AS721 143.74.200.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048143.74.200.0/24143.74.201.0/24143.74.202.0/24143.74.203.0/24143.74.204.0/24143.74.205.0/24143.74.206.0/24143.74.207.0/24