If you are using Niconico from outside of Japan, we will send a 2-step verification email (confirmation code) to your email address to prevent illegal logins.
 

■ If you received the confirmation code

When you log in, please enter the 6-digit number (Confirmation code) that was sent to your e-mail address.
 

■ If you do not receive the confirmation code

If you do not receive a confirmation code due to your inability to access your email or for other reasons, please contact us via the "Contact Us" button at the bottom of the page.