AS4766 203.234.136.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048203.234.136.0/24203.234.137.0/24203.234.138.0/24203.234.139.0/24203.234.140.0/24203.234.141.0/24203.234.142.0/24203.234.143.0/24