What name servers do I use for add-on domain?

[myhostingplans68]

Please let me know where I can find the name servers to use for an add-on domain. I do not find this info in the welcome email nor on the cpanel, where else should I be looking?

 

[calistoy]

The nameservers are:

ns1.x10hosting.com
ns2.x10hosting.com