AS15704 212.231.72.0/21 CIDR and IP Range Summary.ASN: 15704 - Xtra Telecom S.A.Host Count: 2046Addressable IPs: 2048212.231.72.0/24212.231.73.0/24212.231.74.0/24212.231.75.0/24212.231.76.0/24212.231.77.0/24212.231.78.0/24212.231.79.0/24