AS4766 121.163.128.0/19 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 8190Addressable IPs: 8192121.163.128.0/24121.163.129.0/24121.163.130.0/24121.163.131.0/24121.163.132.0/24121.163.133.0/24121.163.134.0/24121.163.135.0/24121.163.136.0/24121.163.137.0/24121.163.138.0/24121.163.139.0/24121.163.140.0/24121.163.141.0/24121.163.142.0/24121.163.143.0/24121.163.144.0/24121.163.145.0/24121.163.146.0/24121.163.147.0/24121.163.148.0/24121.163.149.0/24121.163.150.0/24121.163.151.0/24121.163.152.0/24121.163.153.0/24121.163.154.0/24121.163.155.0/24121.163.156.0/24121.163.157.0/24121.163.158.0/24121.163.159.0/24