The National Do Not Call Registry is a free database maintained by the Federal Trade Commission (FTC) that allows US consumers to register their phone numbers to opt out of unsolicited telemarketing calls and text messages. Once a number is registered, telemarketers and businesses are legally required to stop calling it — with limited exceptions — within 31 days of registration.

Ignoring the registry is not a gray area. The Telephone Consumer Protection Act (TCPA) imposes fines of $500 per violation for non-willful breaches and up to $1,500 per violation for willful misconduct — with no cap on total liability. A single campaign sent to 10,000 unscreened numbers can result in millions of dollars in exposure.

How the Do Not Call Registry Works

Consumers register their numbers at donotcall.gov. Registration is permanent — numbers do not expire and do not need to be re-registered. The FTC updates the registry monthly, and businesses making outbound calls or sending marketing texts are required to check their contact lists against the current registry at least every 31 days.

The registry covers telemarketing calls and promotional text messages. It does not apply to calls from political organisations, charities, survey companies, or businesses with an established relationship with the consumer — though state laws may impose stricter rules in some cases.

What is DNC Scrubbing?

DNC scrubbing is the process of comparing your contact list against the Do Not Call Registry — and against TCPA litigator databases — to identify and remove numbers that cannot legally be contacted. The term “scrubbing” refers to cleaning your list of numbers that pose legal risk.

A thorough DNC scrub checks three sources simultaneously:

Federal DNC Registry — the national database maintained by the FTC covering all US consumers who have opted out of telemarketing contact.

State DNC registries — several states maintain their own registries with additional restrictions. Virginia, for example, now requires businesses to honour DNC requests for 10 years under a 2026 law.

TCPA litigator database — a database of known professional plaintiffs and attorneys who register their numbers specifically to generate TCPA lawsuits. Contacting these numbers, even accidentally, results in immediate legal action. RealValidito screens against this database as part of every DNC lookup.

Who is Required to Follow the DNC Registry?

Any business that makes outbound marketing calls or sends promotional text messages to US consumers must comply with the Do Not Call Registry. This includes:

Call centers and telemarketing operations, SMS marketing platforms and agencies, real estate agents and mortgage brokers, insurance companies, debt collectors making marketing contact, and any business running outbound sales campaigns by phone or text.

Compliance is not optional and ignorance is not a defense. The FTC and FCC actively pursue enforcement actions, and private TCPA lawsuits — including class actions — are filed in the thousands every year.

How Often Should You Scrub Your List?

The legal minimum is every 31 days. The FTC updates the registry monthly, and numbers added since your last scrub represent real liability. Best practice for active outreach teams is to scrub before every campaign — not just monthly — particularly if your list grows continuously from lead generation or form submissions.

For businesses receiving inbound leads, integrate real-time DNC checking via API at the point of capture. Every number is screened the moment it enters your system, before it ever reaches an agent or campaign queue.

Exceptions to the Do Not Call Rules

The TCPA and DNC rules include several exemptions worth understanding:

Established business relationship — if a consumer has made a purchase or inquiry within the past 18 months, or has contacted your business within the past 3 months, you may contact them even if they are on the registry. However, if they have specifically asked you not to call, that request overrides the relationship exemption.

Prior written consent — if the consumer has given express written consent to receive calls or texts from your business, DNC registration does not prevent contact. Consent must be specific to your business — shared or purchased consent is not valid under 2026 FCC rules.

Non-commercial calls — political organisations, charities, and survey companies are generally exempt from the federal registry, though state laws vary.

Check Any Number Against the DNC Registry for Free

RealValidito provides 100 free DNC lookup credits — no credit card required. Check individual numbers instantly or upload a CSV to scrub your entire list against the federal registry, state registries, and TCPA litigator database in one operation.

Try the DNC Lookup tool → or create a free account for bulk scrubbing →