Stumped on something is Sarg Reports

[dgall]

In my sarg reports for one of My computers one website az29176.vo.msecnd.net keeps popping up that uses a lot of bandwidth at times I have had no luck finding out what it is. Anyone seen this before ? First I I am worried it may be a malware second I have facebook and all social media blocked and I am thinking maybe the person at this computer might be surfing facebook using some kind of anonymous website.

[jahonix]

Would you have tried finding out something about that domain you would have found this:
http://whois.domaintools.com/msecnd.net
Introducing the Windows Azure Content Delivery Network

Don't over react, always do your job first and evaluate what you see.

[KOM]

Yeah, stuff like that is almost always a CDN of some sort.