AS1656 166.21.72.0/21 CIDR and IP Range Summary.ASN: 1656 - Lockheed Martin CorporationHost Count: 2046Addressable IPs: 2048166.21.72.0/24166.21.73.0/24166.21.74.0/24166.21.75.0/24166.21.76.0/24166.21.77.0/24166.21.78.0/24166.21.79.0/24