In cPanel, cPanel users can access the cPanel interface via port:2083 or using a service domain such as cpanel.domain_name.com to manage most aspects of their website.
Only the server root user or the reseller who owns the cPanel account can specify each cPanel account’s username and privileges when setting up the account the first time.
As a rule, each cPanel username must a unique username that contains 16 characters or fewer and doesn’t start with a number or the string test that the system uses to identify each account.
Now, your cPanel username is not the email you used to sign up for the hosting account.
Most of the time, your cPanel username will be derived from the domain name that was used to order the web hosting account.
So if the domain name is “sundomain.com”, the cPanel username might likely be something like “sundoma” or even “sundomain“.
It is this name that you will need to type in and access your cPanel control panel.
