This free DNC check shows whether a US phone number is on the Do Not Call Registry before you call it.
A DNC check tells you whether a phone number is on the National Do Not Call Registry before you call it. Enter a US number and this free check shows its registry status, line type and carrier. A 7-day free trial scrubs whole calling lists and flags known TCPA litigators.
- No signup to try
- National Do Not Call Registry
- Line type and carrier
- US phone numbers
Works for US numbers. Enter a 10-digit number, e.g. (212) 555-0142.
Free & rate-limited. No signup required to try.
Example resultSample result for (212) 555-0142. Run any lookup above and it is replaced with yours.
This number is on the Do Not Call Registry
Leave it out of sales calls and texts unless you hold the person's written permission or already do business with them.
See where the 212 area code is, its local time and its history
Need this at scale? Phone Scrub API
Scrub whole calling lists against the Do Not Call Registry and known TCPA litigators, by CSV upload or API.
A DNC check tells you whether you may call a number before you dial it.
The National Do Not Call Registry is the list the Federal Trade Commission keeps of phone numbers whose owners have asked not to get sales calls. Under the FTC's Telemarketing Sales Rule, a seller or telemarketer may not place a sales call to a number on it unless the person gave written permission or already has a business relationship with the seller. A DNC check answers one question before you dial: is this number on that list?
Enter a US number above. The free result shows whether the number is on the registry, whether it is a mobile, a landline or a VoIP line, and which carrier it is on. Nothing is sent to the number, so its owner never sees that it was checked.
One number at a time suits a quick check before a call. A calling list needs every row checked, and checked again before each campaign, because the rule expects a seller to work from registry data that is no more than 31 days old. A 7-day free trial scrubs a whole list by CSV upload or API, and it also flags numbers that belong to known TCPA litigators.
Two guides and two free checks go with this one.
For how the registry works, who has to scrub against it and where state lists fit, read our federal Do Not Call list guide. For the people who sue over calls and how teams keep their numbers out of a dialer, read our guide to scrubbing a TCPA litigator list. To confirm a number is real and see its carrier before anything else, use our free phone number lookup. And to see how your own outbound number looks to the people you call, use our free spam number lookup.
A DNC check takes three steps, and the number is never called.
Enter the phone number
Type or paste any 10-digit US number. Dashes, brackets, spaces, dots and a leading 1 are all cleaned up automatically.
We check its Do Not Call status
The check reads the number's Do Not Call Registry status together with its line type and carrier. No call or text goes to the number.
Read the result
You see Listed or Not listed, the line type and the carrier. A 7-day free trial adds the known litigator flag and runs whole lists.
The Do Not Call rules a calling team works under fit in one table.
From the FTC's Telemarketing Sales Rule, 16 CFR Part 310, as published at ecfr.gov/current/title-16/part-310 and read in October 2026. The rule covers sales calls. Other calling laws, such as the TCPA and state rules, apply on top of it.
| Question | What the rule says | Where |
|---|---|---|
| May a seller call a number on the registry? | No, unless the person gave signed written permission to be called, or has an established business relationship with the seller and has not asked that seller to stop calling. | 16 CFR 310.4(b)(1)(iii)(B) |
| How fresh must the registry data be? | No more than 31 days old on the day of the call, with records that show the process. | 16 CFR 310.4(b)(3)(iv) |
| What counts as an established business relationship? | A purchase or transaction with the seller in the 540 days before the call, or an inquiry or application in the 90 days before it. | 16 CFR 310.2(q) |
| When may sales calls be placed? | Between 8 a.m. and 9 p.m. local time where the called person is, unless the person agreed to another time. | 16 CFR 310.4(c) |
| Are sales calls to a business covered? | No. Sales calls placed to a business are exempt from the registry requirement. | 16 CFR 310.6(b)(7) |
| Does a seller need its own access to the registry? | Yes. A seller must have paid the annual fee for an area code, itself or through someone acting for it, before it calls numbers there. The first five area codes are free, and each further one is $85 a year, up to $23,425. | 16 CFR 310.8(a) and (c) |
| What may registry data be used for? | Only to comply with the rule or otherwise to prevent calls to numbers on the registry. | 16 CFR 310.4(b)(2) |
Each result of the free check tells you what to do with the number.
What the free check can return for a US number, and the step a calling team takes next.
| Result | What it means | What to do |
|---|---|---|
| Listed | The number is on the National Do Not Call Registry: its owner has asked not to get sales calls. | Leave it out of sales calls and texts unless you hold the person's signed written permission or have an established business relationship with them. |
| Not listed | The number was not on the registry when it was checked. | The registry does not block a sales call to it. Keep it off your list anyway if the person has asked your company to stop calling, and check it again before a later campaign. |
| Mobile | The number is a mobile phone. | Get the person's consent before you send it autodialed or prerecorded calls or texts, which the TCPA restricts on mobile lines (47 U.S.C. 227(b)). |
| Not a valid US number | The number could not be confirmed as a working US number, so it has no registry status. | Check the digits, or remove the row from your list. |
It shows one number's Do Not Call status in seconds.
Listed or Not listed comes back first, in plain words, so a rep can decide before the call instead of after a complaint.
It tells you the line type before you dial.
Mobile, landline or VoIP matters to a calling team, because the TCPA sets stricter consent rules for autodialed calls and texts to a mobile.
Nobody is told that you checked.
The check reads records only. No call or text goes to the number, so its owner never sees that it was checked.
Whole lists run through the dashboard or the API.
With an account, upload a CSV on the Do Not Call check page of the dashboard or call the phone scrub API. Each number that matches uses 10 credits, and a number with no match uses none.
Who uses this tool
Sales teams use it before they call a new lead.
A rep who is handed one number checks it here first, and knows before dialing whether the registry rules it out.
Call centers use it to spot-check a list a vendor calls scrubbed.
Run a handful of rows from a bought list through the check. If listed numbers turn up, scrub the whole list before it loads into the dialer.
Real estate, insurance and home services teams use it before outreach.
These teams call homeowners and consumers on personal numbers, where the registry applies most often. A check before each call keeps listed numbers out.
Small businesses use it before they return to an old contact list.
A list that was fine last year is out of date now. Check a few numbers here, then scrub the whole file on a 7-day free trial before the campaign.
Frequently asked questions
Is there a free DNC check?
Yes, this one. Enter a US number above to see, with no signup, whether it is on the National Do Not Call Registry, plus its line type and carrier. To check a whole list, a 7-day free trial scrubs it by CSV upload or API.
How do I check if a number is on the Do Not Call list?
Enter the 10-digit US number in the box above and press Check this number. The result says Listed or Not listed. To confirm that your own number is registered, the FTC's site donotcall.gov has a verify option.
What is the National Do Not Call Registry?
It is the list the Federal Trade Commission keeps of phone numbers whose owners have asked not to get sales calls. Under the Telemarketing Sales Rule, sellers and telemarketers may not place sales calls to those numbers, with a few exceptions such as written permission.
How often should a business scrub its list against the Do Not Call Registry?
At least every 31 days. The FTC's Telemarketing Sales Rule expects a seller to use registry data obtained no more than 31 days before a call (16 CFR 310.4(b)(3)(iv)). In practice, scrub a list when it loads and again before each campaign.
Can I call a number that is on the Do Not Call Registry?
Only in the cases the rule allows. The main two are signed written permission from the person, and an established business relationship: a purchase in the 540 days before the call or an inquiry in the 90 days before it, as long as the person has not asked your company to stop.
Does the Do Not Call Registry apply to business-to-business calls?
No. The FTC's rule exempts sales calls placed to a business from the registry requirement (16 CFR 310.6(b)(7)). The exemption depends on who you are calling, so a personal mobile that sits on a business list is still worth checking.
What is a TCPA litigator?
A person who sues over unwanted calls again and again: serial TCPA plaintiffs, frequent complainers and the attorneys who file for them. The free check does not flag them. The phone scrub on a 7-day free trial marks their numbers so they never reach your dialer.
What should I do when a number is not on the registry?
The registry does not block a sales call to it. Three other rules still apply: honor anyone who has asked your company to stop calling, call between 8 a.m. and 9 p.m. their local time, and get consent before autodialed calls or texts to a mobile.
Are there state Do Not Call lists as well?
Yes, some states keep their own lists alongside the national registry. The free check reads the national registry. The paid phone scrub checks the national registry plus state lists where available.
Can I check a whole list of numbers at once?
Yes. With an account, upload a CSV in the dashboard or call the phone scrub API. Each number that matches uses 10 credits, about 5 cents on the Starter plan, and a number with no match uses none. The 7-day free trial on Starter comes with $5 of credits.
Does the person know I checked their number?
No. The check reads records only. No call or text goes to the number, so its owner never sees that it was checked.
Does this work for Canadian or international numbers?
No, it covers US numbers only. The National Do Not Call Registry holds US numbers, and Canada keeps a separate list that this check does not read.
The first three digits of a US number tell you where it was assigned.
Every area code has its own page with the places it covers, the local time there, and what to do when a call from it looks spoofed. These are the codes people look up most.
- 213Los Angeles
- 646New York City
- 917New York City
- 202Washington
- 404Atlanta
- 702Las Vegas
- 786Miami
- 415San Francisco
- 206Seattle
- 954Fort Lauderdale
- 323Los Angeles
- 929New York City
New area codes catch people out, because a number from one looks unfamiliar even when it is local. These are the newest working codes.
- 465New York, since Jun 2026
- 483Alabama, since Feb 2026
- 471Mississippi, since Jan 2026
- 679Michigan, since Nov 2025
- 457Louisiana, since Sep 2025
- 729Tennessee, since Sep 2025