AS721 144.109.40.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048144.109.40.0/24144.109.41.0/24144.109.42.0/24144.109.43.0/24144.109.44.0/24144.109.45.0/24144.109.46.0/24144.109.47.0/24