AS17647 203.9.16.0/21 CIDR and IP Range Summary.ASN: 17647 - CSC AustraliaHost Count: 2046Addressable IPs: 2048203.9.16.0/24203.9.17.0/24203.9.18.0/24203.9.19.0/24203.9.20.0/24203.9.21.0/24203.9.22.0/24203.9.23.0/24