AS23520 63.245.64.0/20 CIDR and IP Range Summary.ASN: 23520 - Columbus Networks USA Inc.Host Count: 4094Addressable IPs: 409663.245.64.0/2463.245.65.0/2463.245.66.0/2463.245.67.0/2463.245.68.0/2463.245.69.0/2463.245.70.0/2463.245.71.0/2463.245.72.0/2463.245.73.0/2463.245.74.0/2463.245.75.0/2463.245.76.0/2463.245.77.0/2463.245.78.0/2463.245.79.0/24