This is an anonymous proxy router without any logs. Most likely you are accessing this website because you had some issue with the traffic coming from this IP. This router is part of a JonDonym Cascade, which is dedicated to providing privacy to people who need it most: average computer users. This router IP should be generating no other traffic, unless it has been compromised.
how JonDonym works
JonDonym is used by an important segments of the population, including whistle blowers, journalists, Chinese dissidents skirting the Great Firewall and oppressive censorship, abuse victims, stalker targets and law enforcement, just to name a few. While JonDonym is not designed for malicious computer users, it is true that they can use the service for malicious ends. In reality however, the actual amount of is quite very low.

This is largely because criminals and hackers have significantly better access to privacy and anonymity than do the regular users whom they prey upon. Criminals can and do build, sell, and trade far larger and more powerful networks. Thus, in the mind of this operator, the social need for easily accessible censorship-resistant private, anonymous communication trumps the risk of unskilled bad actors, who are almost always more easily uncovered by traditional police work than by extensive monitoring and surveillance anyway.

There is little the operator of this router can do to help you track the connection further. This mix maintains no logs of any traffic, so there is little that can be done to trace either legitimate or illegitimate traffic.

You also have the option of blocking this IP address and others on the JonDonym service if you so desire. Please, write a blocking request. JonDos GmbH can recommend your server for the blocklist of JonDonym. Please be considerate when using these options. It would be unfortunate to deny all JonDonym users access to your site indefinitely simply because of a few bad apples.