AS56353 FIRSTLINE-AS First Line Software s.r.o.

FIRSTLINE-AS First Line Software s.r.o. · registered in Czechia

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

Rank in Czechia#389largest network in CZ by IPv4 space, of 570 · 0.01% of CZ

Rank worldwide#38,141of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryCzechia599 ASNs registered there

Open AS56353 in ASN lookup Look up an IP in this network (91.225.128.1) All networks in Czechia

IPv4 prefixes

All 1 prefix, in address order.

91.225.128.0/22

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ASNNameIPv4 addresses

AS47681#386 RIOMEDIA O2 Czech Republic, a.s.1,024

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AS50980#388 net3 cloudinfrastack, s.r.o.1,024

AS56827#390 ASMIRNETCZ mirnet s.r.o.1,024

AS57904#391 ASVEVYNET Vevynet s.r.o.1,024

AS59664#392 ASOPTON Opton s.r.o.1,024

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