To retrieve your US Domain Center username when forgotten but you remember your password, follow these steps:

1. Navigate to the Retrieve Username page.
2. Input the Email address linked to your account, and then proceed by selecting Continue. Complete any security challenge provided, if applicable.
3. If you possess a US Domain Center domain name, input any Domain Name associated with your account (e.g., coolexample.com) and click Filter. We will dispatch a one-time-use PIN to your email address.
4. Enter the PIN under 6-digit Code, and then select Verify Code. Your username will be displayed.