AS4766 211.251.136.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048211.251.136.0/24211.251.137.0/24211.251.138.0/24211.251.139.0/24211.251.140.0/24211.251.141.0/24211.251.142.0/24211.251.143.0/24