AS198050 ALFA-SYSTEM-AS Marek Piwowarski trading as ALFA-SYSTEM M. Piwowarski, A. Widera s.j.

ALFA-SYSTEM-AS Marek Piwowarski trading as ALFA-SYSTEM M. Piwowarski, A. Widera s.j. · registered in Poland

IPv4 addresses5,37610 prefixes · <0.001% of announced IPv4

Rank in Poland#225largest network in PL by IPv4 space, of 2,091 · 0.03% of PL

Rank worldwide#12,999of 79,396 networks with IPv4

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

CountryPoland2,145 ASNs registered there

Open AS198050 in ASN lookup Look up an IP in this network (5.253.230.1) All networks in Poland

IPv4 prefixes

All 10 prefixes, in address order.

5.253.230.0/24
64.46.124.0/24
64.190.43.0/24
91.231.70.0/23
91.231.80.0/22
176.97.24.0/21
194.169.138.0/24
209.162.203.0/24
212.47.33.0/24
217.197.102.0/24

IPv6 prefixes

All 1 prefix.

2a0f:1700::/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