AS3257 195.21.48.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 2048195.21.48.0/24195.21.49.0/24195.21.50.0/24195.21.51.0/24195.21.52.0/24195.21.53.0/24195.21.54.0/24195.21.55.0/24