AS4766 220.88.144.0/21 CIDR and IP Range Summary.ASN: 4766 - Korea TelecomHost Count: 2046Addressable IPs: 2048220.88.144.0/24220.88.145.0/24220.88.146.0/24220.88.147.0/24220.88.148.0/24220.88.149.0/24220.88.150.0/24220.88.151.0/24