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

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

1. Obtain subscriber ID from the FTC DNC Registry
2. Subscribe to relevant area codes (fee scales with number of area codes)
3. Download updated DNC list (updated daily)
4. Run outbound call list against DNC before each campaign
5. Suppress matching numbers from the call list
6. 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.