AS4766 121.135.128.0/20 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 4094Addressable IPs: 4096121.135.128.0/24121.135.129.0/24121.135.130.0/24121.135.131.0/24121.135.132.0/24121.135.133.0/24121.135.134.0/24121.135.135.0/24121.135.136.0/24121.135.137.0/24121.135.138.0/24121.135.139.0/24121.135.140.0/24121.135.141.0/24121.135.142.0/24121.135.143.0/24