AS3257 212.56.15.152/29 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 6Addressable IPs: 8 212.56.15.153212.56.15.154212.56.15.155212.56.15.156212.56.15.157212.56.15.158212.56.15.159212.56.15.160