The complainant owns the trademark T-Online, and wanted to get the d-online.com back. Was it confusingly similar?
"The Panel realizes that the letter 'd', is relatively similar phonetically to the letter 't' in the English and German languages. The sound of 'd' is more similar to the sound of 't' than the sound of most of the other letters that form part of the domain names mentioned above. Visually there is however no particular similarity between the two letters, and the Panel thus finds that there is no extraordinary risk of confusing these two letters when used in domain names."
What an interesting statement! In the internet world, which is case sensitive, the arbiter takes into account the visual difference between two single letters. There is a difference between domain names law and dratemarks, oup, trademarks law!