At around 10:25 the Internet connection went down. This was due to a fault in the provider's network. They were working on fixing the issue immediately, Internet connection was restored at 10:40.
There still seems to be an impairment especially for reaching content from the americas.
The interruption is in the DFN X-Win network, our connection itself is working fine, but upstream we can reach parts of the Internet, only.
Internet access seems to be working without problems again.
Reason for the outage was a broken line card at a DFN site in Hannover.