Many websites did not work last night. Users could not open these sites. All sites had the ending .de. The ending .de stands for Germany.
A company manages these site names. The company is called Denic. They had an error in the DNS-Service. The DNS-Service is like a phone book for the internet.
It turns names into numbers. Computers need these numbers to find a site. Without this service the sites stay empty. Denic fixed the error during the night.
