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2025-09

How to identify an invalid mobile phone number? An article teaches you how to screen empty accounts

In cross-border private domain and precision marketing, the authenticity of number resources directly determines the reach rate and conversion rate. Many teams will encounter a common problem when operating: there are a large number of invalid mobile phone numbers in the number database, the most typical of which is empty numbers. If they cannot be effectively identified and filtered, these numbers will not only waste the cost of text messages, voice calls, and social push messages, but also lead to distortion of operational data. This article will comprehensively analyze the identification method of invalid mobile phone numbers, and combine it with the professional detection function of Digital Planet to teach you how to efficiently complete the empty number screening.

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