AS23520 63.245.80.0/21 CIDR and IP Range Summary.ASN: 23520 - Columbus Networks USA Inc.Host Count: 2046Addressable IPs: 204863.245.80.0/2463.245.81.0/2463.245.82.0/2463.245.83.0/2463.245.84.0/2463.245.85.0/2463.245.86.0/2463.245.87.0/24