Approximately 100,000 mobile phone numbers are reassigned by wireless carriers every day. Potentially 20% of data in an average consumer contact list could be made up of reassigned phone numbers. Therefore, theoretically, you could be liable for the maximum Telephone Consumer Protection Act (TCPA) violation of $500 per call or text on up to 20% of your entire campaign.

While the Federal Communications Commission (FCC) has promised to create a comprehensive database of reassigned numbers, none exists currently. Your best defense is to scrub for reassigned numbers and to actively maintain your contact database by asking consumers for updated information.