AS3257 66.17.192.0/20 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 4094Addressable IPs: 409666.17.192.0/2466.17.193.0/2466.17.194.0/2466.17.195.0/2466.17.196.0/2466.17.197.0/2466.17.198.0/2466.17.199.0/2466.17.200.0/2466.17.201.0/2466.17.202.0/2466.17.203.0/2466.17.204.0/2466.17.205.0/2466.17.206.0/2466.17.207.0/24