Does the Do Not Call Registry Actually Work?

The National Do Not Call Registry does work, but only against callers who follow the law. If you register your number, legitimate telemarketers have to stop cold-calling you within 31 days, and companies that ignore the rule face civil penalties of up to $53,088 per violation.¹ Scammers, on the other hand, don’t care that you’re on a list. They spoof caller ID, operate from overseas, and cycle through numbers faster than regulators can chase them. The FTC says so directly: the registry “doesn’t block calls” and “won’t stop calls from scammers making illegal calls.”² So the registry is worth using, but it is one layer of protection, not the whole answer.

What Registration Actually Stops

The registry is a list telemarketers are required to check. It doesn’t block anything at the network level; it tells commercial callers which numbers are off limits. Once your number has been on the list for 31 days, sales calls from law-abiding companies should stop.² More than 258 million numbers are currently registered, and since the registry launched in 2003 the FTC has filed 173 lawsuits and collected nearly $400 million from violators.³

Two details are worth knowing. Registrations never expire, so any message telling you your number is about to drop off the list is itself a scam.⁴ And the registry covers personal phone numbers only. Business lines and fax numbers aren’t included.²

Calls That Are Still Legal After You Register

A big reason people conclude the registry “doesn’t work” is that several categories of calls fall outside its scope entirely. If you’re still hearing from these groups, the law is on their side:

Political campaigns asking for votes or donations.
Nonprofits and tax-exempt charities soliciting contributions.⁵
Survey and market research callers who aren’t selling anything.
Debt collectors pursuing an existing debt, as long as they don’t tack on a sales pitch.²
Healthcare providers calling about prescriptions, appointments, or treatment.⁶

Companies you have actually done business with also get a window. After a purchase or financial transaction, they can call you for 18 months. After a mere inquiry or application, the window shrinks to three months.⁷ Once that period runs out, your registration applies again.

There is a workaround for exempt callers. You can tell any individual company or charity to stop calling you, and it must add you to its internal do-not-call list, regardless of what the national registry says.⁸ That is often the fastest way to stop a nonprofit or a political committee.

Why the Scam Calls Keep Coming

The unwanted calls that fill most people’s voicemail — the fake IRS agent, the car warranty pitch, the “your account has been compromised” recording — aren’t coming from registered telemarketers. They’re coming from criminals, and the registry has essentially no leverage over them.

Illegal callers routinely spoof their caller ID, disguising the real originating number so a local area code or a fake government line appears on your screen.⁹ Spoofing with intent to defraud is illegal under the Truth in Caller ID Act, but tracking down callers who operate offshore or churn through thousands of numbers is slow, expensive work.

The main technical answer has been STIR/SHAKEN, a caller ID authentication standard the FCC now requires most phone carriers to use. It checks whether the number displayed on an incoming call actually belongs to the caller. When authentication fails, your carrier can flag the call as likely spam or block it before it rings.¹⁰ It’s not airtight, but robocall complaints to the FTC declined steadily from their fiscal year 2017 peak through 2024 before ticking up slightly in fiscal year 2025.³

How to Actually Stop the Calls

Because the registry can’t reach illegal callers, the FTC recommends adding a call-blocking layer on top of your registration.¹¹ What that looks like depends on your phone:

On a cell phone, a call-blocking app can filter suspected scam calls before they ring. Most phones also have built-in blocking and “silence unknown callers” settings, and many carriers offer free spam-filtering tools.
On an internet-based home phone (VoIP), your provider likely offers a blocking service, and third-party options work as well.
On a traditional landline, a physical call-blocking device can screen calls against known scam-number databases or force unknown callers to press a key before the phone rings.

No single tool catches everything, but registration plus an active blocking service is the strongest combination available.

What to Do When a Telemarketer Ignores the Rules

If a legitimate-seeming company keeps calling after 31 days, that’s a violation you can act on. File a report at DoNotCall.gov or by calling 1-888-382-1222. Keep track of the date and time of each call, the number that appeared on your caller ID, and the name of the company or product being pitched. The FTC received more than 2.6 million Do Not Call complaints in fiscal year 2025 alone,¹² and the agency uses those reports to spot patterns and build cases rather than to resolve individual disputes.

You also have the option to sue on your own. The Telephone Consumer Protection Act gives you a private right of action in state court. For illegal robocalls or autodialed calls, you can recover $500 per violation or your actual losses, whichever is higher. If a court finds the company acted willfully, damages can be tripled to $1,500 per call.⁵

For Do Not Call Registry violations specifically, there is one extra threshold: you must have received more than one call from the same company within a 12-month period before you can sue.⁵ Companies can defend themselves by showing they had reasonable compliance procedures and the violation was unintentional, but firms that systematically ignore the registry rarely clear that bar. Many states have their own telemarketing statutes that add penalties on top.

A Note on Text Messages

The Do Not Call Registry itself doesn’t specifically cover texts, but the TCPA does. Automated commercial texts to your cell require your prior express written consent, the same standard that applies to robocalls.¹³ Replying “STOP” revokes consent, and the sender has 10 business days to honor it. If the texts keep coming, that’s a TCPA violation, and you can report it the same way you would an illegal call.

So does the Do Not Call Registry work? For the caller it was designed to stop, yes. For everyone else who’s still calling, the registry hands you the reporting tools and the legal standing; the blocking has to come from somewhere else.

1
Federal Trade Commission. FTC Publishes Inflation-Adjusted Civil Penalty Amounts for 2025
2
Federal Trade Commission. National Do Not Call Registry FAQs
3
Federal Trade Commission. FTC Issues Biennial Report to Congress on the National Do Not Call Registry
4
Federal Trade Commission. Do Not Call Registrations Don’t Expire
5
Office of the Law Revision Counsel. 47 U.S.C. 227 – Restrictions on Use of Telephone Equipment
6
Federal Trade Commission. Complying with the Telemarketing Sales Rule
7
Government Publishing Office. 16 CFR Part 310 – Telemarketing Sales Rule
8
Federal Trade Commission. Telemarketing Sales Rule
9
Federal Communications Commission. Caller ID Spoofing
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Federal Communications Commission. Combating Spoofed Robocalls with Caller ID Authentication
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Federal Trade Commission. How To Block Unwanted Calls
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Federal Trade Commission. National Do Not Call Registry Data Book for Fiscal Year 2025
13
Federal Communications Commission. Stop Unwanted Robocalls and Texts