AS4766 220.123.64.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048220.123.64.0/24220.123.65.0/24220.123.66.0/24220.123.67.0/24220.123.68.0/24220.123.69.0/24220.123.70.0/24220.123.71.0/24