Best DNC scrubbing software: the registry, your lists and the records
6 vendors compared11 rowsVendor claims read 2026-10-22
For the owner or operations lead who calls or texts prospects and needs one job done well: take every number off the list that the National Do Not Call Registry, a state list or your own customers have put off limits, and keep the proof. This page compares do-not-call scrubbers only. We read six vendors' own sites and documentation on 2026-10-22; every status names the page it came from.
Verdict by use case
Best overall
It refreshes the federal registry daily, re-scrubs saved lists on a schedule and keeps an audit trail per number and per list. Its policy wizard and staff training reach the two safe-harbor parts most scrubbers leave to you.
Best inside an existing dialer or CRM
Contact Center Compliance (DNC.com)
Its docs show connectors for Genesys, Zoom Contact Center, VICIdial, Salesforce and GoHighLevel, so the scrub runs where the calls start. RetroScrub re-checks old lists after registry updates.
Best for apps built on Twilio or Vonage
One API call checks the registry under your own subscription, state lists, your internal list and line type, and its pages name Twilio, Plivo, Vonage and RingCentral. Pair it with an FCC reassigned-number query, which its pages do not describe.
Six tools, eleven rows
The first three rows are about the national registry: the scrub itself, whose subscription it runs under, and whether old lists get checked again. The next four cover the other lists and the number. The last four are how the scrub connects to your calling and what it leaves behind as a record. "Our pick" marks the best-overall verdict.
Broader suites that also handle calling hours and consent proof are on our TCPA compliance software comparison, and the rules behind each list are laid out in Do Not Call rules for business.
| Requirement | Our pickPossibleNOW | Contact Center Compliance (DNC.com) | Blacklist Alliance | RealPhoneValidation | TCPA Litigator List | Landline Remover |
|---|---|---|---|---|---|---|
| Scrubs against the National DNC Registry | Yes | Yes | Yes | Yes | Yes | Yes |
| Scrubs under your own registry subscription (SAN) | Yes | Yes | Yes | Yes | Yes | Check with the vendor |
| Re-scrubs saved lists when the registry updates | Yes | Yes | Check with the vendor | Check with the vendor | Check with the vendor | Check with the vendor |
| Scrubs state do-not-call lists | Yes | Yes | Yes | Yes | Yes | Yes |
| Keeps an internal do-not-call list for outbound calls | Yes | Yes | Yes | No | Check with the vendor | Check with the vendor |
| Identifies wireless, landline and VoIP numbers | Yes | Yes | Yes | Yes | Check with the vendor | Yes |
| Checks numbers against the FCC Reassigned Numbers Database | Yes | Yes | Check with the vendor | Yes | Check with the vendor | Check with the vendor |
| Plugs into named dialers or CRMs | Yes | Yes | Yes | Check with the vendor | Check with the vendor | Check with the vendor |
| Checks numbers by API at the moment of contact | Yes | Yes | Yes | Yes | Yes | Yes |
| Scrubs whole lists by upload or SFTP (batch) | Yes | Yes | Yes | Yes | Yes | Yes |
| Keeps a record of every check for audits | Yes | Yes | Check with the vendor | Yes | Check with the vendor | Check with the vendor |
- Scrubs against the National DNC Registry
- The safe harbor needs a registry copy obtained no more than 31 days before the call.47 CFR § 64.1200(c)(2)(i)(D)
- Scrubs under your own registry subscription (SAN)
- The safe harbor asks the seller to buy its own access to the registry from the administrator and never share the cost; the FTC's rule bars splitting access among a service provider's clients.47 CFR § 64.1200(c)(2)(i)(E)
- Re-scrubs saved lists when the registry updates
- The registry copy must be no more than 31 days old on the date any call is made, so a list scrubbed once and worked for weeks needs another pass.47 CFR § 64.1200(c)(2)(i)(D)
- Scrubs state do-not-call lists
- Some states keep their own registries; Maine's law counts a number on the national or state registry for 3 months as off limits for sales calls.10 M.R.S. § 1499-B(6) (Maine)
- Keeps an internal do-not-call list for outbound calls
- Telemarketers must record a do-not-call request when it is made and honour it for five years.47 CFR § 64.1200(d)(3), (d)(6)
- Identifies wireless, landline and VoIP numbers
- Autodialed or prerecorded calls to a cell phone need the called party's prior express consent, so the line type decides which rule a number falls under.47 U.S.C. § 227(b)(1)(A)(iii)
- Checks numbers against the FCC Reassigned Numbers Database
- A database answer of "no" that turns out wrong is a safe harbor for a call to a number that changed hands after consent.47 CFR § 64.1200(m)
- Plugs into named dialers or CRMs
- A scrub only protects the calls that pass through it; a built-in connector keeps a dialer or CRM from calling around the check.
- Checks numbers by API at the moment of contact
- A list scrubbed weeks ago goes stale; a check when the call or text goes out uses the lists as they stand that day.
- Scrubs whole lists by upload or SFTP (batch)
- Most lists arrive as files: a batch scrub cleans the file before it is loaded, and its report is the dated record of what was removed.
- Keeps a record of every check for audits
- The national DNC safe harbor holds only if the business maintains records documenting its scrub process.47 CFR § 64.1200(c)(2)(i)(D)
What the DNC safe harbor actually requires
The FCC excuses a call to a registered number only if the business shows the call was an error and that five practices were routine (47 CFR § 64.1200(c)(2)(i)). Scrubbing software is built for one of them. The cards below split each part into what a tool can carry and what stays on your desk.
Training is the part most often missing: our TCPA training quiz gives callers a dated check, and the TCPA compliance checklist covers the written procedures.
(A) Written procedures
"It has established and implemented written procedures to comply with the national do-not-call rules"
- What software can do
- Drafts the consumer-facing DNC policy: PossibleNOW's Policy Wizard and DNC.com's DNC Policy Editor both do this.
- What stays with you
- The procedure itself: who scrubs, how often, what happens to a flagged number, and proof that staff follow it.
(B) Training of personnel
"It has trained its personnel, and any entity assisting in its compliance"
- What software can do
- PossibleNOW builds online training into DNCSolution. Most scrubbers in our table offer none.
- What stays with you
- Training every caller and every outside vendor that dials for you, and keeping the dated record that they were trained.
(C) Recording
"It has maintained and recorded a list of telephone numbers that the seller may not contact"
- What software can do
- Holds the internal list and suppresses it in every scrub, with dates: PossibleNOW, DNC.com and Blacklist Alliance do.
- What stays with you
- Getting each request into the list from every channel, within 10 business days, and keeping it for 5 years.
(D) Accessing the registry
"employing a version of the national do-not-call registry obtained from the administrator of the registry no more than 31 days prior to the date any call is made, and maintains records documenting this process"
- What software can do
- The core job: a fresh registry copy, a scrub before the call, re-scrubs as the list ages, and a report of every pass.
- What stays with you
- Running every list through it before dialing, and keeping the reports where you can find them later.
(E) Purchasing the registry
"It purchases access to the relevant do-not-call data from the administrator of the national database and does not participate in any arrangement to share the cost"
- What software can do
- Nothing. A scrubber uses your subscription; it cannot lend you its own.
- What stays with you
- Buying your own registry access from the FTC for the area codes you call, and renewing it every year.
Plus The result of error
"It can demonstrate that the violation is the result of error"
- What software can do
- Its logs can show the number was scrubbed and suppressed, which helps prove a slip rather than a habit.
- What stays with you
- Showing the call was a mistake despite (A) to (E) running as routine business practice.
Vendor by vendor
Each card repeats the table's rows with the detail from the vendor's own page. Two of the six are phone-validation tools and one is a litigator list with DNC scrubbing added; the litigator scrub guide explains what those lists do and do not protect.
PossibleNOW
What it is
DNCSolution is a do-not-call platform: bulk and one-number scrubbing against federal, state, wireless and company lists, with EBR rules, a DNC policy wizard and staff training built in. PossibleNOW also sells consent software and marketing data services.
Who it fits
Companies with branches, agent networks or several call centres that want the whole do-not-call routine run in one place.
- Scrubs against the National DNC RegistryYes
Federal registry updated daily, generally available by 8 a.m. Eastern.
- Scrubs under your own registry subscription (SAN)Yes
Its list page says the federal list requires a Subscription Account Number obtained annually from the FTC.
- Re-scrubs saved lists when the registry updatesYes
Notification re-scrubs calling lists at intervals you set and alerts you to new matches, naming the list that triggered each.
- Scrubs state do-not-call listsYes
Twelve state lists named on its page, each updated within 24 hours of the state releasing its data.
- Keeps an internal do-not-call list for outbound callsYes
Company-specific lists with date stamping, upload receipts and scrub history.
- Identifies wireless, landline and VoIP numbersYes
Resells iconectiv's PortData Comply to flag numbers ported between wireless and landline.
- Checks numbers against the FCC Reassigned Numbers DatabaseYes
Reassigned Numbers Database exclusion is built into the bulk scrub workflow.
- Plugs into named dialers or CRMsYes
Bulk scrubbing APIs for Salesforce, Oracle, Eloqua and Microsoft Dynamics; a separate DNCSolution for Salesforce.
- Checks numbers by API at the moment of contactYes
DNCQuickcheck lets agents check a number, or up to 100, before calling, in DNCSolution or by API.
- Scrubs whole lists by upload or SFTP (batch)Yes
Bulk scrubbing with saved scrub profiles and scheduled processing into folders for pickup.
- Keeps a record of every check for auditsYes
Complete history and audit trail of any phone number or scrubbed list.
Contact Center Compliance (DNC.com)
What it is
DNCScrub checks numbers against the national and state registries, your internal list, litigator files, wireless and VoIP flags, and calling-time rules, by web upload, SFTP or REST API. DNC.com (Contact Center Compliance) and Blacklist Alliance are both part of Sonera, as each says on its own site (read 2026-10-22).
Who it fits
Teams on Genesys, Zoom Contact Center, VICIdial, Salesforce or GoHighLevel that want the scrub inside the dialer or CRM they already run.
- Scrubs against the National DNC RegistryYes
National registry (USA and Canada) in the same call as state lists and your internal list.
- Scrubs under your own registry subscription (SAN)Yes
Its FAQ: a National Do Not Call subscription from the FTC is required to use DNCScrub.
- Re-scrubs saved lists when the registry updatesYes
RetroScrub re-runs lists you already scrubbed after registry updates.
- Scrubs state do-not-call listsYes
Most state lists on every account; Louisiana and Oklahoma stay blocked until you send proof of state telemarketer registration.
- Keeps an internal do-not-call list for outbound callsYes
Internal list kept in the portal or by API, plus a DNC policy editor.
- Identifies wireless, landline and VoIP numbersYes
Wireless ID (including ported wireless numbers) and VoIP ID flags.
- Checks numbers against the FCC Reassigned Numbers DatabaseYes
RND Basic queries the FCC database with the number and the consent date. Its Reassigned Authority products add carrier data.
- Plugs into named dialers or CRMsYes
Documented for Genesys Cloud, Zoom Contact Center, ChaseData, Salesforce, VICIdial, GoHighLevel, Zapier and n8n.
- Checks numbers by API at the moment of contactYes
Sub-second responses from its real-time API.
- Scrubs whole lists by upload or SFTP (batch)Yes
Web portal uploads and SFTP for batch files; the product page quotes up to 200,000 records a minute.
- Keeps a record of every check for auditsYes
User actions logged with source IP in audit reports, plus daily scrub summaries and cell-phone scrub history.
Blacklist Alliance
What it is
A scrubbing API and batch service for the federal and state registries, your internal list and its own litigator database, with line-type and carrier data on the same call.
Who it fits
Calling and texting apps built on Twilio, Plivo, Vonage or RingCentral that want a scrub on every number by API.
- Scrubs against the National DNC RegistryYes
Reports or suppresses registry numbers in the area codes your own National DNC subscription covers.
- Scrubs under your own registry subscription (SAN)Yes
Registry suppression follows the area codes included in your National DNC subscription.
- Re-scrubs saved lists when the registry updatesCheck with the vendor
Real-time and batch scrubs are described; an automatic re-scrub of saved lists is not.
- Scrubs state do-not-call listsYes
Its home page says all state lists; its Litigation Firewall page says select state registries. Ask which states your plan covers.
- Keeps an internal do-not-call list for outbound callsYes
Can also suppress numbers on your company-specific DNC list.
- Identifies wireless, landline and VoIP numbersYes
Carrier name, line type and ported status by API.
- Checks numbers against the FCC Reassigned Numbers DatabaseCheck with the vendor
No reassigned-number check is described on the pages we read.
- Plugs into named dialers or CRMsYes
Drop-in API named for Twilio, Plivo, Vonage and RingCentral.
- Checks numbers by API at the moment of contactYes
Real-time scrubbing by API inside your dialer or platform.
- Scrubs whole lists by upload or SFTP (batch)Yes
Lists can also be run in batch.
- Keeps a record of every check for auditsCheck with the vendor
Scrub statistics by day, month or in real time; the pages do not describe a per-number record of each check.
RealPhoneValidation
What it is
DNC Lookup checks the national registry, every state list and the DMA's Telephone Preference Service, adds a known-litigator match and phone type, and runs as a file upload or a real-time API.
Who it fits
A business that sends files for checking before each campaign and keeps its own internal list in its CRM.
- Scrubs against the National DNC RegistryYes
Records updated daily from the FTC's registry.
- Scrubs under your own registry subscription (SAN)Yes
You enter your SAN, organization ID and SAN expiration before the first DNC Lookup.
- Re-scrubs saved lists when the registry updatesCheck with the vendor
No automatic re-scrub is described. Its own advice: check only the numbers you will call within 30 days.
- Scrubs state do-not-call listsYes
All state lists, plus the DMA Telephone Preference Service.
- Keeps an internal do-not-call list for outbound callsNo
Its compliance table marks the internal list "Caller Maintained".
- Identifies wireless, landline and VoIP numbersYes
DNC Lookup returns landline, VoIP or wireless.
- Checks numbers against the FCC Reassigned Numbers DatabaseYes
FCC database lookup with the number and the last consent date, by portal, API or sFTP.
- Plugs into named dialers or CRMsCheck with the vendor
A Salesforce app and a Twilio add-on are listed for phone validation; ask whether DNC Lookup runs inside them.
- Checks numbers by API at the moment of contactYes
Real-time API for checks at the point of entry on web forms and apps.
- Scrubs whole lists by upload or SFTP (batch)Yes
Files are processed as received and returned in about 2 to 30 minutes, depending on volume.
- Keeps a record of every check for auditsYes
Its compliance table lists documentation and audit trail as covered by a 4-year retention.
TCPA Litigator List
What it is
A litigator database first (plaintiffs, attorneys, demand-letter senders, DNC complainers) with federal and state DNC scrubbing added, by file upload or API.
Who it fits
Teams whose first worry is serial plaintiffs and who want the registry scrub from the same account.
- Scrubs against the National DNC RegistryYes
Federal and state DNC scrubs; a single-number lookup shows whether a number is on the federal list.
- Scrubs under your own registry subscription (SAN)Yes
Its terms: no DNC scrub until you give your registry Subscription Account Number and password, and only for area codes you have bought.
- Re-scrubs saved lists when the registry updatesCheck with the vendor
- Scrubs state do-not-call listsYes
The API takes a state DNC list type and a list of states to scrub; the FAQ says state scrubs can cost extra.
- Keeps an internal do-not-call list for outbound callsCheck with the vendor
No company-specific list is described.
- Identifies wireless, landline and VoIP numbersCheck with the vendor
Reports whether a number is active or inactive, not whether it is wireless or landline.
- Checks numbers against the FCC Reassigned Numbers DatabaseCheck with the vendor
- Plugs into named dialers or CRMsCheck with the vendor
The API is offered for your dialer or database; no named connectors.
- Checks numbers by API at the moment of contactYes
TCPA API for real-time scrubbing as each call is placed (API plans).
- Scrubs whole lists by upload or SFTP (batch)Yes
Online phone scrub of CSV or Excel files returns a clean list and a list of flagged numbers.
- Keeps a record of every check for auditsCheck with the vendor
A statistics endpoint reports scrubs by date range; a per-number audit trail is not described.
Landline Remover
What it is
A phone-number validator for texting lists: it sorts mobile, landline and VoIP numbers and checks state and federal DNC lists and known litigators in the same pass.
Who it fits
A small team texting from a CSV that mostly needs landlines out of the list; ask how registry access works before relying on its DNC result.
- Scrubs against the National DNC RegistryYes
Checks whether numbers are on state and federal Do-Not-Call registries.
- Scrubs under your own registry subscription (SAN)Check with the vendor
The pages we read do not mention a registry subscription or SAN.
- Re-scrubs saved lists when the registry updatesCheck with the vendor
- Scrubs state do-not-call listsYes
Named with the federal registry in the same check.
- Keeps an internal do-not-call list for outbound callsCheck with the vendor
No company-specific list is described.
- Identifies wireless, landline and VoIP numbersYes
Mobile, landline and VoIP, with the carrier.
- Checks numbers against the FCC Reassigned Numbers DatabaseCheck with the vendor
- Plugs into named dialers or CRMsCheck with the vendor
A general API for CRMs and marketing tools; no named connectors.
- Checks numbers by API at the moment of contactYes
Number Checker API for one number at a time (documentation marked beta).
- Scrubs whole lists by upload or SFTP (batch)Yes
CSV upload in the dashboard and a Bulk List API.
- Keeps a record of every check for auditsCheck with the vendor
How we read the claims
Questions buyers ask
How often do I have to scrub against the Do Not Call Registry?
Often enough that the registry copy is no more than 31 days old on the date of each call (47 CFR § 64.1200(c)(2)(i)(D)); the FTC's Telemarketing Sales Rule uses the same 31 days (16 CFR § 310.4(b)(3)(iv)). The clock runs from the copy's date, so a vendor that refreshes daily and re-scrubs saved lists keeps you inside it without a calendar. Registrations do not expire: the FCC rule says they must be honored indefinitely, until the consumer cancels or the number is removed.
Can I use my scrubbing company's registry access instead of buying my own?
No. The safe harbor asks the seller to buy access from the registry administrator and not share the cost (47 CFR § 64.1200(c)(2)(i)(E)), and the FTC's fee rule bars any arrangement with a service provider to divide access costs among its clients (16 CFR § 310.8(c)). DNC.com, PossibleNOW, RealPhoneValidation, Blacklist Alliance and TCPA Litigator List all state that they scrub against your own subscription. Landline Remover's pages do not say, so ask before you rely on it.
Does DNC scrubbing apply to text messages?
Yes. The FCC's do-not-call rules "are applicable to any person or entity making telephone solicitations or telemarketing calls or text messages to wireless telephone numbers" (47 CFR § 64.1200(e)). A marketing text to a registered number counts like a call: someone who gets more than one in 12 months from the same business can sue for up to $500 per violation, and the court can triple that for a willful or knowing violation (47 U.S.C. § 227(c)(5)).
Is a carrier "reassigned" flag the same as the FCC database check?
No. The safe harbor in 47 CFR § 64.1200(m) covers a query of the FCC's Reassigned Numbers Database made with the date consent was obtained, when the database wrongly answers "no". It protects consent-based calls, not do-not-call compliance, so it sits beside the scrub rather than inside it. DNC.com documents its FCC query (RND Basic) apart from its carrier-data products; RealPhoneValidation queries the FCC database with the last consent date.
Why does the line type matter if the number is not on the registry?
Because a separate rule applies: an autodialed or prerecorded call to a cell phone needs the called party's prior express consent (47 U.S.C. § 227(b)(1)(A)(iii)). The FCC rule allows a short grace period for a voice call made within 15 days of a number moving from landline to wireless, unless it is already on the registry or your own list (47 CFR § 64.1200(a)(1)(iv)). A wireless or ported flag on each scrub tells you which rule a number falls under.
Which state do-not-call lists should a scrub cover?
Every state you call into that keeps one. PossibleNOW's list page names twelve state lists. DNC.com includes most state lists on every account but keeps Louisiana and Oklahoma blocked until you send proof of state telemarketer registration. Maine treats a number on the national or state registry for 3 months as off limits for sales calls (10 M.R.S. § 1499-B(6)).
Sources
- 47 CFR § 64.1200(c)(2)(i)(D)fetched 2026-10-22
- 10 M.R.S. § 1499-B(6) (Maine)fetched 2026-10-22
- 47 U.S.C. § 227(b)(1)(A)(iii)fetched 2026-10-22
- 16 CFR § 310.8 (registry access fee)fetched 2026-10-22
- 16 CFR § 310.4(b)(3) (TSR do-not-call safe harbor)fetched 2026-10-22
- PossibleNOW: Do Not Call list management servicesfetched 2026-10-22
- PossibleNOW: DNCSolution Do Not Call list scrubbingfetched 2026-10-22
- PossibleNOW: DNCSolution 3.0fetched 2026-10-22
- DNCScrub docs: Full Scrub API overviewfetched 2026-10-22
- DNC.com: DNCScrubfetched 2026-10-22
- DNCScrub docs: Louisiana and Oklahoma registrationfetched 2026-10-22
- DNCScrub docs: RND Basic APIfetched 2026-10-22
- DNCScrub docs: Integrationsfetched 2026-10-22
- DNCScrub docs: Interaction methodsfetched 2026-10-22
- Blacklist Alliance: Data Optimizationfetched 2026-10-22
- Blacklist Alliance: TCPA and DNC compliancefetched 2026-10-22
- RealPhoneValidation: Do Not Call list scrubbingfetched 2026-10-22
- RealPhoneValidation: TCPA compliance solutionsfetched 2026-10-22
- RealPhoneValidation: Reassigned Numbers Database lookupfetched 2026-10-22
- TCPA Litigator List: home and terms of accessfetched 2026-10-22
- TCPA Litigator List: API documentationfetched 2026-10-22
- TCPA Litigator List: FAQfetched 2026-10-22
- Landline Remover: phone validation with DNC checkfetched 2026-10-22
- Landline Remover: featuresfetched 2026-10-22
- Landline Remover: API documentationfetched 2026-10-22