The most common and compliant methods include

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How B2B Leads Mobile Numbers are Legally and Ethically Acquired
Unlike consumer mobile numbers (B2C), which almost universally require explicit consent for marketing, B2B mobile numbers (especially professional direct dials) can often be acquired and used based on "legitimate interest" under some data protection frameworks, provided the communication is relevant to the individual's professional role.



B2B Sales Intelligence Platforms / Data Providers:

These are subscription-based services that specialize in compiling, verifying, and maintaining vast databases of B2B contacts, including professional mobile numbers (direct dials).
How they work: They use various methods like AI-driven kenya phone number list scraping of public professional profiles (e.g., LinkedIn), company websites, news articles, and often employ human researchers to verify accuracy.
Compliance: Reputable providers are diligent about compliance with global data protection laws (like GDPR, which allows for "legitimate interest" in B2B context, and CCPA). They often offer features like DNC list scrubbing and tools to help users adhere to privacy regulations.
Examples: ZoomInfo, Cognism, UpLead, Apollo.io, Lusha, Seamless.AI, RocketReach, SalesIntel. Many of these have varying degrees of coverage in different regions, including Asia.