Do I need more than one dedicated IP address for my VPS?
The quick answer is no. One dedicated IP address for your VPS works for:
- Multiple SSL certificates. Your server supports Server Name Indication (SNI), which means you don't need one dedicated IP address for each SSL certificate on the server.
- Search engine optimization (SEO). A single IP address doesn't affect the SEO for any of the websites on your server. Just make sure each site has its own directory on the server.
- Site previews. Your customers can preview their websites using the same IP address as long as you've configured cPanel or Plesk properly.
- Here's the main Help page for VPS and dedicated servers.