AS3257 83.148.152.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 204883.148.152.0/2483.148.153.0/2483.148.154.0/2483.148.155.0/2483.148.156.0/2483.148.157.0/2483.148.158.0/2483.148.159.0/24