AS3257 66.166.16.0/20 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 4094Addressable IPs: 409666.166.16.0/2466.166.17.0/2466.166.18.0/2466.166.19.0/2466.166.20.0/2466.166.21.0/2466.166.22.0/2466.166.23.0/2466.166.24.0/2466.166.25.0/2466.166.26.0/2466.166.27.0/2466.166.28.0/2466.166.29.0/2466.166.30.0/2466.166.31.0/24