AS51399 PL-FIBERWAY-AS Fiberway Sp. z o.o.

PL-FIBERWAY-AS Fiberway Sp. z o.o. · registered in Poland

IPv4 addresses4,8646 prefixes · <0.001% of announced IPv4

Rank in Poland#256largest network in PL by IPv4 space, of 2,091 · 0.03% of PL

Rank worldwide#13,860of 79,396 networks with IPv4

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

CountryPoland2,145 ASNs registered there

Open AS51399 in ASN lookup Look up an IP in this network (91.103.144.1) All networks in Poland

IPv4 prefixes

All 6 prefixes, in address order.

91.103.144.0/22
91.217.0.0/23
91.218.200.0/22
91.218.208.0/22
110.172.146.0/24
185.157.12.0/22

IPv6 prefixes

All 1 prefix.

2a07:a080::/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