AS18220 203.11.16.0/20 CIDR and IP Range Summary.ASN: 18220 - Australian Defence OrganisationHost Count: 4094Addressable IPs: 4096203.11.16.0/24203.11.17.0/24203.11.18.0/24203.11.19.0/24203.11.20.0/24203.11.21.0/24203.11.22.0/24203.11.23.0/24203.11.24.0/24203.11.25.0/24203.11.26.0/24203.11.27.0/24203.11.28.0/24203.11.29.0/24203.11.30.0/24203.11.31.0/24