AS13912 216.163.184.0/21 CIDR and IP Range Summary.ASN: 13912 - Commtouch Inc.Host Count: 2046Addressable IPs: 2048216.163.184.0/24216.163.185.0/24216.163.186.0/24216.163.187.0/24216.163.188.0/24216.163.189.0/24216.163.190.0/24216.163.191.0/24