A unique alphanumeric string (typically starting with 1HF ) that identifies the specific software license.
Authentication codes for are unique, one-time-use security strings required to finalize the activation of the software on a specific machine. Unlike a standard serial number, which identifies your product license, the authentication code is generated during the registration process to link that license to your hardware. Official Methods for Obtaining Codes Sony Vegas Pro 11 Authentication Code List
In the end, while the search for a "free code list" is understandable, the only real solutions are either to find a legitimate way to access the software, or to move on to the excellent free and modern alternatives available today. The potential cost to your computer's security and your personal data is simply too high a price to pay. A unique alphanumeric string (typically starting with 1HF