AS4766 221.146.200.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048221.146.200.0/24221.146.201.0/24221.146.202.0/24221.146.203.0/24221.146.204.0/24221.146.205.0/24221.146.206.0/24221.146.207.0/24