AS721 55.209.208.0/20 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 4094Addressable IPs: 409655.209.208.0/2455.209.209.0/2455.209.210.0/2455.209.211.0/2455.209.212.0/2455.209.213.0/2455.209.214.0/2455.209.215.0/2455.209.216.0/2455.209.217.0/2455.209.218.0/2455.209.219.0/2455.209.220.0/2455.209.221.0/2455.209.222.0/2455.209.223.0/24