AS3257 173.205.8.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 2048173.205.8.0/24173.205.9.0/24173.205.10.0/24173.205.11.0/24173.205.12.0/24173.205.13.0/24173.205.14.0/24173.205.15.0/24