AS51586 SERVERZONECZ ServerZone s.r.o.

SERVERZONECZ ServerZone s.r.o. · registered in Czechia

IPv4 addresses1,2802 prefixes · <0.001% of announced IPv4

Rank in Czechia#268largest network in CZ by IPv4 space, of 570 · 0.02% of CZ

Rank worldwide#27,625of 79,396 networks with IPv4

IPv62 x /32 (131,072 x /48)2 prefixes

CountryCzechia599 ASNs registered there

Open AS51586 in ASN lookup Look up an IP in this network (185.216.220.1) All networks in Czechia

IPv4 prefixes

All 2 prefixes, in address order.

185.216.220.0/22
212.18.101.0/24

IPv6 prefixes

All 2 prefixes.

2a0b:bdc0::/32
2a12:5c00::/32

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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