Glossary · DNC

What is the Do Not Call (DNC) List?

The Do Not Call List (formally the National Do Not Call Registry) is a US government-maintained list of phone numbers whose owners have opted out of unsolicited telemarketing calls. Maintained by the Federal Trade Commission, the DNC Registry contains hundreds of millions of numbers. Telemarketers are legally required to scrub their outbound call lists against the registry and suppress numbers present on it. Violations carry fines up to $50,120 per call plus TCPA statutory damages. SMS marketing is increasingly held to similar standards.

DNC Registry basics

Maintained by: Federal Trade Commission (FTC)
Enrollment: consumers register at donotcall.gov or by calling 1-888-382-1222
Scope: residential and wireless phone numbers
Permanence: numbers remain on the registry until the consumer removes them
Access for callers: telemarketers subscribe to the registry via area code; fees apply

How to add your number to the Do Not Call Registry

If you are a consumer trying to stop telemarketing calls, registering takes about a minute and is free:

Online: go to donotcall.gov and enter up to three phone numbers plus an email address. You will get a confirmation email — click the link in it within 72 hours to complete registration.
By phone: call 1-888-382-1222 from the phone you want to register. For TTY, call 1-866-290-4236.

Registration is permanent — numbers stay on the registry until you remove them or the number is disconnected and reassigned. You do not need to re-register periodically (an old myth). Telemarketers must stop calling within 31 days of your registration.

What registering does and does not do:

It stops sales calls from legitimate telemarketers.
It does not stop calls from charities, political groups, debt collectors, surveys, or companies you have an existing business relationship with.
It does not stop scam calls — illegal robocallers ignore the registry entirely. The registry is a legal compliance tool for honest businesses, not a technical block.

To report a violation — a sales call received more than 31 days after you registered — file a complaint at donotcall.gov. State registries (see below) may offer additional protection.

Who must scrub against DNC

Under the TCPA and Telemarketing Sales Rule:

Telemarketers making sales calls to consumers, must scrub every 31 days
Sellers / advertisers who engage telemarketers, joint responsibility
Outbound SMS senders: many interpretations extend DNC to SMS marketing

Exceptions (narrow and risky):

Existing business relationship (EBR): up to 18 months after the consumer’s last purchase or payment; 3 months after inquiry
Prior express written consent: consumer signed something agreeing to be called despite DNC status
Nonprofit charitable solicitations: exempt in most interpretations
Political speech: First Amendment protections
Surveys and research (not sales): exempt if genuinely non-commercial

All exceptions are narrow. Case law has tightened interpretations over time. Default assumption: if a number is on DNC and you don’t have documented express written consent, do not call it.

DNC scrubbing process

Obtain subscriber ID from the FTC DNC Registry
Subscribe to relevant area codes (fee scales with number of area codes)
Download updated DNC list (updated daily)
Run outbound call list against DNC before each campaign
Suppress matching numbers from the call list
Retain scrub records for at least 24 months

Most business dialer platforms automate this entirely. DialPhone’s outbound dialing handles DNC scrubbing in real time for every outbound campaign, suppresses matches, and maintains an audit trail.

DNC vs. internal DNC list

National DNC Registry: federal list of consumers opting out of all telemarketing
Internal DNC list: your company’s own list of numbers that have specifically told you to stop calling them

Both are legally required. The internal list honors individual revocations of consent even for people not on the National Registry. Scrub against both before every campaign.

DNC penalties

FTC / Telemarketing Sales Rule: up to $50,120 per violation (per call)
TCPA statutory damages: $500 per violation ($1,500 for willful)
State-level penalties: vary, often $500–$2,000 per call

Class actions combine thousands of violations. Single-company settlements have reached $50M+.

DNC and business-to-business calls

The National DNC Registry historically did not apply to B2B calls. Case law is evolving, some courts now apply DNC and TCPA rules to business numbers in certain contexts, particularly when the business number is a cell phone. Best practice: treat B2B outbound the same as B2C for compliance purposes, because:

Many “business numbers” are actually personal cells
Line between personal and business is blurred for small-business owners
Litigation risk is non-zero and growing

State-level DNC

Some states maintain their own DNC lists or broader rules:

Florida, Indiana, Louisiana, Missouri, Oklahoma, Tennessee, Texas, Wyoming: have state-specific DNC registries or rules
California has strict do-not-call rules for B2C
Some states require live-operator only (no autodialer) for certain categories

Scrub against state DNCs for states where you operate. DialPhone handles state-level DNC scrubbing in supported states.

SMS and DNC

Whether SMS marketing must scrub against DNC is legally unsettled but trending toward yes. Conservative approach:

Scrub SMS lists against DNC the same as voice calls
Maintain internal SMS opt-out lists (any recipient who sent STOP)
Honor STOP keywords across your entire account, not just the individual campaign
Apply 10DLC brand and campaign compliance in parallel

DialPhone SMS handles STOP keyword suppression account-wide automatically. DNC scrubbing for SMS is available in the admin portal.

Call treatment after DNC match

When your system identifies a DNC-listed number in an outbound campaign, the options are:

Suppress silently: drop the number from the campaign list
Block at dial time: agent screen pops a compliance warning
Transfer to manual review: rare, for companies that want human oversight

DialPhone’s outbound dialer shows an on-screen compliance alert before the call is initiated if the agent attempts to dial a DNC-listed number. The call is blocked at the platform level.

DNC record retention

Subscribe receipts: keep proof that you subscribed to the DNC Registry
Scrub records: document every scrub with date, list, and DNC file version used
Revocation records: internal opt-outs with timestamps
Consent records: for contacts you do call, keep the original consent form for at least 4 years
Agent training records: demonstrate TCPA training for every rep

Retention period: at least 24 months per FTC rule. Many industries require longer (financial services: 7 years).

DNC exemptions in practice

The safest interpretation is to not rely on exemptions. They are narrow, court-tested, and constantly litigated.

If you believe an exemption applies, document:

The specific exemption (EBR, prior consent, charitable, political)
Evidence supporting it (consent form, transaction record, 501(c)(3) status)
The timestamp of the qualifying event
The expiration of the exemption window (for EBR, the 18-month clock)

DialPhone DNC features

Automatic DNC Registry scrubbing: applied to every outbound campaign
Real-time compliance alerts: agents see warnings before dialing risky numbers
Internal DNC management: add or remove numbers account-wide
State-level DNC support in applicable states
Time-of-day enforcement: quiet hours honored in recipient time zone
Audit trail: every scrub, every opt-out, every attempt logged
STOP keyword handling: account-wide SMS opt-out suppression

See DialPhone outbound dialing → · See TCPA compliance overview →

Example

A solar-installation company using a predictive dialer without DNC scrubbing made 200,000 outbound calls in a quarter. 12 DNC-registered consumers filed complaints, which the FTC aggregated with others. Settlement: $2.9M. Had they used a compliant dialer with automatic DNC scrubbing from day one, the exposure would have been zero. DNC scrubbing costs a few dollars per thousand records, far less than the downside.

Do Not Call frequently asked questions

How do I add my number to the Do Not Call list?

Register free at donotcall.gov — enter up to three phone numbers and an email address, then click the confirmation link emailed to you within 72 hours. You can also call 1-888-382-1222 from the phone you want to register. Registration is permanent; you never need to renew it. Telemarketers are required to stop calling registered numbers within 31 days. Note that the registry stops legitimate sales calls only — it does not block charities, political calls, debt collectors, surveys, or outright scam robocallers, who ignore the law.

How long does it take for the Do Not Call list to work?

Telemarketers have 31 days from your registration date to scrub your number from their call lists and stop calling. After that 31-day window, any telemarketing sales call is a violation you can report at donotcall.gov. The registration itself is effective immediately and permanent — there is no waiting period to register and no expiration. If sales calls continue past 31 days, they are either coming from a non-compliant company (report them) or are illegal scam robocalls that ignore the registry entirely.

Does the Do Not Call Registry stop all unwanted calls?

No. The registry only stops sales calls from law-abiding telemarketers. It does not stop calls from charities, political organizations, debt collectors, legitimate surveys and pollsters, or companies you have an existing business relationship with — all of which are exempt. Critically, it does not stop scam and fraud robocalls, because illegal callers simply ignore the law. For scam calls, you need carrier-level call-blocking and STIR/SHAKEN caller-ID verification, not the registry.

What is the difference between the National DNC Registry and an internal DNC list?

The National DNC Registry is the federal FTC-maintained list of consumers who have opted out of all telemarketing. An internal DNC list is your own company’s record of specific people who have told you directly to stop contacting them. Both are legally required, and a compliant business must scrub outbound campaigns against both before every campaign. The internal list matters because a customer can revoke consent and demand you stop calling even if they are not on the National Registry — and you must honor that.

What are the penalties for calling a number on the DNC list?

Calling a registered number without a valid exemption can cost up to $50,120 per call under the FTC’s Telemarketing Sales Rule, plus TCPA statutory damages of $500 per call (or $1,500 for willful violations), plus state-level penalties that often run $500–$2,000 per call. Because each individual call is a separate violation, class actions aggregate thousands of calls and single-company settlements have exceeded $50M. Automatic DNC scrubbing costs a few dollars per thousand records — a rounding error against that exposure.

Outbound telemarketing services and compliance
Sales dialer software guide
TCPA — the federal law the DNC Registry enforces
10DLC — the SMS equivalent of DNC compliance
Predictive dialer — the outbound tool most likely to trigger DNC violations
DialPhone outbound dialing with DNC scrubbing