ds.serving-sys.com - what is it?

Hello!

I downloaded DirectX 8.1:
http://www.microsoft.com/downloads/...FamilyID=7f54ebd3-00d1-47bc-81db-3157fba4c3a7

and DirectX 9c:
http://www.microsoft.com/downloads/...FamilyID=2c40a7a5-7742-44d2-9f5c-420815448ea4

When I want the properties of these files (DX81NTeng.exe, directx_9c_Dec04sdk_redist.exe) check the digital signature, the system tries to connect to strange server ds.serving-sys.com:
http://img6.imageshack.us/img6/4357/image01nm.jpg

http://www.mywot.com/pl/scorecard/ds.serving-sys.com

Code:

Remote Name :		ds.serving-sys.com
Remote Address :	217.153.56.86
Remote Port : 		80 (HTTP - World Wide Web)

This happens in Windows 2000 sp4.