AS4766 211.57.128.0/20 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 4094Addressable IPs: 4096211.57.128.0/24211.57.129.0/24211.57.130.0/24211.57.131.0/24211.57.132.0/24211.57.133.0/24211.57.134.0/24211.57.135.0/24211.57.136.0/24211.57.137.0/24211.57.138.0/24211.57.139.0/24211.57.140.0/24211.57.141.0/24211.57.142.0/24211.57.143.0/24