Blocking & reporting

Blocking numbers, carrier billing blocks, complaints to the regulator.

Third-Party Billing Block in Germany: DrittanbietersperreThe German Drittanbietersperre is a free block on third-party charges to your mobile bill. What it stops, how to request it and how to dispute a charge.
Block Spam Calls on iPhone, Android and German LandlinesHow to block spam calls on iPhone and Android, screen unknown callers and stop nuisance calls on a German landline. Step by step for iOS 27 and Phone by Google.
Report Scam Calls in Germany: The Bundesnetzagentur GuideGermany's regulator received 85,158 complaints about number misuse in 2025. Which form to use, what details it needs, and what happens after you report.
Trace Anonymous Calls in Germany: The FangschaltungThreatening or harassing calls with no caller ID in Germany? How a Fangschaltung under section 14 TDDDG works, what it costs and when to go to the police.