The scheduled maintenance has been completed.

Scheduled maintenance is currently in progress. We will provide updates as necessary.

Denic, The .de registry, will be undergoing scheduled maintenance.

During this scheduled system maintenance, the following services may be unavailable:

Availability Checks
Whois Services
Domain Purchases
Domain Renewals
Domain Updates

For a list of affected TLD's, please look the registry up in the following spreadsheet:
http://enom.help/chart