Question: Curious about mapleprimes.com

What is the result of this system command:
tracert -d www.mapleprimes.com
  1    local networking 1
  2    local networking 2
  3    my ISP 1
  4    my ISP 2
  5    my ISP 3
  6    my ISP 4
  7    32 ms    34 ms    29 ms  67.43.129.248
  8    29 ms    29 ms    29 ms  67.43.129.243
  9    36 ms    36 ms    34 ms  67.43.129.26
 10     *        *        *     Request timed out.
 11     *        *        *     Request timed out.
 12     *        *        *     Request timed out.
 13     *        *        *     Request timed out.
 14     *        *        *     Request timed out.
 15     *        *        *     Request timed out.
 16     *        *        *     Request timed out.
 17     *        *        *     Request timed out.
 18     *        *        *     Request timed out.
 19     *        *        *     Request timed out.
 20     *        *        *     Request timed out.
 21     *        *        *     Request timed out.
 22     *        *        *     Request timed out.
 23     *        *        *     Request timed out.
 24     *        *        *     Request timed out.
 25     *        *        *     Request timed out.
 26     *        *        *     Request timed out.
 27     *        *        *     Request timed out.
 28     *        *        *     Request timed out.
 29     *        *        *     Request timed out.
 30     *        *        *     Request timed out.

This is a bit long. What is the explanation here?