AS23520 63.245.0.0/21 CIDR and IP Range Summary.ASN: 23520 - Columbus Networks USA Inc.Host Count: 2046Addressable IPs: 204863.245.0.0/2463.245.1.0/2463.245.2.0/2463.245.3.0/2463.245.4.0/2463.245.5.0/2463.245.6.0/2463.245.7.0/24