How to get access to no-existing tag?

If you create following HTML below:

<table>
<tr>
    <td></td>
    <td>Last1</td>
    <SPAN><FONT>test1</FONT></SPAN>
</tr>
</table>
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and check DOM model you will see that IE(maybe others) create tag with no-name.

Here is link to screenshot Screenshot:

Are there any possibility to get access to this tag or not ?

Your HTML is invalid.
You can only put <td> and <th> elements directly inside <tr>s.

The browser is creating this tag in an attempt to fix your broken markup.

You should correct your HTML.