AS3257 66.54.173.64/28 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 14Addressable IPs: 16 66.54.173.6566.54.173.6666.54.173.6766.54.173.6866.54.173.6966.54.173.7066.54.173.7166.54.173.7266.54.173.7366.54.173.7466.54.173.7566.54.173.7666.54.173.7766.54.173.7866.54.173.7966.54.173.80