AS3257 72.13.244.208/28 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 14Addressable IPs: 16 72.13.244.20972.13.244.21072.13.244.21172.13.244.21272.13.244.21372.13.244.21472.13.244.21572.13.244.21672.13.244.21772.13.244.21872.13.244.21972.13.244.22072.13.244.22172.13.244.22272.13.244.22372.13.244.224