AS721 143.76.16.0/20 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 4094Addressable IPs: 4096143.76.16.0/24143.76.17.0/24143.76.18.0/24143.76.19.0/24143.76.20.0/24143.76.21.0/24143.76.22.0/24143.76.23.0/24143.76.24.0/24143.76.25.0/24143.76.26.0/24143.76.27.0/24143.76.28.0/24143.76.29.0/24143.76.30.0/24143.76.31.0/24