AS59959 SFERIA SferiaNET.cz s.r.o.

SFERIA SferiaNET.cz s.r.o. · registered in Czechia

IPv4 addresses4,0964 prefixes · <0.001% of announced IPv4

Rank in Czechia#128largest network in CZ by IPv4 space, of 570 · 0.05% of CZ

Rank worldwide#14,944of 79,396 networks with IPv4

IPv68 x /32 (524,288 x /48)1 prefixes

CountryCzechia599 ASNs registered there

Open AS59959 in ASN lookup Look up an IP in this network (185.3.156.1) All networks in Czechia

IPv4 prefixes

All 4 prefixes, in address order.

185.3.156.0/22
185.147.44.0/22
185.243.124.0/22
193.35.92.0/22

IPv6 prefixes

All 1 prefix.

2a0d:1380::/29

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AS56456#127 C2NET C2NET s.r.o.4,096

AS62099#129 JMNET JM-Networks, s.r.o.4,096

AS197029#130 LAM-AS LAM plus s.r.o.4,096

AS57496#131 PRAHA1NET-AS Praha1.net z.s.p.o.4,096

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