AS3257 72.13.250.136/29 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 6Addressable IPs: 8 72.13.250.13772.13.250.13872.13.250.13972.13.250.14072.13.250.14172.13.250.14272.13.250.14372.13.250.144