AS4643 203.16.66.0/24 CIDR and IP Range Summary.ASN: 4643 - Optus Customer NetworkHost Count: 254Addressable IPs: 256 203.16.66.0203.16.66.1203.16.66.2203.16.66.3203.16.66.4203.16.66.5203.16.66.6203.16.66.7203.16.66.8203.16.66.9203.16.66.10203.16.66.11203.16.66.12203.16.66.13203.16.66.14203.16.66.15203.16.66.16203.16.66.17203.16.66.18203.16.66.19203.16.66.20203.16.66.21203.16.66.22203.16.66.23203.16.66.24203.16.66.25203.16.66.26203.16.66.27203.16.66.28203.16.66.29203.16.66.30203.16.66.31203.16.66.32203.16.66.33203.16.66.34203.16.66.35203.16.66.36203.16.66.37203.16.66.38203.16.66.39203.16.66.40203.16.66.41203.16.66.42203.16.66.43203.16.66.44203.16.66.45203.16.66.46203.16.66.47203.16.66.48203.16.66.49203.16.66.50203.16.66.51203.16.66.52203.16.66.53203.16.66.54203.16.66.55203.16.66.56203.16.66.57203.16.66.58203.16.66.59203.16.66.60203.16.66.61203.16.66.62203.16.66.63203.16.66.64203.16.66.65203.16.66.66203.16.66.67203.16.66.68203.16.66.69203.16.66.70203.16.66.71203.16.66.72203.16.66.73203.16.66.74203.16.66.75203.16.66.76203.16.66.77203.16.66.78203.16.66.79203.16.66.80203.16.66.81203.16.66.82203.16.66.83203.16.66.84203.16.66.85203.16.66.86203.16.66.87203.16.66.88203.16.66.89203.16.66.90203.16.66.91203.16.66.92203.16.66.93203.16.66.94203.16.66.95203.16.66.96203.16.66.97203.16.66.98203.16.66.99203.16.66.100203.16.66.101203.16.66.102203.16.66.103203.16.66.104203.16.66.105203.16.66.106203.16.66.107203.16.66.108203.16.66.109203.16.66.110203.16.66.111203.16.66.112203.16.66.113203.16.66.114203.16.66.115203.16.66.116203.16.66.117203.16.66.118203.16.66.119203.16.66.120203.16.66.121203.16.66.122203.16.66.123203.16.66.124203.16.66.125203.16.66.126203.16.66.127203.16.66.128203.16.66.129203.16.66.130203.16.66.131203.16.66.132203.16.66.133203.16.66.134203.16.66.135203.16.66.136203.16.66.137203.16.66.138203.16.66.139203.16.66.140203.16.66.141203.16.66.142203.16.66.143203.16.66.144203.16.66.145203.16.66.146203.16.66.147203.16.66.148203.16.66.149203.16.66.150203.16.66.151203.16.66.152203.16.66.153203.16.66.154203.16.66.155203.16.66.156203.16.66.157203.16.66.158203.16.66.159203.16.66.160203.16.66.161203.16.66.162203.16.66.163203.16.66.164203.16.66.165203.16.66.166203.16.66.167203.16.66.168203.16.66.169203.16.66.170203.16.66.171203.16.66.172203.16.66.173203.16.66.174203.16.66.175203.16.66.176203.16.66.177203.16.66.178203.16.66.179203.16.66.180203.16.66.181203.16.66.182203.16.66.183203.16.66.184203.16.66.185203.16.66.186203.16.66.187203.16.66.188203.16.66.189203.16.66.190203.16.66.191203.16.66.192203.16.66.193203.16.66.194203.16.66.195203.16.66.196203.16.66.197203.16.66.198203.16.66.199203.16.66.200203.16.66.201203.16.66.202203.16.66.203203.16.66.204203.16.66.205203.16.66.206203.16.66.207203.16.66.208203.16.66.209203.16.66.210203.16.66.211203.16.66.212203.16.66.213203.16.66.214203.16.66.215203.16.66.216203.16.66.217203.16.66.218203.16.66.219203.16.66.220203.16.66.221203.16.66.222203.16.66.223203.16.66.224203.16.66.225203.16.66.226203.16.66.227203.16.66.228203.16.66.229203.16.66.230203.16.66.231203.16.66.232203.16.66.233203.16.66.234203.16.66.235203.16.66.236203.16.66.237203.16.66.238203.16.66.239203.16.66.240203.16.66.241203.16.66.242203.16.66.243203.16.66.244203.16.66.245203.16.66.246203.16.66.247203.16.66.248203.16.66.249203.16.66.250203.16.66.251203.16.66.252203.16.66.253203.16.66.254203.16.66.255