AS7474 220.101.64.0/21 CIDR and IP Range Summary.ASN: 7474 - SingTel Optus Pty LtdHost Count: 2046Addressable IPs: 2048220.101.64.0/24220.101.65.0/24220.101.66.0/24220.101.67.0/24220.101.68.0/24220.101.69.0/24220.101.70.0/24220.101.71.0/24