AS3257 64.81.160.0/19 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 8190Addressable IPs: 819264.81.160.0/2464.81.161.0/2464.81.162.0/2464.81.163.0/2464.81.164.0/2464.81.165.0/2464.81.166.0/2464.81.167.0/2464.81.168.0/2464.81.169.0/2464.81.170.0/2464.81.171.0/2464.81.172.0/2464.81.173.0/2464.81.174.0/2464.81.175.0/2464.81.176.0/2464.81.177.0/2464.81.178.0/2464.81.179.0/2464.81.180.0/2464.81.181.0/2464.81.182.0/2464.81.183.0/2464.81.184.0/2464.81.185.0/2464.81.186.0/2464.81.187.0/2464.81.188.0/2464.81.189.0/2464.81.190.0/2464.81.191.0/24