Are there any free ways to detect unused Hong Kong numbers? Here are some trial tools for you.

Through avatar, gender, and interaction filtering, you can precisely target potential customer groups, significantly improving the conversion rate of social media outreach.

The system supports international mobile phone number generation and screening, integrating social media account activity to achieve targeted global marketing and user resource integration.Through interactive, active, and online screening, you can quickly identify high-value users, making social media operations more efficient.

The cloud control system offers customized and granular screening modes to meet diverse business scenarios, making marketing strategies more flexible and precise.The system automatically detects unused and anomalous accounts, and filters based on age, gender, and activity level for cleaner and more effective marketing data.The cloud control system supports multi-platform account management, integrating age, gender, and activity level filtering to quickly identify high-value users on social platforms like Telegram, WhatsApp, and Facebook, improving marketing efficiency.

Through intelligent filtering based on unused numbers, active status, and online time, you can easily eliminate invalid accounts, ensuring cleaner marketing data and helping operations teams accurately target potential customers. The system offers self-screening, proxy screening, and detailed filtering modes, allowing flexible filtering by profile picture, nickname, mobile number, and area code to meet the marketing needs of different business scenarios.Batch generation and filtering of Indian, Japanese, and Mexican area codes is supported, making cross-border marketing more convenient and quickly reaching potential customers worldwide.

The cloud-based control system features built-in interaction and activity filtering, allowing you to monitor target accounts' interaction frequency and online status in real time, improving ad targeting and conversion rates.

One-click export of screening results allows batch operations on Telegram, WhatsApp, and LinkedIn.I went through a lot of detours because I neglected WhatsApp number filtering: from incorrect number formats to inefficient manual verification, until I discovered the ITG global filtering tool, which truly unlocked the secret to efficient number filtering.

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.