AS721 138.167.192.0/21 CIDR and IP Range Summary.ASN: 721 - DoD Network Information CenterHost Count: 2046Addressable IPs: 2048138.167.192.0/24138.167.193.0/24138.167.194.0/24138.167.195.0/24138.167.196.0/24138.167.197.0/24138.167.198.0/24138.167.199.0/24