AS721 214.15.152.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048214.15.152.0/24214.15.153.0/24214.15.154.0/24214.15.155.0/24214.15.156.0/24214.15.157.0/24214.15.158.0/24214.15.159.0/24