:        EXCHANGE POINTS EXPORT
mp-export:      afi any.unicast to AS47232:AS-IX announce AS-ISPALLIANCE-CZ
remarks:
remarks:        CUSTOMERS EXPORT
mp-export:      afi any.unicast to AS47232:AS-CUSTOMERS announce ANY
remarks:        ----------------------------------------------------------------------
remarks:
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
notify:         ruzicka@grapesc.cz
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-GRAPESC
created:        2008-05-21T13:49:01Z
last-modified:  2026-05-29T05:07:46Z
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-GSa22-RIPE
org-name:       ISP Alliance a.s.
country:        CZ
org-type:       LIR
address:        Dummy address for ORG-GSa22-RIPE
# Email removed, Log into bgp.tools to see whois emails/phone numbers
abuse-c:        IA3261-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        MNT-GRAPESC
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-GRAPESC
created:        2008-04-22T12:13:14Z
last-modified:  2026-05-13T07:32:19Z
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: 2026-06-05T03:26:12Z UTC

---

Member of the following AS-SETs

-	Member	ASN Count
RIPE	as-ispalliance-peeringcz	233
RIPE	as34968:as-nl-ix-peers	89
RIPE	as-grapesc-cz	54
RIPE	as-43413_nt-nix	69
RIPE	as24971:as-mai-nix-peer	89958
RIPE	as-ispa-fenix	233
RIPE	as-gttcust	91680
RIPE	as-ispalliance-cz	233
RADB	as-hurricanev6	21127
ALTDB	as-jarmtelco	651
RIPE	as-ispalliance-nix	233
RIPE	as204666:as-tlapnet-cz	14
RIPE	as8251:as-nix-peerings	49
RIPE	as-gttcust6	91117
RIPE	as42000:as-nixcz-peerings	80