AS3257 194.77.72.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 2048194.77.72.0/24194.77.73.0/24194.77.74.0/24194.77.75.0/24194.77.76.0/24194.77.77.0/24194.77.78.0/24194.77.79.0/24