AS4766 220.83.144.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048220.83.144.0/24220.83.145.0/24220.83.146.0/24220.83.147.0/24220.83.148.0/24220.83.149.0/24220.83.150.0/24220.83.151.0/24