AS3257 216.27.160.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 2048216.27.160.0/24216.27.161.0/24216.27.162.0/24216.27.163.0/24216.27.164.0/24216.27.165.0/24216.27.166.0/24216.27.167.0/24