AS3257 83.245.40.0/21 CIDR and IP Range Summary.ASN: 3257 - GTT Communications Inc.Host Count: 2046Addressable IPs: 204883.245.40.0/2483.245.41.0/2483.245.42.0/2483.245.43.0/2483.245.44.0/2483.245.45.0/2483.245.46.0/2483.245.47.0/24