Some 2nd gen Intel Acer Aspire (?) SFF with an older gen NVIDIA card. Last Windows machine in the household due to WAF.

But listen,…

Some German cable providers do internal NATting please check that yours does not.

This is too true, I usually do not touch any tech stuff anymore at home, working in IT all day.

Usually those numbers fall back into the provider’s pool after a time of not regular usage and get sold again, at least here in Europe.