AS12663 VODAFONE-GROUP Fastweb SpA

VODAFONE-GROUP Fastweb SpA · registered in Italy

IPv4 addresses453,376258 prefixes · 0.014% of announced IPv4

Rank in Italy#11largest network in IT by IPv4 space, of 1,081 · 0.87% of IT

Rank worldwide#623of 79,396 networks with IPv4

IPv632 x /482 prefixes

CountryItaly1,121 ASNs registered there

Open AS12663 in ASN lookup Look up an IP in this network (37.25.128.1) All networks in Italy

IPv4 prefixes

All 258 prefixes, in address order.

37.25.128.0/20
37.25.144.0/23
37.25.146.0/24
37.25.149.0/24
37.25.150.0/23
37.25.152.0/21
37.25.160.0/22
37.25.164.0/23
37.25.166.0/23
37.25.169.0/24
37.25.170.0/24
37.25.172.0/22
37.25.176.0/21
37.25.184.0/22
37.25.188.0/22
37.25.192.0/19
37.25.224.0/21
37.25.232.0/22
37.25.236.0/23
37.25.238.0/23
37.25.240.0/22
37.25.245.0/24
37.25.246.0/23
37.25.248.0/21
46.108.0.0/18
46.108.64.0/19
46.108.96.0/20
46.108.120.0/21
46.108.128.0/18
46.108.192.0/20
46.108.208.0/24
46.108.209.0/24
46.108.210.0/23
46.108.212.0/23
46.108.214.0/23
46.108.216.0/22
46.108.220.0/23
46.108.223.0/24
46.108.224.0/21
46.108.233.0/24
46.108.234.0/24
46.108.236.0/22
46.108.240.0/20
46.190.128.0/21
46.190.136.0/24
46.190.138.0/23
46.190.142.0/23
46.190.144.0/24
46.190.146.0/23
46.190.148.0/22
46.190.152.0/21
46.190.160.0/19
46.190.192.0/20
46.190.208.0/21
46.190.216.0/24
46.190.218.0/23
46.190.220.0/23
46.190.222.0/24
46.190.224.0/23
46.190.226.0/23
46.190.228.0/22
46.190.232.0/21
46.190.240.0/21
46.190.248.0/22
46.190.252.0/23
46.190.255.0/24
47.73.1.0/24
47.73.8.0/21
47.73.36.0/23
47.73.40.0/24
47.73.42.0/24
47.73.44.0/22
47.73.56.0/22
47.73.63.0/24
47.73.67.0/24
47.73.68.0/24
47.73.73.0/24
47.73.74.0/23
47.73.77.0/24
47.73.78.0/23
47.73.88.0/22
47.73.93.0/24
47.73.94.0/24
47.73.96.0/21
47.73.104.0/23
47.73.106.0/24
47.73.108.0/23
47.73.110.0/24
47.73.120.0/23
47.73.123.0/24
47.73.124.0/23
47.73.218.0/24
47.73.220.0/24
47.73.224.0/21
47.73.248.0/24
47.73.252.0/22
62.213.130.0/23
62.213.132.0/22
62.213.136.0/21
62.213.144.0/21
62.213.152.0/22
85.205.32.0/23
85.205.35.0/24
85.205.36.0/22
85.205.76.0/24
85.205.85.0/24
85.205.92.0/22
85.205.108.0/24
85.205.121.0/24
85.205.150.0/23
85.205.164.0/24
85.205.170.0/24
85.205.192.0/21
85.205.206.0/23
85.205.208.0/20
85.205.224.0/22
85.205.228.0/23
85.205.230.0/24
85.205.233.0/24
85.205.251.0/24
89.32.48.0/21
92.114.8.0/21
108.179.64.0/19
108.179.96.0/21
108.179.104.0/22
108.179.108.0/22
108.179.112.0/21
130.195.32.0/20
130.195.64.0/18
130.195.128.0/18
130.195.200.0/21
139.47.160.0/20
139.47.176.0/23
139.47.178.0/24
139.47.180.0/22
139.47.184.0/22
139.47.188.0/23
139.47.190.0/23
139.47.192.0/22
139.47.204.0/23
139.47.207.0/24
139.47.208.0/22
139.47.216.0/22
139.47.220.0/22
139.47.224.0/23
139.47.226.0/24
139.47.227.0/24
139.47.228.0/22
139.47.232.0/21
139.47.243.0/24
139.47.244.0/22
139.47.248.0/21
145.230.0.0/22
145.230.4.0/22
145.230.8.0/21
145.230.16.0/20
145.230.32.0/19
145.230.64.0/19
145.230.96.0/22
145.230.100.0/23
145.230.102.0/23
145.230.104.0/21
145.230.112.0/20
145.230.128.0/17
176.125.23.0/24
188.240.84.0/22
192.125.128.0/22
192.125.132.0/23
192.125.134.0/24
192.125.135.0/24
192.125.136.0/21
192.125.144.0/20
192.125.160.0/20
192.125.176.0/20
192.125.192.0/21
192.125.200.0/22
192.125.204.0/22
192.125.208.0/20
192.125.224.0/19
195.232.128.0/22
195.232.132.0/23
195.232.134.0/23
195.232.136.0/23
195.232.138.0/23
195.232.140.0/22
195.232.144.0/23
195.232.148.0/22
195.232.152.0/21
195.232.160.0/22
195.232.164.0/22
195.232.168.0/24
195.232.169.0/24
195.232.170.0/24
195.232.171.0/24
195.232.172.0/22
195.232.176.0/24
195.232.177.0/24
195.232.178.0/23
195.232.180.0/23
195.232.182.0/23
195.232.184.0/21
195.232.192.0/23
195.232.194.0/24
195.232.195.0/24
195.232.196.0/23
195.232.198.0/24
195.232.199.0/24
195.232.200.0/21
195.232.208.0/20
195.232.224.0/22
195.232.228.0/22
195.232.232.0/21
195.232.240.0/22
195.232.244.0/24
195.232.245.0/24
195.232.246.0/23
195.232.248.0/21
195.233.0.0/21
195.233.8.0/23
195.233.10.0/23
195.233.12.0/22
195.233.16.0/20
195.233.32.0/20
195.233.48.0/23
195.233.52.0/24
195.233.54.0/23
195.233.56.0/23
195.233.58.0/23
195.233.60.0/22
195.233.64.0/18
195.233.128.0/22
195.233.132.0/22
195.233.136.0/21
195.233.144.0/24
195.233.145.0/24
195.233.146.0/23
195.233.148.0/24
195.233.150.0/24
195.233.152.0/23
195.233.154.0/24
195.233.156.0/22
195.233.160.0/19
195.233.192.0/20
195.233.208.0/22
195.233.212.0/24
195.233.213.0/24
195.233.214.0/24
195.233.215.0/24
195.233.216.0/21
195.233.224.0/21
195.233.232.0/22
195.233.236.0/22
195.233.240.0/21
195.233.248.0/23
195.233.250.0/24
195.233.251.0/24
195.233.252.0/22
208.53.128.0/18

IPv6 prefixes

All 2 prefixes.

2a01:818:1000::/44
2a01:818:1060::/44

Similar-sized networks in Italy

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AS8612#10 TISCALI-IT Smeraldo S.p.A.525,056

AS35612#12 NGI-AS EOLO S.p.A.361,472

AS210278#13 SKYIT-BB Sky Italia srl328,704

AS31034#14 ARUBA-ASN Aruba S.p.A.282,624

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