AS4766 220.71.64.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048220.71.64.0/24220.71.65.0/24220.71.66.0/24220.71.67.0/24220.71.68.0/24220.71.69.0/24220.71.70.0/24220.71.71.0/24