AS721 205.115.56.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048205.115.56.0/24205.115.57.0/24205.115.58.0/24205.115.59.0/24205.115.60.0/24205.115.61.0/24205.115.62.0/24205.115.63.0/24