as a security measure to prevent users from attempting domain hijacking - x10hosting has changed the requirements for free-hosting accounts - you need to set the DNS (Domain Name System) [ NS ] records (for your domain) to x10hosting's nameservers [ ns1.x10hosting.com ] and [ ns2.x10hosting.com ] for all [ addon ] or [ parked ] domains - instead of DNS [ A ] record - before you can add them in cPanel as an addon or parked domain