AS721 215.65.0.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048215.65.0.0/24215.65.1.0/24215.65.2.0/24215.65.3.0/24215.65.4.0/24215.65.5.0/24215.65.6.0/24215.65.7.0/24