AS721 143.76.160.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048143.76.160.0/24143.76.161.0/24143.76.162.0/24143.76.163.0/24143.76.164.0/24143.76.165.0/24143.76.166.0/24143.76.167.0/24