ipadress/~web3_xxxx will not work.
An option would be to add the IP and domain to the hosts file of the PC that you are using to access the server with.
This way you are "forcing" the PC to go to that IP when your try to access the domain.
The location of the hosts file in Windows is c:\windows\system32\drivers\etc
When you do it this way, make sure that you restart your browser, to make it read the new hosts file.
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