AS4643 161.43.0.0/18 CIDR and IP Range Summary.ASN: 4643 - Optus Customer NetworkHost Count: 16382Addressable IPs: 16384161.43.0.0/24161.43.1.0/24161.43.2.0/24161.43.3.0/24161.43.4.0/24161.43.5.0/24161.43.6.0/24161.43.7.0/24161.43.8.0/24161.43.9.0/24161.43.10.0/24161.43.11.0/24161.43.12.0/24161.43.13.0/24161.43.14.0/24161.43.15.0/24161.43.16.0/24161.43.17.0/24161.43.18.0/24161.43.19.0/24161.43.20.0/24161.43.21.0/24161.43.22.0/24161.43.23.0/24161.43.24.0/24161.43.25.0/24161.43.26.0/24161.43.27.0/24161.43.28.0/24161.43.29.0/24161.43.30.0/24161.43.31.0/24161.43.32.0/24161.43.33.0/24161.43.34.0/24161.43.35.0/24161.43.36.0/24161.43.37.0/24161.43.38.0/24161.43.39.0/24161.43.40.0/24161.43.41.0/24161.43.42.0/24161.43.43.0/24161.43.44.0/24161.43.45.0/24161.43.46.0/24161.43.47.0/24161.43.48.0/24161.43.49.0/24161.43.50.0/24161.43.51.0/24161.43.52.0/24161.43.53.0/24161.43.54.0/24161.43.55.0/24161.43.56.0/24161.43.57.0/24161.43.58.0/24161.43.59.0/24161.43.60.0/24161.43.61.0/24161.43.62.0/24161.43.63.0/24