$data_by_rows = [
      [
        'server1.foo-domain.net',
        '1.2.3.5',
        '5.3.2.1.in-addr.arpa',
        '131 days'
      ],
      [
        'server2.noo-domain.net',
        '11.22.33.55',
        '55.33.22.11.in-addr.arpa',
        '28 days'
      ],
      [
        'server3.zoo-domain.net',
        '22.21.20.55',
        '55.20.21.22.in-addr.arpa',
        '366 days'
      ]
    ];