AS4766 121.190.160.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048121.190.160.0/24121.190.161.0/24121.190.162.0/24121.190.163.0/24121.190.164.0/24121.190.165.0/24121.190.166.0/24121.190.167.0/24