AS721 205.98.56.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048205.98.56.0/24205.98.57.0/24205.98.58.0/24205.98.59.0/24205.98.60.0/24205.98.61.0/24205.98.62.0/24205.98.63.0/24