AS3257 216.193.232.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 2048216.193.232.0/24216.193.233.0/24216.193.234.0/24216.193.235.0/24216.193.236.0/24216.193.237.0/24216.193.238.0/24216.193.239.0/24