AS24315 203.18.248.0/21 CIDR and IP Range Summary.ASN: 24315 - Gateway Internet. Transit As Internet Service Provider Bunbury AustraliaHost Count: 2046Addressable IPs: 2048203.18.248.0/24203.18.249.0/24203.18.250.0/24203.18.251.0/24203.18.252.0/24203.18.253.0/24203.18.254.0/24203.18.255.0/24