AS3257 195.172.216.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 2048195.172.216.0/24195.172.217.0/24195.172.218.0/24195.172.219.0/24195.172.220.0/24195.172.221.0/24195.172.222.0/24195.172.223.0/24