404. That’s an error.
The requested URL /_/+1/confirm?hl=de&url=http%3A%2F%2Fwww.spiegel.de%2Fnetzwelt%2Fnetzpolitik%2Fa-711932.html&title=Internetsperren%3A%20Erfolge%20im%20Kampf%20gegen%20Kinderpornos%20vorgegaukelt%20-%20SPIEGEL%20ONLINE%20-%20Netzwelt
was not found on this server. That’s all we know.