We do not generally have a problem with hosts using the name cPanel in their URLs. Please keep in mind our Trademark Usage Policy at http://www.cpanel.net/trademarkup.htm. While I cannot give you a specific yes or no as I have not seen the content of the site, generally, if you are using cPanel to refer to our products and not as part of a brand or product name, there should not be any issues. If you have any questions about specific content or usage, feel free to ask them or open a ticket with us.
You can't trademark a number, and you can't trademark an abbreviation either.Serial Number:
CPANEL SERVER SUITE
all are live trademarks
You can't trademark a number, and you can't trademark an abbreviation either.