AS3257 72.13.244.48/28 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 14Addressable IPs: 16 72.13.244.4972.13.244.5072.13.244.5172.13.244.5272.13.244.5372.13.244.5472.13.244.5572.13.244.5672.13.244.5772.13.244.5872.13.244.5972.13.244.6072.13.244.6172.13.244.6272.13.244.6372.13.244.64