AS721 199.211.200.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048199.211.200.0/24199.211.201.0/24199.211.202.0/24199.211.203.0/24199.211.204.0/24199.211.205.0/24199.211.206.0/24199.211.207.0/24