how can I prove that the cookie is saved in ie9 (other than seeing the cookie increment with page refresh)

http://hrblock.host22.com/cookie.php

<?php

    if (!isset($_COOKIE['increment_by_1_this_number'])) $_COOKIE['increment_by_1_this_number'] = 0;
    $visits = $_COOKIE['increment_by_1_this_number'] + 1;
    setcookie('increment_by_1_this_number',$visits,time()+300000);

    echo '<pre>';
    print_r($_COOKIE);
    echo '</pre>';

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I can see this cookie with chrome and firefox cookie viewer

I am testing with ie9 and can not find that this cookie exists


I think the cookie exists because cookie increments

but when I view
http://www.nirsoft.net/utils/iecookies.html

the cookie is not there

how can I prove that the cookie is saved in ie9 (other than seeing the cookie increment with page refresh)