AS3257 83.245.64.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 204883.245.64.0/2483.245.65.0/2483.245.66.0/2483.245.67.0/2483.245.68.0/2483.245.69.0/2483.245.70.0/2483.245.71.0/24