AS6939 216.66.56.0/21 CIDR and IP Range Summary.ASN: 6939 - Hurricane Electric LLCHost Count: 2046Addressable IPs: 2048216.66.56.0/24216.66.57.0/24216.66.58.0/24216.66.59.0/24216.66.60.0/24216.66.61.0/24216.66.62.0/24216.66.63.0/24