IP validation in javascript / html

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$('#ip').mask('0ZZ.0ZZ.0ZZ.0ZZ', {
  translation: {
    'Z': {
      pattern: /[0-9]/, optional: true
    }
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script><tr><tdalign="center" font-size="50"> 
            <font size="5"><i><b>Informe o valor do IP: </b></i></font>
        </td>
     </tr>
     <tr>
        <td align="center">
            <input type="text" id="ip" name="ip" value="">
        </td>
    </tr>