Do we know what happens when he tries? Is it simply a timeout or is there an error message returned in the browser?
Have him do the following and report back with the results of each:
1. Google "what's my IP" and tell us the xxx.xxx.xxx.xxx address
2. Do a nslookup or ping www.whatsbestforum.com
3. Ping 104.192.220.136
4. Try http://104.192.220.136/ in a browser
5. Try http://www.whatsbestforum.com in a browser he's never used before
Have him do the following and report back with the results of each:
1. Google "what's my IP" and tell us the xxx.xxx.xxx.xxx address
2. Do a nslookup or ping www.whatsbestforum.com
3. Ping 104.192.220.136
4. Try http://104.192.220.136/ in a browser
5. Try http://www.whatsbestforum.com in a browser he's never used before