How long does it take for a US TG number to be re-screened? Data retention period, re-screening signals and update rhythm

When acquiring customers overseas, the U.S. TG number is the core reach resource for many teams. However, many operators will encounter a problem: the “activated” numbers that were just screened out last month will display a large number of “Account has been canceled” after private messages this month, and the delivery rate has plummeted. The reason behind this is simple - Telegram number status changes dynamically, and the filtered data is not permanently valid. This article will focus on the “shelf life” issue of US TG numbers, explain in detail the reasons for data aging, re-screening signals and update rhythm, helping you reduce ineffective costs and improve customer acquisition efficiency.

Why does U.S. TG number data need to be “preserved”?

The number status of Telegram users is affected by many factors, and it is not possible to filter it once and for all:

• Account Logout: The user actively logs out or the platform is recycled after not logging in for a long time.
• Account Banning: Account bans caused by batch registration and abnormal behavior are especially common in marketing scenarios.
• Activity decreased: Although some numbers have not been logged out, the users are no longer logged in, and no one can view the private messages.
• “Fake Number” or Temporary Number: The number itself generated by some channels is only valid for a short period of time and will expire after a few weeks.

These changes directly affect private message deliverability and response rates. If you continue to use the expired US TG number list, it will not only waste sending resources, but may also affect the account reputation due to a high proportion of invalid contacts. Therefore, regular re-filtering is fundamental to maintaining data quality.

How long is the “shelf life” of a U.S. TG number?

There is no strict uniform number of days, because the shelf life depends on your usage scenario and the quality of the data source. Based on comprehensive industry experience, in most cases it is recommended to rescreen every 1-3 months. But a more accurate judgment should combine the following three factors:

• Application Scenario (see scene breakdown below)
• Data source: Numbers registered spontaneously by real users have a relatively long “shelf life”, while numbers generated in batches or collected from public channels change faster.
• Target user habits: Among American user groups, Telegram has a relatively high proportion of active users, but there are still some numbers that belong to “silent accounts.”

Specific suggestions are given below for different scenarios.

Scenario 1: High-frequency mass marketing → It is recommended to re-screen every 2-4 weeks

If you send private messages to a number database every day or every other day (such as Telegram mass promotion), and the sending volume is large, it is recommended to shorten the rescreening cycle. Because mass messaging can easily trigger Telegram’s risk control mechanism, causing some numbers to be blocked; at the same time, high-frequency contact will also make users report or log out faster. Re-conducting the TG activation test and activity test (such as online in the past 30 days) every 2-4 weeks can ensure that the proportion of active accounts in the list is maintained at a high level.

Scenario 2: Low-frequency accurate manual private messages → Can be extended to 1-2 months

With a manual or semi-manual approach, where each private message is personalized, sent less frequently (e.g. a few rounds per week), the number is depleted at a slower rate. In this case, a quick screening can be done every 1-2 months, focusing on the TG activation status, and the activity level can be updated synchronously with the sending cycle.

Scenario 3: Pure reserve number database → Perform health check at least once every quarter

Some teams will first screen a large number of U.S. Telegram numbers and reserve them instead of using them for the time being. This kind of reserve should pay more attention to regular health checks, otherwise it will be found that a large number of numbers have expired when they need to be used. It is recommended to perform a TG activation test at least once every quarter (3 months), and delete canceled numbers to keep the library clean.

What signals tell you: It’s time to re-screen this batch of US TG numbers?

Even if a fixed period is set, in actual operations it is best to make flexible judgments based on operational feedback. The following three signals are clear indicators that must be re-screened.

Signal 1: Private message delivery rate or response rate drops significantly

During normal operations, if the delivery rate of your American Telegraph number database drops from above 80% to below 60%, or the response rate drops for two consecutive weeks, there is a high probability that the proportion of invalid numbers in the database is increasing. At this time, a comprehensive TG activation + activity test should be performed immediately.

Signal 2: Accumulate a large number of “account has been canceled” or “the other party does not have this account” feedback

After sending a private message, if the number of “User is deleted” or “User not found” returned significantly increases, it means that the proportion of eliminated accounts in the number database has increased. It is recommended to stop sending this batch of numbers and screen them first.

Signal 3: The last screening task has been more than 90 days ago

Even if there is no obvious abnormal feedback, but it has been more than 3 months since the last screening, retesting is strongly recommended. Because Telegram regularly cleans up numbers that have been inactive for a long time or registered in batches, 90 days is a safer upper limit for the cleaning cycle.

How to efficiently re-screen US Telegram numbers?

When you decide to re-screen, using the right tools can greatly improve your efficiency. Taking KK-DATA as an example, the actual operation only requires a few steps:

Steps: Remove duplicates from the old number database and submit it directly for screening

1. Log in to the console https://app.kkdata.cc/.
2. Enter the “Global Number Filtering” module and upload the number list in the last filtering result (CSV or TXT format).
3. Select detection type: At least check “tg activated” (check whether it is registered). If you need activity, you can check “tg active” and set the activity window (such as the past 30 days).
4. Enable deduplication function: The system automatically matches the detected numbers in the history to avoid repeated deductions.
5. Submit task: Check the estimated cost and confirm it. After the task is completed, new results can be downloaded in the “Task List”.

If a large number of numbers in the old number library have expired, you can use KK-DATA’s “Global Number Generation” module to supplement the new US number segments, and then merge them with the old numbers for screening.

Expense control: View real-time estimated deductions before submitting the task

KK-DATA charges per item and does not have a subscription package. Before each task is submitted, the console will display the expected amount deducted for the task (refer to the real-time price on the console). Suggestions:

• Test with a small number of numbers first to confirm that the test results are in line with expectations.
• Make full use of the deduplication function to avoid repeated detection of authenticated numbers.
• When batch screening, submit multiple small tasks, allowing you to flexibly control the budget.

Industry best practices for U.S. TG number data updates

The following are update strategies commonly used by overseas teams for your reference:

• Establish a rotation mechanism: Divide the number library into three groups A/B/C, and clean only one group every week or every two weeks to avoid excessive one-time push tasks affecting business continuity.
• Group segmentation combined with activity: On the basis of TG activation detection, activity screening (such as online in the past 30 days, online in the past 7 days) is added to further distinguish between highly active numbers and silent numbers, which can be used for marketing activities of different intensity.
• Use global number generation to supplement new numbers: KK-DATA supports number generation for 240+ countries, and US number segments can be randomly generated or imported according to number segments. New numbers are regularly obtained from the generation module, filtered and added to the reserve library to maintain the “freshness” of the library.
• Record screening history and feedback: Label each screening task (such as “2025-05-USA-Group-1”), and record the sending feedback data of this batch of numbers. Long-term accumulation can summarize the update rhythm that is most suitable for your business.

Frequently Asked Questions (FAQ) - U.S. TG number data update and rescreening

**Q: How long can the US TG number be used after screening once? ** Answer: There is no fixed shelf life. It is recommended to make dynamic judgments based on private message feedback and actual arrival rate. Retesting is usually required after 1-3 months. High-frequency marketing scenarios need to be shortened to 2-4 weeks.

**Q: Do I have to regenerate the number when re-screening the US TG number? ** Answer: Not necessarily. Just resubmit the original number list (filtering results) to the “Global Number Screening” module and select tg activation/active detection to overwrite the old data; it can also be combined with the generation of new numbers to supplement it.

**Q: How to tell whether a US Telegram number is still active? ** Answer: Use tg to activate the detection function. KK-DATA can batch detect whether the number is registered on Telegram and return the “activated/unactivated” status. It also supports exporting tgid and other fields.

**Q: Will there be any additional charges for deduplicating the re-screened data and old data? ** Answer: KK-DATA has a built-in data deduplication warehouse, which automatically removes numbers that have been detected in historical tasks when submitting tasks to avoid repeated deductions. For details, see the “Duplicate Warehouse” page of the console.

**Q: How long does it take for US Cable number activity screening to be redone? ** Answer: Activity detection (such as being online in the past 30 days) is more time-sensitive. It is recommended to perform it every 1-2 months in conjunction with the private message cycle; if the delivery is suspended, the interval can be appropriately lengthened.

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Data preservation is the cornerstone for continued and effective overseas customer acquisition. Mastering the rhythm of re-screening US TG numbers and using efficient tools will allow you to always reach real and active users. Use KK-DATA to manage your number library now and increase the value of every contact.

👉Log in to the console to start screening numbers Two-way contact customer service https://t.me/kkdata_robot For more information, visit official website or documentation