AS3257 76.74.72.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 204876.74.72.0/2476.74.73.0/2476.74.74.0/2476.74.75.0/2476.74.76.0/2476.74.77.0/2476.74.78.0/2476.74.79.0/24