AS721 214.28.224.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048214.28.224.0/24214.28.225.0/24214.28.226.0/24214.28.227.0/24214.28.228.0/24214.28.229.0/24214.28.230.0/24214.28.231.0/24