How to obtain contacts through a US number query and generate a VCF file?

In today's increasingly competitive Telegram customer acquisition landscape, the traditional model of "finding customers based on experience" is no longer sustainable. Many companies spend a lot of resources acquiring phone numbers, but their conversion rates are low because they cannot understand the real needs and behavioral characteristics of potential customers.

From format misjudgment to the inefficiency of manual verification, and then to the intelligent leap of ITG's full-domain filtering, my WhatsApp number filtering journey has made me deeply aware of its value.With its advanced algorithms and massive data processing capabilities, WhatsApp number screening can not only efficiently verify number activity but also significantly improve marketing conversion rates.

In the digital marketing arena of 2025, Telegram's number-checking system has become an essential tool for precision marketing, especially when combined with WhatsApp's number-checking technology, which can maximize cross-platform customer reach.Telegram's number filtering system not only efficiently filters invalid numbers, but also uses big data analysis to identify active users, helping marketers avoid wasting resources.Ignoring the importance of Telegram's screening system led to low campaign efficiency, but after introducing ITG's full-domain screening tool, customer reach increased by more than 60%.

In the global wave of precision marketing in 2025, WhatsApp, with its over 2 billion monthly active users and 98% message open rate, has become a core platform for cross-border businesses to reach their customers.However, as the user base expands, issues such as a surge in invalid phone numbers, regional rule differences, and segmented user needs have led businesses into a predicament of "high advertising costs, low reach efficiency, and poor conversion rates."

At this point, professional WhatsApp screening platforms become the key to breaking the deadlock – high-quality WhatsApp screening platforms can filter out real and active target customers from a massive number of numbers, improving marketing accuracy from the source.

As a leading WhatsApp screening platform, ITG Global Screening, with its multi-dimensional identification, global adaptability, and efficient implementation capabilities, has become a core tool for enterprises to achieve "efficient reach + high conversion" in 2025.Companies should acquire this important capability as early as possible and transform it into a sustainable competitive advantage.

In 2025, with the acceleration of digital transformation, efficient customer acquisition capabilities have become a core competitive advantage for enterprises.In an era of data explosion, accuracy is the primary criterion for evaluating Telegram number filtering platforms.

The marketing environment in 2025 requires platforms to have the ability to quickly process millions of data points, have stable concurrent processing capabilities, control response time within seconds, and facilitate batch operations.As data regulations become more comprehensive, platforms need to ensure end-to-end encryption of data transmission, compliant data processing procedures, robust privacy protection mechanisms, and complete security certifications.