AS135064 203.15.184.0/21 CIDR and IP Range Summary.ASN: 135064 - Rio Tinto IS&THost Count: 2046Addressable IPs: 2048203.15.184.0/24203.15.185.0/24203.15.186.0/24203.15.187.0/24203.15.188.0/24203.15.189.0/24203.15.190.0/24203.15.191.0/24