AS3257 149.235.56.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 2048149.235.56.0/24149.235.57.0/24149.235.58.0/24149.235.59.0/24149.235.60.0/24149.235.61.0/24149.235.62.0/24149.235.63.0/24