AS17816 219.238.224.0/21 CIDR and IP Range Summary.ASN: 17816 - China UnicomHost Count: 2046Addressable IPs: 2048219.238.224.0/24219.238.225.0/24219.238.226.0/24219.238.227.0/24219.238.228.0/24219.238.229.0/24219.238.230.0/24219.238.231.0/24