Robocall campaigns: many numbers, one pattern
Most robocalls don't come from one number you can block. They come from dialers that cycle through thousands of numbers with the same pitch. In the last 60 days of FTC data (to 2026-09-30), 4 likely campaigns account for 37,070 numbers and 52,085 complaints.
- Debt-relief robocall campaign on local numbers19,094Numbers22,034Complaints189Area codes95% recorded messages · 94% of numbers reported once · active 2026-08-02 to 2026-09-30
- Debt-relief robocall campaign on toll-free numbers16,539Numbers28,559Complaints212Blocks96% recorded messages · 76% of numbers reported once · active 2026-08-02 to 2026-09-30
- Medical and prescription robocall campaign on local numbers836Numbers869Complaints34Area codes97% recorded messages · 96% of numbers reported once · active 2026-08-03 to 2026-09-30
- Medical and prescription live-caller campaign on local numbers601Numbers623Complaints20Area codes12% recorded messages · 98% of numbers reported once · active 2026-08-03 to 2026-09-30
Watching, not yet listed
8 smaller groupings pass the block tests but not every campaign test yet (usually too few numbers, or blocks that are only a few times busier than normal). They get a page once the evidence is strong.
- Impostor robocall campaign on local numbers · 585 numbers
- Impostor live-caller campaign on local numbers · 386 numbers
- Home-improvement live-caller campaign on local numbers · 77 numbers
- Debt-relief live-caller campaign on local numbers · 45 numbers
- Work-from-home robocall campaign on local numbers · 23 numbers
- Energy and solar robocall campaign on local numbers · 14 numbers
- Vacation and timeshare live-caller campaign on local numbers · 13 numbers
- Impostor robocall campaign on toll-free numbers · 13 numbers
How we group numbers
The grouping is statistical, and every step can be checked against the public FTC Do Not Call data. It uses only what that file contains: the number that called, the date and time, the subject the consumer picked, whether it was a recorded message, and the consumer's state. It never names or accuses a business.
- Prefix blocks. For each six-digit block (like 855-564-xxxx) over the last 60 days, we find the most common informative subject (“Other”, “no subject” and “dropped call” don't count). A block qualifies when at least 10 of its numbers drew that subject, the subject makes up at least 70% of the block's informative complaints, and the block has at least 5× the reported numbers of a typical reported block in its area code.
- Campaigns. Qualifying blocks are grouped when they share the subject, the kind of number (toll-free or local) and the call style (mostly recorded messages, or mostly live callers). We don't split local numbers by area code: the same signature appears in dozens of codes at once.
- Listing. A campaign is listed, indexed and linked from number and area-code pages only when it has 50+ numbers and 100+ complaints, its median block is at least 10× a typical block, 80%+ of the informative complaints share the subject, it was reported in the last 14 days, and no single complainant source (one town and phone area code, the closest the FTC file gets to one filer) supplies 25% or more of its complaints.
What this can't tell you: whether it's one operation or several using the same dialer, who is behind it, or whether a particular number in a block made any of these calls. Spoofed caller IDs often belong to people who never made the call. Figures are recalculated every 6 hours. Source: FTC Do Not Call complaints (unverified consumer reports).