AS721 199.208.176.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048199.208.176.0/24199.208.177.0/24199.208.178.0/24199.208.179.0/24199.208.180.0/24199.208.181.0/24199.208.182.0/24199.208.183.0/24