AS721 199.209.208.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048199.209.208.0/24199.209.209.0/24199.209.210.0/24199.209.211.0/24199.209.212.0/24199.209.213.0/24199.209.214.0/24199.209.215.0/24