AS4766 221.147.104.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048221.147.104.0/24221.147.105.0/24221.147.106.0/24221.147.107.0/24221.147.108.0/24221.147.109.0/24221.147.110.0/24221.147.111.0/24