AS721 143.73.160.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048143.73.160.0/24143.73.161.0/24143.73.162.0/24143.73.163.0/24143.73.164.0/24143.73.165.0/24143.73.166.0/24143.73.167.0/24