$ whois 4.3.2.1
    Level 3 Communications, Inc. LVLT-ORG-4-8 (NET-4-0-0-0-1)
                                      4.0.0.0 - 4.255.255.255
    Google Incorporated LVLT-GOOGL-1-4-3-2 (NET-4-3-2-0-1)
                                      4.3.2.0 - 4.3.2.255