Well, what is your structure like? I mean the IP goes to the server, not to the specific root directory. You'd have to do something like:
23.123.123.255/sitename/public_html/
or whatever. Use the FTP path info in the URL. So if your FTP path to visible content is:
/eyesbryte/html/www
then your URL would be:
23.123.123.255/eyesbryte/html/www
Hope that makes sense.