It's always considered better to host multiple cross linked websites on different Class C IP ranges. It is a nifty tool that checks where the same Class C IP is hosting multiple domains. It will further help you find duplicate IP address and Class C blocks. Simply enter your domain name and hit Submit.
Enter up to 40 Domains (Each Domain must be on separate line)
Class C IP checker tool is an amazing tool developed by Many SEO Tools to help you identify duplicate IP addresses and Class C Blocks. It's always a good idea to host multiple cross linked websites on different Class C IP addresses as it helps with search engine rankings. The tool is very easy to use and completely free of cost.