.de
DENIC ( the Network Information Centre responsible for . de domains ) does not require specific second-level domains , and there are no official ccSLDs under . de ccTLD , as it is the case with the . uk domain range which until 2014 required . co . uk domain for example . 
<triplet> .de <subj> DENIC <obj> maintained by <triplet> .de <subj> DENIC <obj> maintained by