AS3257 72.13.250.144/28 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 14Addressable IPs: 16 72.13.250.14572.13.250.14672.13.250.14772.13.250.14872.13.250.14972.13.250.15072.13.250.15172.13.250.15272.13.250.15372.13.250.15472.13.250.15572.13.250.15672.13.250.15772.13.250.15872.13.250.15972.13.250.160