AS1656 166.21.136.0/21 CIDR and IP Range Summary.ASN: 1656 - Lockheed Martin CorporationHost Count: 2046Addressable IPs: 2048166.21.136.0/24166.21.137.0/24166.21.138.0/24166.21.139.0/24166.21.140.0/24166.21.141.0/24166.21.142.0/24166.21.143.0/24