AS3257 66.226.232.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 204866.226.232.0/2466.226.233.0/2466.226.234.0/2466.226.235.0/2466.226.236.0/2466.226.237.0/2466.226.238.0/2466.226.239.0/24