AS15704 66.81.184.0/21 CIDR and IP Range Summary.ASN: 15704 - Xtra Telecom S.A.Host Count: 2046Addressable IPs: 204866.81.184.0/2466.81.185.0/2466.81.186.0/2466.81.187.0/2466.81.188.0/2466.81.189.0/2466.81.190.0/2466.81.191.0/24