What is a Do-Not-Call Registry? Learn how DNC lists work, how individuals opt out of calls, and how Cognism uses DNC data.
This guide explains how Do Not Call (DNC) lists work and how individuals can opt out of receiving marketing calls.
It also covers how Cognism uses DNC data to support compliance and ensure responsible outreach across different regions.
What is a Do Not Call registry?
A Do Not Call (DNC) registry or list allows individuals to register their phone numbers to indicate that they do not wish to receive sales or marketing calls.
By registering their number, individuals formally express their preference not to be contacted for unsolicited marketing purposes.
How do Do Not Call registries work?
Do Not Call registries and registration requirements vary by country.
In most regions:
- Registration is free for individuals
- People can usually register mobile numbers, landline numbers, or both
- Each country operates its own registry or list
How Cognism uses Do Not Call data
Cognism matches phone numbers in its database against Do Not Call registries and lists in multiple regions.
When a phone number appears on a Do Not Call registry, it is marked as DNC and the contact info is masked in the Cognism platform.
Countries currently covered
Cognism currently supports Do Not Call registries in the following countries:
- Australia
- Belgium
- Canada
- Croatia
- France
- Germany
- Ireland
- Italy
- New Zealand
- Norway
- Portugal
- Spain
- Sweden
- United Kingdom (TPS/CTPS)
- United States
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