AS39 131.81.176.0/21 CIDR and IP Range Summary.ASN: 39 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048131.81.176.0/24131.81.177.0/24131.81.178.0/24131.81.179.0/24131.81.180.0/24131.81.181.0/24131.81.182.0/24131.81.183.0/24