AS4643 203.13.143.0/24 CIDR and IP Range Summary.ASN: 4643 - Optus Customer NetworkHost Count: 254Addressable IPs: 256 203.13.143.0203.13.143.1203.13.143.2203.13.143.3203.13.143.4203.13.143.5203.13.143.6203.13.143.7203.13.143.8203.13.143.9203.13.143.10203.13.143.11203.13.143.12203.13.143.13203.13.143.14203.13.143.15203.13.143.16203.13.143.17203.13.143.18203.13.143.19203.13.143.20203.13.143.21203.13.143.22203.13.143.23203.13.143.24203.13.143.25203.13.143.26203.13.143.27203.13.143.28203.13.143.29203.13.143.30203.13.143.31203.13.143.32203.13.143.33203.13.143.34203.13.143.35203.13.143.36203.13.143.37203.13.143.38203.13.143.39203.13.143.40203.13.143.41203.13.143.42203.13.143.43203.13.143.44203.13.143.45203.13.143.46203.13.143.47203.13.143.48203.13.143.49203.13.143.50203.13.143.51203.13.143.52203.13.143.53203.13.143.54203.13.143.55203.13.143.56203.13.143.57203.13.143.58203.13.143.59203.13.143.60203.13.143.61203.13.143.62203.13.143.63203.13.143.64203.13.143.65203.13.143.66203.13.143.67203.13.143.68203.13.143.69203.13.143.70203.13.143.71203.13.143.72203.13.143.73203.13.143.74203.13.143.75203.13.143.76203.13.143.77203.13.143.78203.13.143.79203.13.143.80203.13.143.81203.13.143.82203.13.143.83203.13.143.84203.13.143.85203.13.143.86203.13.143.87203.13.143.88203.13.143.89203.13.143.90203.13.143.91203.13.143.92203.13.143.93203.13.143.94203.13.143.95203.13.143.96203.13.143.97203.13.143.98203.13.143.99203.13.143.100203.13.143.101203.13.143.102203.13.143.103203.13.143.104203.13.143.105203.13.143.106203.13.143.107203.13.143.108203.13.143.109203.13.143.110203.13.143.111203.13.143.112203.13.143.113203.13.143.114203.13.143.115203.13.143.116203.13.143.117203.13.143.118203.13.143.119203.13.143.120203.13.143.121203.13.143.122203.13.143.123203.13.143.124203.13.143.125203.13.143.126203.13.143.127203.13.143.128203.13.143.129203.13.143.130203.13.143.131203.13.143.132203.13.143.133203.13.143.134203.13.143.135203.13.143.136203.13.143.137203.13.143.138203.13.143.139203.13.143.140203.13.143.141203.13.143.142203.13.143.143203.13.143.144203.13.143.145203.13.143.146203.13.143.147203.13.143.148203.13.143.149203.13.143.150203.13.143.151203.13.143.152203.13.143.153203.13.143.154203.13.143.155203.13.143.156203.13.143.157203.13.143.158203.13.143.159203.13.143.160203.13.143.161203.13.143.162203.13.143.163203.13.143.164203.13.143.165203.13.143.166203.13.143.167203.13.143.168203.13.143.169203.13.143.170203.13.143.171203.13.143.172203.13.143.173203.13.143.174203.13.143.175203.13.143.176203.13.143.177203.13.143.178203.13.143.179203.13.143.180203.13.143.181203.13.143.182203.13.143.183203.13.143.184203.13.143.185203.13.143.186203.13.143.187203.13.143.188203.13.143.189203.13.143.190203.13.143.191203.13.143.192203.13.143.193203.13.143.194203.13.143.195203.13.143.196203.13.143.197203.13.143.198203.13.143.199203.13.143.200203.13.143.201203.13.143.202203.13.143.203203.13.143.204203.13.143.205203.13.143.206203.13.143.207203.13.143.208203.13.143.209203.13.143.210203.13.143.211203.13.143.212203.13.143.213203.13.143.214203.13.143.215203.13.143.216203.13.143.217203.13.143.218203.13.143.219203.13.143.220203.13.143.221203.13.143.222203.13.143.223203.13.143.224203.13.143.225203.13.143.226203.13.143.227203.13.143.228203.13.143.229203.13.143.230203.13.143.231203.13.143.232203.13.143.233203.13.143.234203.13.143.235203.13.143.236203.13.143.237203.13.143.238203.13.143.239203.13.143.240203.13.143.241203.13.143.242203.13.143.243203.13.143.244203.13.143.245203.13.143.246203.13.143.247203.13.143.248203.13.143.249203.13.143.250203.13.143.251203.13.143.252203.13.143.253203.13.143.254203.13.143.255