AS3257 72.13.224.0/19 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 8190Addressable IPs: 819272.13.224.0/2472.13.225.0/2472.13.226.0/2472.13.227.0/2472.13.228.0/2472.13.229.0/2472.13.230.0/2472.13.231.0/2472.13.232.0/2472.13.233.0/2472.13.234.0/2472.13.235.0/2472.13.236.0/2472.13.237.0/2472.13.238.0/2472.13.239.0/2472.13.240.0/2472.13.241.0/2472.13.242.0/2472.13.243.0/2472.13.244.0/2472.13.245.0/2472.13.246.0/2472.13.247.0/2472.13.248.0/2472.13.249.0/2472.13.250.0/2472.13.251.0/2472.13.252.0/2472.13.253.0/2472.13.254.0/2472.13.255.0/24