AS204383 CZ-SPCOM-AS SPCom s.r.o.

CZ-SPCOM-AS SPCom s.r.o. · registered in Czechia

IPv4 addresses11,26419 prefixes · <0.001% of announced IPv4

Rank in Czechia#58largest network in CZ by IPv4 space, of 570 · 0.14% of CZ

Rank worldwide#8,502of 79,396 networks with IPv4

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

CountryCzechia599 ASNs registered there

Open AS204383 in ASN lookup Look up an IP in this network (77.78.77.1) All networks in Czechia

IPv4 prefixes

All 19 prefixes, in address order.

77.78.77.0/24
77.78.78.0/23
77.78.94.0/24
77.78.112.0/22
77.78.116.0/23
81.0.230.0/24
81.0.242.0/23
82.208.4.0/23
82.208.26.0/24
82.208.32.0/23
82.208.60.0/22
85.239.253.0/24
91.245.8.0/21
109.123.206.0/23
109.123.208.0/23
185.250.172.0/22
217.11.232.0/23
217.11.243.0/24
217.11.246.0/23

IPv6 prefixes

All 1 prefix.

2a0c:fc0::/29

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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