How Often Does the National DNC Registry Update?
A costly assumption in outbound calling is that a list scrubbed once stays clean. It doesn't. The National Do Not Call Registry changes every day: people add numbers constantly, and once a number is registered, the registration never expires. Knowing how the registry updates tells you how often you actually need to re-scrub.
How the registry changes
The registry is run by the Federal Trade Commission. Every day, consumers add numbers online at donotcall.gov or by phone. Those additions flow into the data that telemarketers download, so the registry you checked last month is already missing numbers that are now protected.
Three facts drive the scrubbing cadence:
- Registrations are permanent. Since the Do-Not-Call Improvement Act of 2007, a number stays on the registry until the consumer removes it or it's disconnected and reassigned. There's no five-year expiry anymore.
- New numbers are protected within 31 days. Telemarketers have up to 31 days after a consumer registers to stop calling that number.
- Disconnected numbers are removed. The FTC regularly removes numbers that have been disconnected and reassigned, so the list shrinks in some places while it grows in others.
The 31-day rule
Under the FTC's Telemarketing Sales Rule and the FCC's TCPA rules, sellers and telemarketers must use a version of the registry that is no more than 31 days old. In practice:
| Registry data downloaded | Usable until |
|---|---|
| 1 October | 1 November at the latest |
| 3 weeks ago | About 10 more days, then re-scrub |
| 45 days ago | Already expired; re-scrub before calling |
The 31 days are a legal maximum, not a target. If you call the same leads repeatedly, run campaigns back to back, or buy fresh data every week, scrubbing right before each campaign is what actually keeps you protected. See how often to re-scrub a call list.
How telemarketers get registry data
Companies that call for sales purposes register with the FTC and get a Subscription Account Number (SAN). Access is priced per area code per year, and the first five area codes are free. A SAN holder can download the full list for the area codes it pays for, or only the changes since the last download.
Most call centers don't manage this themselves. They use a scrubbing service that keeps the registry data current and checks lists on upload. If you use a service, check how often it refreshes its data, and keep the dated scrub report. It's your proof of which registry version you checked against.
State lists update on their own schedules
Several states keep their own Do Not Call lists alongside the federal registry, each with its own update schedule and scrub deadline, and some require more frequent checks than the federal 31 days. If you call into states with their own list, your scrub needs to cover those lists too. See which states have their own DNC list and federal vs. state DNC lists.
Your internal list updates in real time
The registry isn't the only list that changes. When someone tells your agent "don't call me again", that request goes on your internal Do Not Call list, and you must honor it within a reasonable time (no more than 10 business days under current FCC rules). Unlike the registry, this list is yours to maintain, and it applies to every campaign. See your internal Do Not Call list.
A scrubbing schedule that works
- Before every campaignScrub the full list against current federal and state DNC data, even if it was scrubbed last month.
- Every 31 days at mostRe-scrub any list that's still being dialed after a month.
- Every dayAdd opt-outs from agents, texts and emails to the internal DNC list.
- On every new lead batchScrub purchased or inbound leads before they're loaded into the dialer.
- Keep every reportStore dated scrub reports for at least four years as evidence.
If manual re-scrubbing keeps slipping, automate it. An API integration can check every lead before it reaches the dialer.
Frequently asked questions
How often is the National Do Not Call Registry updated?
Every day. Consumers add numbers continuously, and telemarketers can download the changes daily. Telemarketers must use registry data no more than 31 days old.
How long does it take for a number to be protected after registration?
Telemarketers have up to 31 days from the date a number is registered to stop calling it. After that, calling it without written permission or an established business relationship can violate the rules.
Do Do Not Call registrations expire?
No. Since the Do-Not-Call Improvement Act of 2007, registrations are permanent. A number stays on the registry until the consumer removes it or the number is disconnected and reassigned.
Can I reuse a list I scrubbed two months ago?
Not without re-scrubbing. Registry data must be no more than 31 days old when you call, and numbers registered since your last scrub are now protected.
How fast must I honor an internal do-not-call request?
Within a reasonable time, and no more than 10 business days under the FCC's current rules. Many companies stop calling immediately.
Carrier Fence refreshes its DNC data as new registry data is imported, and every scrub gives you a dated report. Re-scrub your list free: 500 numbers, no card.
This article is general information, not legal advice.