AS4766 121.131.152.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048121.131.152.0/24121.131.153.0/24121.131.154.0/24121.131.155.0/24121.131.156.0/24121.131.157.0/24121.131.158.0/24121.131.159.0/24