AS56821 knvnet1-as KnVnet services s.r.o.

knvnet1-as KnVnet services s.r.o. · registered in Czechia

IPv4 addresses2,0481 prefixes · <0.001% of announced IPv4

Rank in Czechia#200largest network in CZ by IPv4 space, of 570 · 0.02% of CZ

Rank worldwide#21,438of 79,396 networks with IPv4

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

CountryCzechia599 ASNs registered there

Open AS56821 in ASN lookup Look up an IP in this network (89.239.24.1) All networks in Czechia

IPv4 prefixes

All 1 prefix, in address order.

89.239.24.0/21

IPv6 prefixes

All 2 prefixes.

2a02:4007::/32
2a14:9880::/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