AS17621 220.203.224.0/19 CIDR and IP Range Summary.ASN: 17621 - China Unicom Shanghai NetworkHost Count: 8190Addressable IPs: 8192220.203.224.0/24220.203.225.0/24220.203.226.0/24220.203.227.0/24220.203.228.0/24220.203.229.0/24220.203.230.0/24220.203.231.0/24220.203.232.0/24220.203.233.0/24220.203.234.0/24220.203.235.0/24220.203.236.0/24220.203.237.0/24220.203.238.0/24220.203.239.0/24220.203.240.0/24220.203.241.0/24220.203.242.0/24220.203.243.0/24220.203.244.0/24220.203.245.0/24220.203.246.0/24220.203.247.0/24220.203.248.0/24220.203.249.0/24220.203.250.0/24220.203.251.0/24220.203.252.0/24220.203.253.0/24220.203.254.0/24220.203.255.0/24