AS23520 Columbus Networks USA, Inc.

LIBERTY-NETWORKS - Columbus Networks USA, Inc. · registered in the United States

IPv4 addresses152,064154 prefixes · 0.005% of announced IPv4

Rank in United States#403largest network in US by IPv4 space, of 18,338 · 0.01% of US

Rank worldwide#1,312of 79,396 networks with IPv4

IPv62 x /32 (131,072 x /48)2 prefixes

CountryUnited States18,679 ASNs registered there

Open AS23520 in ASN lookup Look up an IP in this network (23.249.136.1) All networks in United States

IPv4 prefixes

All 154 prefixes, in address order.

23.249.136.0/24
63.245.0.0/21
63.245.16.0/23
63.245.20.0/22
63.245.24.0/22
63.245.28.0/23
63.245.30.0/23
63.245.32.0/24
63.245.33.0/24
63.245.34.0/23
63.245.36.0/22
63.245.40.0/21
63.245.48.0/20
63.245.64.0/22
63.245.68.0/23
63.245.70.0/23
63.245.72.0/24
63.245.73.0/24
63.245.74.0/23
63.245.76.0/22
63.245.80.0/21
63.245.90.0/23
63.245.92.0/24
63.245.94.0/24
63.245.96.0/21
63.245.104.0/24
63.245.106.0/23
63.245.110.0/23
67.230.0.0/19
67.230.80.0/24
67.230.82.0/23
67.230.85.0/24
67.230.86.0/24
67.230.89.0/24
67.230.90.0/24
67.230.93.0/24
67.230.95.0/24
67.230.96.0/24
67.230.97.0/24
67.230.98.0/23
67.230.100.0/23
67.230.102.0/23
67.230.104.0/21
67.230.112.0/21
67.230.120.0/22
67.230.124.0/23
67.230.127.0/24
69.79.0.0/21
69.79.8.0/23
69.79.14.0/23
69.79.16.0/21
69.79.24.0/23
69.79.27.0/24
69.79.29.0/24
69.79.30.0/23
69.79.32.0/24
69.79.33.0/24
69.79.34.0/23
69.79.36.0/22
69.79.40.0/21
69.79.48.0/20
69.79.64.0/22
69.79.68.0/23
69.79.72.0/21
69.79.80.0/23
69.79.83.0/24
69.79.84.0/22
69.79.88.0/21
69.79.96.0/22
69.79.101.0/24
69.79.103.0/24
69.79.104.0/22
69.79.108.0/24
69.79.112.0/23
69.79.115.0/24
69.79.116.0/22
69.79.120.0/22
69.79.128.0/19
69.79.160.0/20
69.79.176.0/21
69.79.184.0/22
69.79.188.0/23
69.79.191.0/24
69.79.192.0/22
69.79.197.0/24
69.79.198.0/23
69.79.200.0/22
69.79.205.0/24
69.79.206.0/23
69.79.216.0/21
69.79.226.0/24
69.79.228.0/22
69.79.232.0/21
69.79.240.0/20
72.252.5.0/24
72.252.6.0/23
72.252.16.0/21
72.252.72.0/21
72.252.80.0/21
143.208.164.0/22
156.235.73.0/24
156.235.74.0/24
181.191.190.0/23
190.131.193.0/24
190.131.209.0/24
190.131.233.0/24
190.131.249.0/24
190.242.1.0/24
190.242.2.0/23
190.242.4.0/22
190.242.9.0/24
190.242.10.0/24
190.242.11.0/24
190.242.12.0/24
190.242.14.0/23
190.242.16.0/22
190.242.20.0/24
190.242.28.0/23
190.242.31.0/24
190.242.48.0/23
190.242.56.0/23
190.242.64.0/22
190.242.71.0/24
190.242.72.0/21
190.242.80.0/21
190.242.89.0/24
190.242.90.0/23
190.242.92.0/22
190.242.102.0/24
190.242.118.0/23
190.242.126.0/24
190.242.132.0/22
190.242.136.0/23
190.242.138.0/24
190.242.140.0/22
190.242.144.0/23
190.242.146.0/23
190.242.152.0/22
190.242.156.0/23
190.242.163.0/24
190.242.164.0/22
190.242.168.0/21
190.242.176.0/21
190.242.191.0/24
190.242.192.0/23
190.242.194.0/23
190.242.196.0/22
190.242.200.0/21
190.242.208.0/22
190.242.212.0/24
190.242.214.0/23
190.242.216.0/21
190.242.224.0/19
208.169.92.0/24

IPv6 prefixes

All 2 prefixes.

2607:f438::/32
2803:f950::/32

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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