AS4643 124.19.104.0/21 CIDR and IP Range Summary.ASN: 4643 - Optus Customer NetworkHost Count: 2046Addressable IPs: 2048124.19.104.0/24124.19.105.0/24124.19.106.0/24124.19.107.0/24124.19.108.0/24124.19.109.0/24124.19.110.0/24124.19.111.0/24