AS3257 86.53.240.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 204886.53.240.0/2486.53.241.0/2486.53.242.0/2486.53.243.0/2486.53.244.0/2486.53.245.0/2486.53.246.0/2486.53.247.0/24