http://www.gametracker.com/server_info/175.113.171.133:27015/
It's not tracked. I rename my server to "히스맨의 머더한 머더서버" and i think it's problem.
Can you solve this problem??

Gametracker does not use the server name for tracking purposes.

General connection issues, which also may affect scanning;
http://www.gametracker.com/forums/forum.php?site=1&thread=108248

Some servers will stop reporting correctly when there are no players on line. Try keeping at least one player on the server for a couple of hours to see if the player count graph returns.

Edit:
I note also that your server has been off line for nearly 4 hours.
Off line servers will stop showing results on the graphs until they are back on line and able to be scanned.