AS721 143.86.224.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048143.86.224.0/24143.86.225.0/24143.86.226.0/24143.86.227.0/24143.86.228.0/24143.86.229.0/24143.86.230.0/24143.86.231.0/24