1. Log into your cPanel account.
2. click on “Subdomains” Icon, In the “Domains” section.


3. Beneath the “Modify a Subdomain” list you can see a list of subdomains.

4. Press the “Remove” option in the “Actions” tab.


5. A warning message will be displayed that you are removing a “subdomain.example.com”. You will need to just hit on the “Delete Subdomain” button to delete your subdomain forever.