FritzBox are also very famous for getting service on lines where other vendors will just crap out. Their chipsets and tunings are top-notch.
In addition, the backwards compatibility is amazing. It's 2024, and to my knowledge most of their models still support pulse dialling on the analog telephone frontend.
Although expensive, they've always had good fame (and I even had a friend working from them years ago), but something "funny" was going on with their routers some months ago...
Yeah that's because they used .box as a custom TLD for decades and either didn't get the introduction of .box as a legitimate TLD or failed to secure fritz.box in time.
Not the first time this has happened, and likely won't be the last either.
Currently the fritz.box domain seems to be owned by AVM (the makers of the FritzBox). Maybe it was just not existing and the local resolver on the box got confused? The domain was created in January and updated only a few days ago so things might actually have changed in the meantime...
Are they still? I did try on a 5490 a few years ago and it totally ignored the pulses... an older one accepted the pulse dialling but it was not working all the time. Just tried with a single phone so maybe it was the phone ;-)