AS6939 216.66.72.0/21 CIDR and IP Range Summary.ASN: 6939 - Hurricane Electric LLCHost Count: 2046Addressable IPs: 2048216.66.72.0/24216.66.73.0/24216.66.74.0/24216.66.75.0/24216.66.76.0/24216.66.77.0/24216.66.78.0/24216.66.79.0/24