How numbers get listed & how to appeal
Last updated: October 12, 2026
We only want actual spammers on the list — not your dentist, not a small business, and definitely not someone’s ex. Here’s exactly how a number ends up blocked, and how to get it reviewed if it shouldn’t be. This is a placeholder; tune the thresholds to your final policy before launch.
How a number gets listed
- Public complaint records. We ingest public robocall and Do-Not-Call complaint records.
- Corroborated community reports. A number needs repeated, independent reports from multiple DuckingBlock users before it’s added — a single report never auto-blocks a number for everyone.
- Pattern signals. High-volume short-duration dialing and known spoof ranges raise a number’s score.
- Review threshold. Only numbers that clear a confidence threshold are added to the silent-block list. Lower-confidence numbers are labeled “Spam” on caller ID instead of blocked outright.
How a number gets removed
- Listings expire if reports stop coming in and the number goes quiet.
- Numbers confirmed as legitimate on review are removed and protected from quick re-listing.
- We re-check against the underlying evidence — not vibes.
Report a spammer
Inside the app, tap Report on any call to flag it. Reports are corroborated against others before affecting the shared list.
Appeal a listing
Think a legitimate number was blocked by mistake? Anyone can request a review — you don’t need to be a user. Email info@duckingstats.com with the number and a short note about who it belongs to. We’ll re-check it against the evidence and remove it if it doesn’t belong.