AS721 199.211.176.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048199.211.176.0/24199.211.177.0/24199.211.178.0/24199.211.179.0/24199.211.180.0/24199.211.181.0/24199.211.182.0/24199.211.183.0/24