AS3257 216.231.48.0/20 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 4094Addressable IPs: 4096216.231.48.0/24216.231.49.0/24216.231.50.0/24216.231.51.0/24216.231.52.0/24216.231.53.0/24216.231.54.0/24216.231.55.0/24216.231.56.0/24216.231.57.0/24216.231.58.0/24216.231.59.0/24216.231.60.0/24216.231.61.0/24216.231.62.0/24216.231.63.0/24