AS3257 64.81.64.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 204864.81.64.0/2464.81.65.0/2464.81.66.0/2464.81.67.0/2464.81.68.0/2464.81.69.0/2464.81.70.0/2464.81.71.0/24