AS668 163.249.56.0/21 CIDR and IP Range Summary.ASN: 668 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048163.249.56.0/24163.249.57.0/24163.249.58.0/24163.249.59.0/24163.249.60.0/24163.249.61.0/24163.249.62.0/24163.249.63.0/24