AS4721 219.124.224.0/20 CIDR and IP Range Summary.ASN: 4721 - JCN JCOM Co. Ltd.Host Count: 4094Addressable IPs: 4096219.124.224.0/24219.124.225.0/24219.124.226.0/24219.124.227.0/24219.124.228.0/24219.124.229.0/24219.124.230.0/24219.124.231.0/24219.124.232.0/24219.124.233.0/24219.124.234.0/24219.124.235.0/24219.124.236.0/24219.124.237.0/24219.124.238.0/24219.124.239.0/24