AS3257 72.249.200.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 204872.249.200.0/2472.249.201.0/2472.249.202.0/2472.249.203.0/2472.249.204.0/2472.249.205.0/2472.249.206.0/2472.249.207.0/24