Companies in Germany mostly have a local number from the area where they are physically located. If a company has multiple sites around the country, they mostly

Companies in Germany mostly have a local number from the area where they are physically located. If a company has multiple sites around the country, they mostly use a number within their HQ area or they get a service/freephone number redirecting to their call center. Bundesnetzagentur (the regulatory agency for telecommunication, electricity, gas, etc.) has very strict rules which are enforced and the fines can be very expensive, so nobody tries to find a loophole in the system. How strict are they? Oh boy, they can be worse then your worst nightmare. About 10-15 years ago, a few friends noticed stuff going missing from the shed (it was beer, so it was very serious). They ordered and installed a cheap wireless camera from china and started recording. A few days later they got a letter from Bundesnetzagentur stating they use a restricted frequency and have to stop immediately or they will be fined X000€ (don't remember the exact amount, but it was four figures so a lot of money for students. Also, pretty high for a first offense). Yes, it was the camera which was using some weird frequency band. But how did the Bundesnetzagentur found them? They were wardriving around the city and checking for unusual signals. Literally a few guys in a van filled with RF equipment driving through the city and looking for suspicious stuff [0]. They probably were driving their laps and checking security, since we have a few high profile institutions here, but got a few drunken university guys with a cheap webcam from the internet. [0] https://de.wikipedia.org/wiki/Bundesnetzagentur#/media/Datei:Landtagswahl_Rheinland-Pfalz_Impressionen_Wahlabend_by_Olaf_Kosinsky-20.jpg https://de.wikipedia.org/wiki/Bundesnetzagentur#/media/Datei...