AS3257 84.20.16.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 204884.20.16.0/2484.20.17.0/2484.20.18.0/2484.20.19.0/2484.20.20.0/2484.20.21.0/2484.20.22.0/2484.20.23.0/24