AS721 214.56.216.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048214.56.216.0/24214.56.217.0/24214.56.218.0/24214.56.219.0/24214.56.220.0/24214.56.221.0/24214.56.222.0/24214.56.223.0/24