What Is the National Do Not Call Registry and How Does It Work?

The National Do Not Call Registry is a free list, managed by the Federal Trade Commission (FTC), where consumers can register their phone numbers to reduce unwanted telemarketing calls. A common misconception is that once a number is on the registry, every sales call to it becomes illegal. That is not how the rules work. Sellers can still lawfully call a registered number in specific situations, such as when they have an established business relationship with the person, when the person has given signed written permission to be called, or when the call falls outside the rules entirely, as most business-to-business calls do.

For sales teams that rely on telemarketing calls or outbound calling of any kind, understanding what the registry actually requires is essential. The rules come from two places: the FTC’s Telemarketing Sales Rule and the Federal Communications Commission (FCC) rules that implement the Telephone Consumer Protection Act (TCPA). Together they set out who you can call, when you can call, how often you must check your lists, and what extra consent you need for prerecorded messages.

This guide explains what the registry is, how it works, the compliance obligations that matter most for sales teams, and the exemptions that determine whether a call to a registered number is allowed.

• What is the National Do Not Call Registry?
• How the Do Not Call Registry works
• Do Not Call rules sales teams need to follow
• Who can still call a registered number
• What the registry means for sales teams and consumers
• Final takeaways

What is the National Do Not Call Registry?

The National Do Not Call Registry was created to give consumers a choice about receiving telemarketing calls at home and on their mobile phones. It is operated by the FTC, and consumers can register their landline or mobile numbers for free at donotcall.gov or by phone. Registration does not expire, so a number stays on the registry until the consumer removes it or the number is disconnected and reassigned.

The registry applies to telemarketing calls, meaning calls made to induce the purchase of goods or services. It does not cover every type of call. Political calls, calls from charities, telephone surveys, and informational calls that are not trying to sell something are outside the registry’s scope. That is why a consumer on the registry may still receive certain calls that are perfectly legal.

How the Do Not Call Registry works

For consumers, the process is simple: register a number, and telemarketers who are covered by the rules and have no applicable exemption must stop calling it. The FTC advises that calls should taper off within 31 days of registration, because that is the outer limit of how often sellers must refresh their lists against the registry.

For sellers and telemarketers, the registry works as a suppression source. Companies that make telemarketing calls to consumers must subscribe to the registry, download the registered numbers for the area codes they call, and remove those numbers from their calling lists unless an exemption applies. Automated dialing systems make it easy to place a high volume of calls, which is exactly why regulators expect the lists feeding those systems to be scrubbed on a strict schedule.

Consumers who continue to receive unwanted telemarketing calls after their number has been registered for 31 days can file a complaint with the FTC through donotcall.gov. Complaint data feeds enforcement by the FTC, the FCC, and state authorities, and violations can carry civil penalties on a per-call basis.

Do Not Call rules sales teams need to follow

The obligations below come from the FTC’s Telemarketing Sales Rule (16 CFR Part 310) and the FCC’s TCPA rules (47 CFR 64.1200). If your team makes outbound sales calls to consumers, these are the core requirements to build into your process.

Scrub your lists against the registry at least every 31 days

Sellers and telemarketers must check their calling lists against the National Do Not Call Registry at least once every 31 days and drop registered numbers that they have no exemption to call. A list that was clean two months ago is not compliant today. This cadence is the reason consumers are told to expect fewer calls within 31 days of registering.

Honor entity-specific do not call requests

Separate from the national registry, both the FTC and FCC rules require every seller to maintain its own internal do not call list. If a person asks a specific company not to call them again, that company must record the request and stop calling, even if the number is not on the national registry and even if an exemption like an established business relationship would otherwise apply. A direct request not to be called overrides the exemptions. Failing to keep and honor an internal suppression list is a violation on its own.

Call only during permitted hours

Telemarketing calls to consumers are restricted to the hours between 8 a.m. and 9 p.m. in the called party’s local time zone. Note that the rule follows the time zone of the person receiving the call, not the caller’s location, which matters for teams dialing across the country.

Identify yourself and transmit caller ID

Telemarketers must promptly disclose who is calling and the sales purpose of the call, and they must transmit accurate caller ID information. Blocking or falsifying caller ID on telemarketing calls is prohibited. Getting this right also protects your connect rates, since mislabeled numbers are a fast path to being flagged, as covered in our guide on avoiding a scam likely label in outbound sales.

Treat prerecorded calls as a separate, stricter category

Prerecorded telemarketing calls, often called robocalls, have their own consent requirements that are stricter than the rules for live calls. Under the FTC and FCC rules, delivering a prerecorded sales message to a consumer generally requires the consumer’s prior express written agreement to receive such calls from that seller. An established business relationship is not enough to justify a prerecorded sales call. Prerecorded calls must also identify the seller and provide an automated opt-out mechanism. If your outreach uses recorded messages, plan for a higher consent bar than live outbound calling.

Who can still call a registered number

This is the part the old blanket statements get wrong. Registration on the Do Not Call Registry does not prohibit all sales calls to that number. The rules allow calls in the following situations.

Established business relationship

A seller may call a consumer on the registry if there is an established business relationship. Under the rules, that relationship exists for up to 18 months after the consumer’s last purchase, delivery, or payment, and for up to 3 months after a consumer’s inquiry or application. Two important limits apply: the relationship only covers the seller the consumer dealt with, not unrelated companies, and it ends immediately for calling purposes if the consumer asks that seller to stop calling.

Signed written permission

A seller may also call a registered number if the consumer has given express agreement in writing to receive calls from that seller. The permission must be signed by the consumer and must include the number the consumer agrees to be called at. General consent buried in unrelated fine print does not meet this standard.

Business-to-business calls

The Telemarketing Sales Rule’s do not call provisions are aimed at calls to consumers. Most calls between businesses fall outside those provisions, which is why B2B sales teams can generally call work numbers without checking the national registry. This is a scope limit, not a free pass: entity-specific do not call requests, honest caller identification, and general prohibitions on deception still matter, and calls that reach an individual’s personal number can raise different questions. Teams doing outbound sales in mixed B2B and B2C markets should not assume every number on a list is a business line.

Calls the registry does not cover

As noted above, political calls, charitable solicitation calls, and legitimate survey calls that do not involve selling are not telemarketing under these rules, so the registry does not restrict them.

What the registry means for sales teams and consumers

For sales professionals

Compliance is a workflow problem as much as a legal one. A sales team calling consumers needs a repeatable process that covers registry scrubbing on the 31-day cadence, an internal suppression list for entity-specific requests, documentation of any established business relationships or written permissions it relies on, calling-hour controls, and a stricter consent track for any prerecorded outreach. Building these checks into the tools reps already use is far more reliable than expecting each rep to remember the rules call by call.

Kixie’s DNC integration supports this by helping teams run list checks and suppression workflows inside their calling process, so numbers that should not be dialed can be flagged and excluded before a rep ever places the call. These tools support a compliance program; they do not replace one. Customers remain responsible for their own compliance, including how they source consent, maintain exemption records, and configure their suppression lists.

For consumers

Registering on the Do Not Call Registry is free, takes a few minutes at donotcall.gov, and does not expire. Expect sales calls from covered telemarketers to drop off within about 31 days. You may still hear from companies you do business with, companies you gave written permission to call, and callers the registry does not cover, such as charities and political campaigns. If a specific company keeps calling and you want it to stop, tell them directly to put you on their do not call list; they are required to honor that request. Unwanted calls that continue can be reported to the FTC through donotcall.gov.

Final takeaways

The National Do Not Call Registry reduces unwanted telemarketing calls, but it is not an absolute ban on calling registered numbers. The real compliance picture is a set of overlapping FTC and FCC rules: scrub against the registry at least every 31 days, keep and honor your own internal do not call list, call only between 8 a.m. and 9 p.m. in the called party’s time zone, identify yourself honestly, rely on the established business relationship or signed written permission exemptions only when they genuinely apply, understand that most B2B calls sit outside the registry’s scope, and treat prerecorded sales calls as a stricter category that generally needs prior express written consent.

Sales teams that operationalize these rules protect themselves and call with more confidence. If you want to see how Kixie’s PowerDialer and DNC compliance features can support your team’s list checks and suppression workflows, you can schedule a demo. To learn more about the dialing side, see our overview of the PowerDialer.

This article is for general information only and is not legal advice. Consult qualified counsel about your specific compliance obligations.

Sources

• FTC: Complying with the Telemarketing Sales Rule
• FTC: National Do Not Call Registry FAQs
• National Do Not Call Registry (donotcall.gov)
• 16 CFR 310.4: Abusive telemarketing acts or practices (Telemarketing Sales Rule)
• 47 CFR 64.1200: Delivery restrictions (FCC TCPA rules)
• 47 U.S.C. 227: Restrictions on use of telephone equipment (TCPA)

How we researched this article

This article was drafted from the primary sources listed above: FTC business guidance and consumer FAQs, the official Do Not Call Registry site, the Telemarketing Sales Rule and FCC regulations as published in the Electronic Code of Federal Regulations, and the text of the Telephone Consumer Protection Act. Regulations change, so always confirm current requirements against these official sources.

Sources verified by Kixie Research Team on August 4, 2026.