The National Do Not Call Registry

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In 2003, the Federal Trade Commission (FTC) launched the National Do Not Call Registry, allowing consumers to opt out of receiving telemarketing calls. Companies were required to consult the registry and remove numbers before launching campaigns.
Other countries followed suit:
Canada’s National DNCL


The UK’s Telephone Preference Service (TPS)


Australia’s Do Not Call Register


Suddenly, maintaining an up-to-date, clean phone number database hong kong telegram phone number list became critical. Marketers needed to verify consent, timestamp interactions, and prove compliance.
Impact on Phone Number Strategy
These regulatory pressures forced a new mindset. Phone numbers were now a sensitive resource, not just a sales tool. Businesses began to:
Shift toward inbound lead capture to obtain consent


Use click-to-call features on websites with clear disclosures


Record and store opt-in agreements for legal protection


Ultimately, these changes created a more respectful—and effective—environment for phone-based communication.