AS201654 CEZNET-AS CEZNET s.r.o.

CEZNET-AS CEZNET s.r.o. · registered in Czechia

IPv4 addresses1,7923 prefixes · <0.001% of announced IPv4

Rank in Czechia#252largest network in CZ by IPv4 space, of 570 · 0.02% of CZ

Rank worldwide#24,635of 79,396 networks with IPv4

IPv64 x /32 (262,144 x /48)1 prefixes

CountryCzechia599 ASNs registered there

Open AS201654 in ASN lookup Look up an IP in this network (185.67.188.1) All networks in Czechia

IPv4 prefixes

All 3 prefixes, in address order.

185.67.188.0/22
185.151.168.0/23
185.151.170.0/24

IPv6 prefixes

All 1 prefix.

2a05:1200::/30

Other ASNs named CEZNET-AS CEZNET s.r.o.

3 other networks use the same organisation name; together with AS201654 they announce 29,184 IPv4 addresses.

ASNNameIPv4 addresses

AS57728CEZNET-AS CEZNET s.r.o. CZ15,360

AS198002CEZNET-AS CEZNET s.r.o. CZ8,192

AS204064CEZNET-AS CEZNET s.r.o. CZ3,840

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ASNNameIPv4 addresses

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AS51134#250 INTACTO-AS Development 777 s.r.o.1,792

AS211248#251 cz_artemis4 Artemis NET s.r.o.1,792

AS209671#253 QRATOR-SW Qrator Labs CZ s.r.o.1,792

AS60606#254 Blindspot PRO-ZETA a.s.1,792

AS41030#255 ASNOVOTNYCZ Jaroslav Novotny1,792

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources