AS4643 203.29.192.0/21 CIDR and IP Range Summary.ASN: 4643 - Optus Customer NetworkHost Count: 2046Addressable IPs: 2048203.29.192.0/24203.29.193.0/24203.29.194.0/24203.29.195.0/24203.29.196.0/24203.29.197.0/24203.29.198.0/24203.29.199.0/24