The Auth Code (Authentication ID) for your domain name is typically used to transfer the domain between registrars. 1st Domains also uses this code to verify ownership for other actions, such as changes in ownership. The Auth Code is sent to the registrant's contact email for the domain name. Auto Codes expire within 30 days, so if you have exceed that amount you will have to request a new Auth code.

However, as these expire after 30 days, if you need to request a new Auth Code for your domain name, please follow the steps below:

1. Login to your 1st Domains account at https://www.1stdomains.co.nz/client/login.php.
2. Once logged in, click 'Manage Domains & Services'.
3. Click on the domain name you would like to request the Auth Code for.
4. Next, click the 'Request Key' link under Authorisation Key (UDAI/EPP), and the Auth Code will be emailed to the registrant contact.