AS4766 203.251.48.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048203.251.48.0/24203.251.49.0/24203.251.50.0/24203.251.51.0/24203.251.52.0/24203.251.53.0/24203.251.54.0/24203.251.55.0/24