AS3257 72.13.244.16/29 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 6Addressable IPs: 8 72.13.244.1772.13.244.1872.13.244.1972.13.244.2072.13.244.2172.13.244.2272.13.244.2372.13.244.24