AS9318 203.253.16.0/21 CIDR and IP Range Summary.ASN: 9318 - SK Broadband Co LtdHost Count: 2046Addressable IPs: 2048203.253.16.0/24203.253.17.0/24203.253.18.0/24203.253.19.0/24203.253.20.0/24203.253.21.0/24203.253.22.0/24203.253.23.0/24