AS51185 MAINSTREAMING-AS MainStreaming SpA

MAINSTREAMING-AS MainStreaming SpA · registered in Italy

IPv4 addresses6,14410 prefixes · <0.001% of announced IPv4

Rank in Italy#207largest network in IT by IPv4 space, of 1,081 · 0.01% of IT

Rank worldwide#12,325of 79,396 networks with IPv4

IPv621 x /4819 prefixes

CountryItaly1,121 ASNs registered there

Open AS51185 in ASN lookup Look up an IP in this network (45.157.64.1) All networks in Italy

IPv4 prefixes

All 10 prefixes, in address order.

45.157.64.0/22
94.124.64.0/23
94.124.67.0/24
94.124.68.0/22
178.248.48.0/22
178.248.52.0/23
178.248.54.0/24
185.45.208.0/24
185.45.211.0/24
185.187.156.0/22

IPv6 prefixes

All 19 prefixes.

2a02:2890:efff::/48
2a02:2890:ffff::/48
2a02:2891::/47
2a02:2891:2::/48
2a02:2891:4::/48
2a02:2891:9::/48
2a02:2891:10::/48
2a02:2891:12::/47
2a02:2891:15::/48
2a02:2891:16::/48
2a02:2891:18::/48
2a02:2891:29::/48
2a02:2891:ff::/48
2a02:2891:157::/48
2a02:2891:160::/48
2a02:2892:32::/48
2a02:2892:40::/48
2a02:2892:53::/48
2a02:2893:158::/48

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AS16379#208 UNICREDIT-AS-MUC-DE UniCredit S.p.A.6,144

AS34618#209 PROMETEO-AS Prometeo S.r.l.6,144

AS42425#210 ASN-AVANZATI PSA S.r.l.6,144

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