AS3257 154.14.240.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 2048154.14.240.0/24154.14.241.0/24154.14.242.0/24154.14.243.0/24154.14.244.0/24154.14.245.0/24154.14.246.0/24154.14.247.0/24