AS3257 209.120.208.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 2048209.120.208.0/24209.120.209.0/24209.120.210.0/24209.120.211.0/24209.120.212.0/24209.120.213.0/24209.120.214.0/24209.120.215.0/24