AS39 138.145.240.0/21 CIDR and IP Range Summary.ASN: 39 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048138.145.240.0/24138.145.241.0/24138.145.242.0/24138.145.243.0/24138.145.244.0/24138.145.245.0/24138.145.246.0/24138.145.247.0/24