Server Not Reached error from production site

I got error from my production server
This site can’t be reached.
the point is this error raised from production only into my system not others.
if any other user appart from me use the production URL. it works. but not on my system.
Is there any dependency issue in my system?. because sometime it works and sometime it did not.
Please Help me If someone face this issue before anytime.

You haven’t given enough info for anyone to be able to help you