AS4766 211.57.144.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048211.57.144.0/24211.57.145.0/24211.57.146.0/24211.57.147.0/24211.57.148.0/24211.57.149.0/24211.57.150.0/24211.57.151.0/24