> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://support.quantumdigital.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Does QuantumDigital and its list partners scrub the telephone numbers on my follow-up report against the National Do Not Call Registry?

Yes. This process is completed every 90 days as required by the Do Not Call guidelines. However, before purchasing a follow-up report and making calls, you are strongly encouraged to register with the Do Not Call Registry for the purpose of personally verifying list compliance. Click [here](http://telemarketing.donotcall.gov/) for more information and how to register.