What Web Address does Solidworks Use for Checking Updates & Liscenses?

The company webfilter is blocking solidworks from checking for updates and also validating my liscense at this point.

I have added 'solidworks.com'  & 'im.solidworks.com'  to the whitelist but still no joy....

Both connect fine when i log on as administrator which is exempt from the webfilter.

Any Ideas would be appreciated...