AS3257 216.231.32.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 2048216.231.32.0/24216.231.33.0/24216.231.34.0/24216.231.35.0/24216.231.36.0/24216.231.37.0/24216.231.38.0/24216.231.39.0/24