AS749 6.51.240.0/21 CIDR and IP Range Summary.ASN: 749 - DoD Network Information CenterHost Count: 2046Addressable IPs: 20486.51.240.0/246.51.241.0/246.51.242.0/246.51.243.0/246.51.244.0/246.51.245.0/246.51.246.0/246.51.247.0/24