AS12328 ALAN-SYSTEMS-RYBNIK-AS "Alan Systems" Sp. z o. o.

ALAN-SYSTEMS-RYBNIK-AS "Alan Systems" Sp. z o. o. · registered in Poland

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in Poland#1,071largest network in PL by IPv4 space, of 2,091 · <0.01% of PL

Rank worldwide#49,768of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryPoland2,145 ASNs registered there

Open AS12328 in ASN lookup Look up an IP in this network (91.229.26.1) All networks in Poland

IPv4 prefixes

All 1 prefix, in address order.

91.229.26.0/23

Similar-sized networks in Poland

ASNNameIPv4 addresses

AS210959#1068 SOFTWARESTUDIO SOFTWARESTUDIO SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA512

AS212623#1069 NYSANET-AS NysaNet sp. z o.o.512

AS8886#1070 PGE-SYSTEMY-AS PGE Systemy S.A.512

AS12642#1072 LEON-AS2 Leon Sp. z o.o.512

AS12774#1073 PWN-ASN Wydawnictwo Naukowe PWN SA512

AS13274#1074 MBANK-SA MBANK S.A.512

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