AS4766 121.131.200.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048121.131.200.0/24121.131.201.0/24121.131.202.0/24121.131.203.0/24121.131.204.0/24121.131.205.0/24121.131.206.0/24121.131.207.0/24