Summary
Fritz!Box modems are popular modems by the German company AVM. Since the beginning of 2024 all of the Fritz!Box devices have been hijacked. Every user of a Fritz! box should immediately stop using their Fritz!box or set up their own DHCP server. DNS requests on a Fritz!Box home network now get forwarded to an unknown entity. This is a case of DNS hijacking. The consequences of this are significant. Fritz!box users' internet behavior is now sent directly to anunknown party. It's bound to happen at some point if this is not resolved as soon as possible. A performance penalty will remain. Your internet will sometimes appear to be really slow when the registered IP address for the DNS suffix domain is not actually responding with a DNS resolution. So far there is no indication that AVM is planning to enable this option in the near future. I sincerely hope the matter gets resolved soon enough. They are unsafe and dangerous to use. The lack of a proper response from AVM is even more alarming. I'm not sure they understand the gravity of the situation. I didn't discover this by myself. The article above is a summary of what other people have discovered, and some even warned for this years ago.