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What is an authorization code?
An auth code (short for authorization code) is a unique string of random letters and numbers assigned to a domain. When you transfer a domain to another registrar, its auth code is required to start the transfer. This helps prevent domain hijackers from transferring a domain without the owner's permission. Authorization codes must be retrieved from the current domain registrar where the domain is registered. Follow these instructions to find your auth code in your Dynadot account.
Auth codes are also sometimes referred to as EPP codes or authinfo codes.