Check one number or screen a whole file: both are DNC-related tasks, but they are different workflows. A DNC checker looks up a single US phone number and returns one result. A DNC scrubber processes a lead file or batch of numbers and returns separated results for the entire list. Neither result is legal permission to call, and neither is a compliance guarantee.
This article compares the two so you can pick the one that fits the task in front of you.
What is a DNC checker?
A DNC checker screens one phone number at a time against the DNC-related sources a workflow uses. You enter a single US number, run the check, and get one result. Consaltek’s free DNC checker is designed for this: it checks one phone number, returns a Clear or DNC-style result, and does not require an account for an individual check.
A checker is useful when you need an answer on an isolated record — a callback, a customer service lookup, or a spot check — rather than when you need to process thousands of rows at once.
What is a DNC scrubber?
A DNC scrubber works on a lead file. It uploads a CSV or XLSX file, reads the phone column, normalizes usable US numbers, and runs the configured DNC-related checks across the batch as a tracked job. Consaltek’s bulk DNC scrubber screens lead files against the configured federal DNC, state DNC, complainant and TCPA litigator sources and provides clean, suppressed and full-result outputs.
A scrubber is for call centers or operations teams preparing campaign files or recurring lead deliveries where every record in a batch needs to be screened before upload.
What is the practical difference?
The practical difference is scope. A checker answers “what about this one number?” A scrubber answers “which records in this file match a DNC-related source?”
- A checker is one question about one number.
- A scrubber is one file processed end-to-end, with separated outputs you can review and reconcile.
- A checker returns a result on screen; a scrubber ties its outputs to the account job that produced them.
Side-by-side comparison
| Aspect | DNC Checker | DNC Scrubber |
|---|---|---|
| Input type | One phone number | Uploaded lead file (CSV or XLSX) |
| Number of records | Single record per check | Whole file, in bulk |
| Common use case | Isolated lookup and spot checks | Batch screening before a dialer import or campaign |
| Output | One result for the number | Separated clean, suppressed and full-result outputs |
| Typical workflow stage | On-demand, per record | File preparation, before upload |
| Consaltek destination | Single Number DNC Checker | Bulk DNC Scrubber |
When should you use a single-number checker?
Use a checker when the question is about one record. A rep handling a callback or a customer-service follow-up may need a fast answer on a single number without opening a file workflow. It is also a low-effort way to spot-check a few records.
When should you use a bulk scrubber?
Use a scrubber when you need bulk DNC screening for lead files before dialing. If a campaign file, a vendor delivery, or a dialer import needs every number screened and reviewed, that is bulk work. The scrubber keeps outputs separated and connected to your account so you can see what was screened and reconcile counts.
Where does DNC screening fit before dialing?
DNC screening is one step in a larger workflow. Teams commonly clean and deduplicate a file first, then run internal suppression, then screen for DNC, then export the final dialing file. For a full picture of how the pieces connect, see Consaltek’s DNC scrubbing workflow for outbound call centers. The Lead Workspace (platform) is where account-based bulk processing and job history live.
What does a DNC result not tell you?
A clean result means the configured screening sources returned no match for that number at the time of the check. It does not grant permission to call, and it is not a compliance guarantee. Calling rules depend on consent, call type, time-of-day limits, and the state and federal rules that apply to your campaign. Confirm your obligations with qualified counsel or your compliance team.
Which Consaltek workflow should you use?
Choose by scope. One number, on demand — use the single-number DNC check. A lead file before dialing — use the bulk DNC scrubber. Need to understand internal suppression versus external screening, or where DNC sits in the whole prep sequence — start with the DNC scrubbing hub. The tools remain the transactional destinations; this article is about choosing between them.
Common questions
Is a DNC checker the same as a DNC scrubber?
No. A checker screens one number. A scrubber screens a lead file or batch. They share DNC-related sources but operate on different scope.
Can I use a checker on a full lead list?
No. The checker is designed for a single number. To screen a file, use the bulk scrubber and review the separated outputs.
Does a clean checker result mean I am allowed to call?
No. A clean result only means no match was returned by the configured sources. It is not legal permission to call and not a compliance guarantee.