Home Knowledge Base Autonomous System Numbers (ASNs) ASN by Organisation AS57121 Autonomous System Number (ASN): AS57121 Organisation: Piotr Bukowczyk trading as IT Systematic Group Name: IT-SYSTEMATIC-GROUP Registered in: Poland Registry: RIPE Total IPv4 Addresses: 7,424 Total IPv4 Prefixes: 5 Last updated: 2025-1-10 6:19:0 Previous Miejsce Piastowe Next Paulista