AS4766 211.253.40.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048211.253.40.0/24211.253.41.0/24211.253.42.0/24211.253.43.0/24211.253.44.0/24211.253.45.0/24211.253.46.0/24211.253.47.0/24