A complete guide to selecting cross-border materials: Accurately match Telegram, WhatsApp and other platforms by country/number segment

Screening of base materials is the first step to acquire customers overseas: generate mobile phone number segments in the target country, and batch check the number’s activation status, activity, gender and other fields on platforms such as Telegram, WhatsApp, and Line. For teams targeting B2B SaaS promotion, cross-border e-commerce and community operations, accurate and efficient screening of base materials directly affects subsequent reach costs and conversion rates.

In practice, users in different countries are accustomed to using different social platforms: Southeast Asian users are active in Zalo and Line, Middle Eastern users prefer Telegram and WhatsApp, and European and American users use WhatsApp, iMessage and RCS more. This means that base material screening needs to be accurately matched by country and number segment, rather than a one-size-fits-all approach.

What is transnational base material screening? Why is it important?

Base material screening is a complete process from number generation to multi-platform verification. It usually involves two steps:

• Generate number pool for target country (via random generation or custom import).
• Detect whether each number is activated, active, gender, age and other fields on the target social platform.

For cross-border customer acquisition scenarios, the number ranges in different countries vary greatly: Vietnam mainly uses +84, Indonesia uses +62, and Saudi Arabia uses +966. If the generated number is not within the number range actually allocated by the country, the detection results will be invalid. Therefore, the real selection of base materials must be based on the double accurate matching of “country + number segment”.

Three major difficulties and solutions in cross-border base material screening

When selecting cross-border base materials, the team often encounters three problems:

Insufficient coverage of segment number

Many number screening tools only support a few countries or commonly used number segments, and have poor coverage of number segments in small Southeast Asian countries, Africa or Latin American markets. For example, Vietnam’s mobile number range includes multiple prefixes such as 03, 05, 07, etc. If the tool only supports 09, it will miss a large number of valid numbers.

Solution: Choose a platform that supports 240+ country number generation. KK-DATA’s global number generation module can randomly generate numbers by country, and also supports importing custom number segments (such as a list of number segments purchased from an operator) through CSV. It is recommended to check the number format (number of digits, leading zero rules, etc.) of the target country before generating to avoid generating numbers with incorrect formats.

Single platform type

Some teams only test WhatsApp activation, ignoring the importance of other platforms in the target market. For example, in Vietnam, the penetration rate of Zalo is much higher than that of WhatsApp; in the Middle East, Telegram is the main marketing battlefield; in Japan and Thailand, Line is the core. Testing only one platform will lead to too narrow customer acquisition channels.

Solution: During the base material screening stage, detect multiple platforms at the same time. KK-DATA supports simultaneous detection of Telegram, WhatsApp, Line, Zalo, iMessage, RCS, etc. on a number list, and exports fields such as activation, activity, and gender respectively. In this way, one base material can be used for promotion plans across multiple channels, saving time and costs.

Repeated detection wastes balance

When multiple batches of tasks contain the same number, if duplication is not removed, charges will be repeatedly deducted for the number that has been detected. Especially for million-level number pools, the waste caused by repeated detection is considerable.

Solution: Use a data deduplication warehouse. KK-DATA’s deduplication warehouse will record the historical detection records of each number. When you submit a new task, the system automatically compares and skips the numbers that have been detected without any deduction. This means that during the first test, try to check all the required fields (such as activation + active + gender), and use the deduplication function during subsequent supplementary tests to avoid repeated expenses.

Practical operation of multinational bottom material screening: complete steps from generation to screening

The following is the actual operation process, taking “Generate → Filter → Export” as the main line, and each step is combined with country selection and platform settings.

Step 1: Determine the target country and required platform type

First, clarify the user habits of the target market and decide which platforms and fields to test. Here are some typical combinations:

Target country	Recommended detection platform	Key detection fields	Application scenarios
Vietnam	Zalo, Telegram	Open + Active	Zalo community operation, Telegram private message
Indonesia	WhatsApp, Telegram	Open + Active + Gender	WhatsApp Broadcast, Telegram Group Recommendation
Saudi Arabia	Telegram, WhatsApp	Open + Active + Gender	Telegram Targeted Reaching for 30-Year-Old Male
United States	WhatsApp, iMessage, RCS	Open + Active	iMessage Marketing, WhatsApp Customer Service
Japan	Line, WhatsApp	Open + Active	Line official account promotion

Note: The gender field (including age information) is based on public information on the platform. It is not ID-level accurate data, but it can be used as a reference for crowd targeting, such as filtering users around 30 years old through age distribution.

Step 2: Generate the mobile phone number segment of the target country

1. Log in to the console https://app.kkdata.cc/.
2. Enter “Global Number Generation” and select the target country (such as Vietnam).
3. Set the generation quantity, or select “Randomly generate” or “Import custom CSV”.
4. Confirm the number segment format: For example, the Vietnam Mobile number segment starts with 03, 05, 07, and 09, and has a fixed number of 10 digits (including country code).
5. After the generation is completed, download the number list or submit it directly to the next number screening task.

Tips: If you have specific number resources on hand (such as number segments purchased from a third party), you can import them through CSV. KK-DATA supports custom formats for number columns (such as including country code or not, the system will automatically recognize it).

Step 3: Submit multi-platform screening tasks

1. Select “Batch Screening Task” in the console.
2. Upload the number list generated in the previous step (CSV or TXT format).
3. Select the detection platform: You can check multiple ones, for example, detect Telegram and WhatsApp at the same time.
4. Check the detection fields: such as “Telegram activation detection”, “WhatsApp activity detection”, “Zalo gender detection”, etc.
5. The system will automatically calculate the estimated cost and display it on the task submission page.
6. Submit the task after confirming that it is correct. After the task is completed, a notification will be sent to your bound account via Telegram.
7. Export results: supports CSV, TXT and other formats, including platform ID (tgid, wsid, uid, etc.) and other fields.

How to use data deduplication warehouse to avoid repeated detection of the same number?

The data deduplication warehouse is a practical function in cross-border material screening. Its mechanism is:

• Cross-task deduplication: When the number you submit has been detected in historical tasks (same platform and detection type), the system will automatically skip the number and no fees will be charged.
• Note the difference in detection types: If only “Active” was tested last time, and “Active” is added this time, then the number will be regarded as a new test and charges will be deducted. Therefore, it is recommended that you try to check all the fields you need when testing for the first time, so that subsequent new testing types will not be billed repeatedly.
• Practical suggestions:
  1. After generating the base material for the first time, set a comprehensive detection plan (such as activation + activity + gender).
  2. For subsequent supplementary detection (for example, only for new numbers in a certain country), enable the deduplication warehouse option.
  3. Export results regularly and back them up, and clear unnecessary caches to avoid excessive warehouse data.

Best practice list for cross-border base material screening

• Before generating number segments, confirm the number format of the target country (digits, leading zeros, whether it is an international format).
• Prioritize activity detection: The customer acquisition value of active numbers is much higher than that of only activated numbers.
• Make full use of the gender field: If you are promoting to male users, you can filter male users in Telegram or Line and refer to the age distribution (such as people around 30 years old).
• Each batch of numbers should not be too many: the upper limit for a single task is about 1 million, but it is recommended to submit in batches (for example, one batch every 100,000) to facilitate monitoring results and adjusting detection strategies.
• After exporting the results, back them up locally promptly to avoid loss due to console cleaning of expired data.
• Follow the official Telegram channel https://t.me/kkdata_channel to get system announcements and feature updates.
• Beware of fake customer service: KK-DATA’s official customer service can only be contacted through https://t.me/kkdata_robot and https://t.me/kkdata_cc. Do not trust other accounts claiming to be platform customer service.

FAQ

Question: What is the difference between base material screening and ordinary number verification?

Answer: Ordinary verification only detects whether the number belongs to a certain platform (such as WhatsApp activation), while base material screening also includes multi-dimensional fields such as activity, gender, age, etc., and supports simultaneous detection across platforms. The filter number results of KK-DATA can also export tgid, wsid and other IDs to facilitate subsequent accurate access.

Question: Does cross-border material filtering support numbers from all countries?

Answer: KK-DATA supports random generation of numbers in 240+ countries and regions, covering common number segments. For rare countries, it is also possible to import numbers via a custom CSV for detection. It is recommended to check the console’s country list to confirm coverage before generating.

Question: How is the screening fee calculated? Can it be estimated?

Answer: The fee is charged based on the number of tests. Different platforms (Telegram/WhatsApp/Line, etc.) have different unit prices. There is no subscription package. The console will display the estimated cost before submitting the task, and the fee will be deducted after the task is completed. Please refer to the real-time price of the console for the specific price, and do not make up the unit price.

Question: Can the data deduplication warehouse completely avoid repeated deductions?

Answer: Yes. When the number you submit has been detected in historical tasks, the system will automatically skip the number and no fees will be charged. But please note: If you select a different detection type (for example, the last test was only activated, this time the test is active), it will still be regarded as a new detection and billed. It is recommended to check all required fields as much as possible during the first test.

Q: Is the “Age” field in the test results accurate?

Answer: The age field comes from the user’s public information on the platform side (such as Telegram profile), which is not ID-level accurate data. However, the approximate age composition (such as the proportion of people aged about 30) can be understood through statistical distribution, which is suitable as a reference for targeted screening and should not be regarded as a precise age.

If you are planning to acquire customers in cross-border markets, you may wish to try KK-DATA base material screening: free number segment generation, multi-platform batch testing, and data deduplication to save costs. Log in to the console immediately to start the operation, or contact customer service for help.

👉 Log in to the console to start screening numbers Two-way contact customer service: https://t.me/kkdata_robot More documentation and billing instructions: https://docs.kkdata.cc/