Number Screening System FAQ: Answers to the 10 Most Common Questions (2025 Edition)

In overseas marketing, cross-border e-commerce, and community operations, batch verification of number validity, activity, and even gender has become a necessity in the lead acquisition process. However, many teams encounter various questions when first using a number screening system: How is it different from ordinary verification tools? How is billing calculated? Is the data secure? As a solution focused on multi-platform social number screening, KK-DATA has compiled the 10 most frequently asked questions from clients since 2025, covering principles, billing, operations, and precautions, to help you quickly clear up any cognitive blind spots.

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What is a Number Screening System? How is it different from ordinary number verification tools?

A Number Screening System is a platform that processes numbers in batches. It not only determines the “existence” of a number but also checks the number’s status on specific social platforms—such as whether Telegram is registered, recent activity, whether WhatsApp is valid, and even identifies gender through avatar analysis. In contrast, traditional number verification tools usually only perform “invalid/valid” checks (based on carrier signaling), with limited functionality and no connection to social platforms.

Key differences are compared below:

Comparison Dimension	Ordinary Number Verification Tool	Number Screening System (e.g., KK-DATA)
Detection Target	Phone number itself (carrier level)	Phone number + social platform status
Platform Coverage	None (only checks if number can be dialed)	Telegram, WhatsApp, iMessage, RCS, etc.
Output Results	Invalid/Valid/Suspended	Registered/Valid/Activity/Gender/ID Export
Batch Capability	Usually a few hundred at a time	Up to ~1 million at a time
Data Management	No deduplication, no task records	Cross-task deduplication warehouse, multi-format export

If you are doing Telegram group promotions, WhatsApp DMs, or iMessage marketing, ordinary verification tools can hardly provide any useful information—only a number screening system can tell you whether these numbers are worth contacting.

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What platforms can the Number Screening System detect? What does each detection type mean?

KK-DATA currently supports detection on Telegram, WhatsApp, iMessage, and RCS — four major platforms, each with its own set of capabilities. Details by platform are provided below.

Telegram Screening: Registration Check, Activity Window, and Gender Identification

Telegram is one of the most common scenarios for overseas lead acquisition. The system offers 4 detection types:

• tg registration check: Determines whether the number has registered a Telegram account. This is the most basic screening, similar to a “whitelist/blacklist” filter.
• tg validity: Based on registration, further confirms whether the account is in normal usable status (not banned, not deleted).
• tg activity (customizable activity window, e.g., 7/15/30 days): Checks whether the number has online behavior (sending messages, logging in, etc.) within a specified time period. The shorter the activity window, the higher the immediate contact success rate for selected users.
• telegram gender data (avatar recognition): Uses an AI model to determine gender (Male/Female/Unknown) by analyzing the user’s avatar image. Note: This feature depends on avatar content and cannot be 100% accurate, but can assist in targeted filtering.
• tgid export: Exports the internal Telegram user ID (tgid) of matched users for later use in direct API interactions or to avoid duplicate friend requests.

WhatsApp Screening: Validity Confirmation and WSID Export

WhatsApp detection is relatively straightforward:

• Validity check: Determines whether the phone number is bound to a WhatsApp account (including WhatsApp Business). Returns “Valid” or “Invalid”.
• wsid export: Exports the unique identifier (WSID) of the account on WhatsApp, which can be used for deduplication or subsequent identity mapping (e.g., when sending messages via WhatsApp Business API).

Applicable Scenarios for iMessage and RCS Detection

• iMessage verification: Only for Apple device users. Checks whether the number has iMessage enabled (requires the phone number to be linked to an Apple ID). Suitable for iOS-dominated overseas markets (e.g., US, Japan).
• RCS verification: RCS is a carrier-level rich communication protocol (default chat app on Android). Checks whether the number supports RCS and its status (e.g., “available”, “unavailable”). Suitable for teams doing RCS marketing (currently popular in Southeast Asia and Europe).

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Is number generation free? How do generation and screening work together?

Many users mistakenly think the “number generation” feature is paid when they first see it. The actual rule is: Generation is completely free, screening is charged per number.

• Number generation: You can randomly generate numbers from 240+ countries/regions, or import custom number segments (CSV). The generated numbers are just a “raw number pool” without any platform verification.
• Screening: Submit the generated numbers as a screening task (requires account balance). After detection, the system marks which numbers are valid, active, registered, etc. in the results.

Typical workflow: Generate number pool → Import/Submit for screening → Screening completed → Export valid/active numbers → Start marketing. This way, you won’t waste money detecting numbers you already know are invalid.

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What billing methods does the screening platform use? How to evaluate if it’s cost-effective?

KK-DATA adopts a per-number billing + no subscription plan model. After each screening task is completed, the corresponding fee is deducted from your balance. If the balance is insufficient, the system will reject new tasks until you top up.

Per-number billing vs subscription plan: Which is better for small teams?

Dimension	Per-number billing	Subscription plan (traditional model)
Fixed cost	None	Fixed monthly/yearly payment
Flexibility	Pay as you use, pause anytime	Waste if not fully used, extra charges beyond limit
Suitable scenario	Small teams, project-based, trial period	Large-scale stable demand
Example	Pay for 100,000 Telegram detections once	1 million/month quota, unused does not roll over (but requires prepayment)

For newly started studios or agency teams, per-number billing is significantly more friendly—you don’t have to bear subscription fees; you can even top up 50 USDT to run a trial task. If detection volume suddenly surges, you just add more balance without needing to upgrade plans.

Top-up and USDT payment precautions

• Top-up method: USDT (TRC20), minimum approximately 50 USDT.
• Credit time: Balance updates automatically after broadcast confirmation (usually within minutes).
• Precautions:
  • When topping up, be sure to confirm the address (copy from the console) to avoid transfer errors.
  • Different detection types have different unit prices. The estimated fee will be shown before submitting a task; it’s recommended to estimate first before topping up.
  • Balance is non-refundable and cannot be transferred to other accounts. Top up as needed.

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What practical use does the data deduplication warehouse have? Why can’t the same number be detected repeatedly?

This is a very practical feature that many users easily overlook. The data deduplication warehouse automatically records all numbers that have already been detected in your tasks (by platform + detection type dimension). When you submit the same numbers again in a new task, the system skips duplicate detection—no deduction from balance.

Realistic scenario: Suppose you just checked 10,000 Telegram numbers (registration check) yesterday, and today you get an updated list of the same batch (maybe 2,000 new numbers added). If you directly submit the full list, the system will identify the 10,000 already-checked numbers and only detect and charge for the 2,000 new ones. In the exported results, historical detection results will be merged, ensuring completeness.

Benefits of this approach:

• Save balance: Don’t pay twice.
• Avoid data redundancy: No manual deduplication needed.
• Consistent results: Historical and new results are presented together in one task.

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How long does it take to get results after submitting a screening task? How can I get notified?

Processing time depends on several factors:

• Number volume: Single task can handle up to ~1 million numbers; larger volume takes longer.
• Platform type: Telegram is relatively fast (hundreds of thousands per day), iMessage and RCS are slightly slower (involve carrier interaction).
• Resource load: Queuing may occur during peak hours.

General experience: 100,000 Telegram detections usually take 1–2 hours; 1 million may take half a day to a day.

How to get notified: When submitting a task, check the option “Notify via Telegram upon completion” (requires you to bind your Telegram account first). The system will send a notification via KK-DATA Robot, including a summary of results and a download link.

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How accurate is the number screening system? Can it misjudge?

Accuracy is one of the most concerning issues. The screening system detects based on protocol interaction with the platform—i.e., simulating real user requests to the platform’s servers and judging the number status from the returned status codes/data. Therefore, accuracy is very high (typically between 95%–99%, depending on the platform), but not 100%.

Factors that may affect accuracy:

• Number status changes: A number may have been active a few minutes ago but just got deactivated at the time of your detection.
• Network latency and rate limiting: Temporary restrictions from the platform due to frequent requests can cause some detections to return anomalies (the system will retry, but in extreme cases may still “misjudge” one as invalid).
• Gender identification: AI recognition based on avatars; if the avatar is blurry or a non-person image (e.g., scenery, animals), it returns “Unknown”, which is not a misjudgment.

Best practice: If extremely high accuracy is required, we recommend spot-checking a sensitive batch (e.g., manually test 10–20 numbers). Most users report that Telegram and WhatsApp detection stability is sufficient for large-scale marketing.

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How can I ensure the security of uploaded numbers and data? Does the platform retain user data?

KK-DATA follows these principles in data processing:

• Temporary processing: Number files are used only for the current detection. After detection, task results are stored on the server for no more than 30 days (for user download), then automatically deleted.
• No long-term storage of raw data: The platform does not save your full number list for other purposes.
• Encrypted transmission: Data upload and download are encrypted via HTTPS.

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Frequently Asked Questions

Q: Can the screening system detect Telegram accounts that have been deleted or frozen?
A: Yes. The system sends a detection request to the platform. If the number has been deleted or frozen, the platform returns a status of “not registered”, and the screening results will indicate that. It is recommended to further filter invalid accounts with activity detection.

Q: Why does the same number show different results in different tasks?
A: Possible reasons include: the number’s status changed between the two detections (e.g., user deleted or reported the account), or different detection windows (e.g., 7-day activity vs 30-day activity). It is recommended to use the data deduplication feature to avoid repeated detection and perform comparisons within similar time frames.

Q: Can numbers generated for free be used directly for marketing? How is the quality of generated numbers?
A: Free generation only provides random numbers, not verified for validity or activity. Direct use may contain many invalid or dead numbers. It is recommended to import the generated results into a screening task, detect them, and then use them for marketing to improve contact rates.

Q: Can the balance be refunded or transferred to another account?
A: No. Balance must be topped up as needed. Please estimate your detection volume before topping up. If you don’t need to use it temporarily, you can keep the balance; it can be used to submit tasks at any later time with no expiration limit.

Q: What does it mean when a screening result shows “Unknown”?
A: This commonly occurs in gender recognition scenarios (unclear avatar) or when the platform does not return a clear status for iMessage/RCS detection. These numbers can be kept with “Unknown” status and should not be used as the sole basis for your marketing decisions, but it does not affect the valid/invalid judgment.

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We hope this FAQ helps you build a clear understanding of the number screening system. Whether you are new to batch lead acquisition or optimizing your existing detection workflow, you can start experiencing it by generating numbers for free, then gradually go deeper.

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