How to Actually Cut Down Robocalls (and What the Do Not Call Registry Won't Do)

The National Do Not Call Registry has one job, and it is not the job most people think it has. The FTC states it plainly: the Registry is a list that tells registered telemarketers which numbers not to call. It does not block anything. It is a list.

Which means it works beautifully on the callers who were going to follow the law anyway, and has no effect whatsoever on the ones who weren't. Register anyway — it's free, it takes two minutes, and it never expires — but register knowing that the calls actually ruining your day are made by people who do not download the Registry.

Register, because the floor is worth having

Go to DoNotCall.gov, or call 1-888-382-1222 from the phone you want to register (TTY: 1-866-290-4236). If you register online you'll get an email with a confirmation link you have to click within 72 hours or the registration doesn't complete. Cell phones and landlines both work.

Your number appears on the Registry the next day, but sales calls can legally continue for up to 31 days, because that's how long businesses have to refresh their lists against it. Registration doesn't expire; the FTC removes numbers only if they're disconnected and reassigned, or if you ask.

Categories that can still call you legally even after registering: political calls, charitable solicitations, debt collection, purely informational calls, and surveys. None of them may include a sales pitch. Companies you've recently done business with can also call, as can companies you've given written permission — but if you tell any of them to stop, they have to. Write down the date you said it, because that date is the entire enforcement record.

Robocalls are a separate, stricter rule

A prerecorded sales call to you is illegal unless the company has written permission directly from you to call that way. Not implied permission. Not "you're an existing customer." Written.

So the test is short: if a recorded voice is selling something and you didn't sign up for it, the call is already illegal, and that's true whether or not you're on the Registry. A recorded call that isn't selling — your pharmacy saying a prescription is ready, an airline announcing a delay — is a different animal and generally fine.

Spoofing, and why the number on your screen means nothing

Caller ID was designed in an era when the network was a handful of trusted carriers. Now anyone with a VoIP account can put any number in the caller ID field, which is why you get calls that appear to come from your own area code, your own prefix, and occasionally your own number.

The industry answer is STIR/SHAKEN — Secure Telephone Identity Revisited, and Signature-based Handling of Asserted information using toKENs, two acronyms that were clearly named backward from the joke. It's a caller ID authentication framework in which the originating provider digitally signs the calling number, and the terminating provider verifies that signature before the phone rings. The FCC requires providers to implement it on their IP networks and to run robocall mitigation programs so they aren't originating or carrying illegal traffic.

It's why your phone now says "Scam Likely" or shows a checkmark on some calls. It is also why the calls didn't stop: authentication proves a number wasn't forged, not that the human behind it is honest, and calls handed off through older non-IP segments can't be signed at all. Treat a verified caller ID as slightly better evidence than an unverified one, and nothing more.

What actually reduces the volume

The FTC's position is unambiguous: your best defense is call blocking and call labeling, not the Registry. The specifics depend on what kind of phone you have.

• Cell phone: start with the free features already in the handset. Both major mobile operating systems have a setting that silences calls from numbers not in your contacts and sends them to voicemail with a transcript — for most people this single toggle is the largest improvement available, and it costs nothing. Then check what your carrier offers; all the major ones have free blocking and labeling tiers, plus paid ones that mostly add reporting dashboards.
• Third-party call-blocking apps use crowd-sourced reports and FTC data to intercept likely-illegal calls. Some are free, some charge monthly. Read what the app does with your contacts before installing — you're handing a company your address book in exchange for screening. The wireless industry maintains a list of these apps at ctia.org.
• Home phone over the internet (VoIP, which is most cable-bundled phone service): the provider almost certainly offers a blocking service, sometimes free. Ask specifically, because it's rarely on by default.
• Traditional copper landline: a physical call-blocking device, a small box wired between the wall jack and the phone. Some carry built-in databases of known scam numbers, some rely entirely on a list you build yourself. Worth buying for a household getting a dozen calls a day; a waste of money for one getting two a week.

Know the tradeoff you're accepting. Aggressive blocking eats legitimate calls — the pharmacy, the clinic confirming an appointment, the school. If someone in your household is waiting on a call from a number they don't have saved, silencing unknown callers will cost you that call. Check the voicemail transcripts.

Things not to do

• Don't press 1 to be removed from a list. On an illegal call there is no list. Pressing anything confirms a live human answered a working number, which is the most valuable data point you can hand a robocaller, and it gets your number sold as a verified answer.
• Don't say the word "yes" to an opening question you didn't expect. It's a low-grade risk rather than the identity-theft catastrophe it gets described as, but there's no upside to answering.
• Don't call back a missed call you don't recognize, particularly one that rang exactly once. The "one ring" scam works by getting you to dial what is actually an international toll number; the charge lands on your phone bill and most of it goes to the scammer. The FTC and FCC both say the same thing about these — don't call back, and check your phone bill for charges you can't explain.
• Don't pay for a service that promises to stop all robocalls. Nothing stops all of them, blocking is available free from your carrier and your handset, and the pitch is doing what the calls do — selling urgency.

Where to report, and what it does

Two destinations, and the choice is about whether money moved.

1. No money lost, just an unwanted call: report it at DoNotCall.gov using the short form.
2. Money lost, or you have real detail about who called: report at ReportFraud.ftc.gov.
3. Either way, include the number that received the call, the number shown on your caller ID even if you're sure it's spoofed, any callback number you were given, and the date and time.

You will not hear back. The FTC gets millions of these a year and says so directly. What happens instead is that the reported numbers are released to carriers and call-blocking providers each business day, which is one of the inputs that makes labeling work at all, and the pattern data feeds enforcement — the agency has sued hundreds of companies and individuals over illegal calls, with more than $290 million in judgments against telemarketers, and current penalties can run to $50,120 per illegal call. Judgments against offshore operations frequently collect very little of that.

So the reporting is civic, not personal. It won't fix your afternoon. Do it anyway when it takes thirty seconds, skip it when you're tired, and put the effort into the blocking settings, which are the part that actually changes how often your phone rings.

If a call already got you

If you gave out card details, a Social Security number, or remote access to a computer, that's a different problem than an annoying phone. Move fast: call the card issuer or bank, and if identity information is involved, start at IdentityTheft.gov, which builds a recovery plan and generates the report creditors ask for. Our guide to what to do after identity theft walks the whole sequence, and the honest note there applies here too — money sent by wire, gift card, or crypto is rarely recovered, no matter how quickly you report it.