AS47681 RIOMEDIA O2 Czech Republic, a.s.

RIOMEDIA O2 Czech Republic, a.s. · registered in Czechia

IPv4 addresses1,0241 prefixes · <0.001% of announced IPv4

Rank in Czechia#386largest network in CZ by IPv4 space, of 570 · 0.01% of CZ

Rank worldwide#37,731of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryCzechia599 ASNs registered there

Open AS47681 in ASN lookup Look up an IP in this network (185.191.184.1) All networks in Czechia

IPv4 prefixes

All 1 prefix, in address order.

185.191.184.0/22

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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