There are several potential reasons why a login attempt may fail:

You entered an e-mail address instead of the domain name.

You cannot log in with your e-mail address. Please enter one of the domains concerned that are listed in the DENIC TRANSIT letter.

The domain is no longer in TRANSIT.

The domain was already transferred to another provider or it was deleted. Thus, a login is no longer possible.

You have already complied with our demand for payment.

Once you have made a payment, you can no longer log in to the Service Center. Your domain is now administered by our DENICdirect service.

If the TRANSIT letter lists another domain for which you have not yet taken any action, you can log in with the name of that domain until the specified deadline.

If you continue to have problems logging in to the TRANSIT Service Center or if you have any questions on the DENICdirect service, do not hesitate to contact our Customer Support.