AS721 143.74.224.0/20 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 4094Addressable IPs: 4096143.74.224.0/24143.74.225.0/24143.74.226.0/24143.74.227.0/24143.74.228.0/24143.74.229.0/24143.74.230.0/24143.74.231.0/24143.74.232.0/24143.74.233.0/24143.74.234.0/24143.74.235.0/24143.74.236.0/24143.74.237.0/24143.74.238.0/24143.74.239.0/24