AS3257 216.254.16.0/20 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 4094Addressable IPs: 4096216.254.16.0/24216.254.17.0/24216.254.18.0/24216.254.19.0/24216.254.20.0/24216.254.21.0/24216.254.22.0/24216.254.23.0/24216.254.24.0/24216.254.25.0/24216.254.26.0/24216.254.27.0/24216.254.28.0/24216.254.29.0/24216.254.30.0/24216.254.31.0/24