How to efficiently batch process 100,000 US WA numbers? A practical guide to splitting, concurrency, notifications and merging

In the field of overseas marketing and cross-border e-commerce, US WA numbers (i.e., numbers registered and activated for WhatsApp in the United States) are an important resource for reaching North American users. Whether it is mass promotion, community operation, or private messaging, unverified number lists often contain a large number of invalid, unactivated, or inactive numbers. Sending them directly will lead to waste of costs and account risks. Therefore, batch verification of the activation status and activity of US WhatsApp numbers has become a key link in data operations. When the task scale reaches 100,000 levels or even higher, how to complete the screening efficiently and stably to avoid interruption or loss of progress due to too large tasks? This article combines the actual capabilities of the product to provide a practical solution based on batch splitting, concurrency control, automatic notification, failure retry and result merging.

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What is a “US WA number”? Why do you need bulk verification?

“US WA number” is a common name in the industry, which refers to registered WhatsApp accounts in the US phone number range (such as starting with +1). For overseas teams, US WA number is one of the three core reach channels (the other two are Telegram/Line). Typical usage scenarios include:

• Cross-border e-commerce independent station: Contact historical registered users with WhatsApp to verify which numbers are still available.
• Private community operation: Before mass promotion or invitation to join the group, confirm that the number is true and valid.
• Agent/Studio: Undertake customer data cleaning needs and deliver high-quality lists according to the activated/active dimension.

The original number pool without batch verification usually contains 30%–70% invalid numbers (non-WhatsApp users, out-of-service numbers, empty numbers, etc.). Sending directly not only wastes the message cost, but may also cause the account to be temporarily restricted due to a large number of failures. Therefore, the large-scale, high-concurrency, and recoverable US WA number screening capabilities are an essential tool to save costs and improve ROI.

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Why do we need to split the 100,000-level American WA number task into batches?

Although the upper limit of a single task on the platform can be about 1 million, in actual large-scale operations, splitting 100,000-level tasks into multiple small batches is an engineering best practice. Main reasons:

• Reduce the impact of a single failure: If 100,000 items are submitted at one time, network fluctuations or format errors may cause the entire batch to fail, making troubleshooting difficult; split into small batches, the failure will only affect a few thousand items.
• Load balancing and queuing avoidance: Submitting too large tasks at the same time may trigger platform queuing or current limiting. After splitting, the tasks can be submitted at staggered peaks to improve the overall throughput.
• Easy to track progress: After completing each batch of tasks independently, you can view the result status separately and accurately locate abnormal groups.
• Cost controllable: Costs can be estimated in advance for small batches to avoid interruption due to insufficient balance due to excessive one-time deductions.

The most common split dimensions and recommended sizes

Dimensions	Description	Recommended practices
By number segment (number first)	Such as +1 212 (New York), +1 310 (Los Angeles), etc., which facilitates management by region	Suitable for regionally targeted marketing activities
Divide equally by quantity	The original list is randomly sorted and divided into equal batches	Common practice, simple and easy
By channel/list source	Separate such as old user list and new numbers exported by API	Conveniently compare the quality of different sources

Recommended size: 10,000-20,000 items per batch. If it is too small (less than 1,000), it will result in too many submissions; if it is too large (>50,000), it will lose the advantage of splitting. It is recommended to start with 15,000 items for the first try.

Use preset number segments to generate batches and filter directly.

The platform provides the global number generation function, supporting random generation of 240+ country/region number segments, generation of global number segments, or custom CSV import. The generation itself is free, and screening is deducted on a per-item basis. For the US WA number scenario, you can first generate a US number segment (such as a +1 number prefix list), and then directly submit the filtering task to form a “Generate→Filter→Export” pipeline. This is especially useful for building a target number pool from scratch.

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How to set up concurrent submission and task notification?

After splitting the batch, multiple small tasks can be submitted at the same time to speed up the overall completion. However, concurrency needs to be properly controlled to avoid platform limitations or local network congestion.

Suggestions for a reasonable number of concurrencies

• Number of tasks submitted simultaneously for a single account: 2–3 are recommended. The platform task queue may be dynamically adjusted based on the historical behavior of the account, and too many tasks may cause some delays in being queued.
• If you need to further improve throughput, you can submit the next batch at an interval of 1–2 minutes, or dynamically adjust it based on the completion speed of the previous batch of tasks.
• When the detection type is “activated + active”, a single task takes a little longer, and the number of concurrent tasks can be appropriately reduced to 2.

Telegram notification configuration steps

It is unrealistic to manually stare at the screen and wait for 100,000-level tasks to be completed. The platform supports push task completion notifications through Telegram, and the configuration is as follows:

1. Open Telegram, search and contact the official robot @kkdata_robot.
2. Follow the prompts to bind your application console account (usually you need to enter a verification code or link).
3. When submitting a task in the console, check the “Send Telegram notification after task completion” option.
4. After each batch task is completed, the status (success/failure/partial failure) and result file download link will be automatically sent to you.

With notifications, you can keep track of all batch progress without having to refresh the page in real time.

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How to retry after a task fails or partially fails?

Even if the batch split is reasonable, some numbers may still fail to detect. Common reasons:

• Network Fluctuation: Temporarily unable to connect to the target platform server.
• Number format error: Contains invalid characters, missing country code, etc.
• Insufficient Balance: The balance was sufficient when submitting, but the balance was consumed by other tasks during task execution, causing subsequent partial failures.

Retry process

1. Check task details: View the failure records of the batch on the console and export the list of failure numbers.
2. Remove abnormal numbers: Use script or Excel to filter out obvious format errors (such as not starting with +1, unequal length).
3. Confirm that the balance is sufficient: Before resubmitting, check the account balance to avoid interruption due to insufficient balance again.
4. Resubmit failed part: Submit the cleaned number list as a new task.

Important: There will be no deduction for the failed task itself, only the successfully detected part will be deducted on an item basis. So try again without worrying about additional losses.

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How to combine and export multiple filtering results?

After multi-batch screening is completed, multiple result files (CSV/TXT) will be obtained. There are two paths for merging:

Manual merge (applicable when the batch size is small)

• Export results files for all batches.
• Use Excel or Python script to merge the “valid number” column of all rows (such as numbers that have subscribed to WhatsApp) and remove duplicates.
• Disadvantages: It is cumbersome when there are many batches, and duplicate numbers may be missed.

Use the platform’s “data deduplication warehouse” to automatically merge (recommended)

The platform has a built-in Data Deduplication Warehouse function that supports cross-task number deduplication to avoid wasting balances through repeated detection. Operation steps:

1. Create a “data deduplication warehouse” in the console and import the result files of all batches.
2. The system automatically identifies duplicate numbers (based on number string matching) and only retains one record.
3. Export the final US WA activation data list after deduplication, which can be directly used to send marketing.

Advantages: Once set, subsequent new batch results can be added to the warehouse for automatic deduplication; and after deduplication, the results can be filtered again based on activity, gender and other fields when exported.

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Practical case: Batch design of a 100,000-level American WA number screening task

An overseas marketing team needs to select male users who have been active in the past 7 days from a batch of randomly generated original lists of US WA numbers (approximately 120,000 entries, +1 number segment) for use in game promotion private messages.

Implementation steps

1. Split the batches: Divide the 120,000 numbers into 8 batches according to quantity, with 15,000 numbers in each batch.
2. Generation test: First generate 500 US segment numbers for small-scale verification to confirm that the detection type (activated + active + gender) can be output correctly.
3. Concurrent submission: Submit 3 batch tasks at the same time, check “Telegram notification”.
4. Monitoring and Retry: After receiving the first failure notification (some numbers failed due to format errors), the export failure list was cleaned and resubmitted.
5. Merge and deduplicate: After all batches are successful, import the result files into the data deduplication warehouse, and export the final list after automatic deduplication (approximately 42,000 active US WA numbers, approximately 48% male).
6. Result: It takes about 2 hours in total (including retries), and the fee will be deducted based on the actual number of tests (see the real-time price on the console for details). Compared with sending the original 120,000 messages directly, the message cost is saved by more than 60%.

Note: The actual time and cost depend on the number quality and the real-time unit price of the platform. It is recommended to check the estimated cost on the console before each task.

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Summary of steps to complete bulk screening of US WA numbers using KK-DATA

1. Generate/Import Number: Use the number generation function to generate a US number segment, or directly upload a CSV of an existing number.
2. Select test type: Select WhatsApp Screener on the console → Check the required fields such as “Activate Test”, “Active Test” and “Gender Test”.
3. Submit and set notifications: Set the batch size (10,000-20,000 items/batch recommended), check Telegram notifications, and submit batch by batch.
4. Processing failure: After receiving the failure notification, export the failure list, eliminate the exceptions, and resubmit.
5. Export and merge: Use the data deduplication warehouse to automatically merge and deduplicate, or merge manually, and export the final US WA opening data.

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FAQ

**Q: What is the difference between a US WA number and a US WhatsApp number? ** Answer: WA is a common abbreviation for WhatsApp, and the two have the same meaning. “US WA number” usually refers to a number in the United States that can be used for WhatsApp registration or a WhatsApp account that has been opened.

**Q: How big is the appropriate size for each batch of 100,000-level American WA number tasks? ** Answer: It is recommended that each batch is 10,000-20,000, which can be adjusted according to the number quality and real-time platform restrictions. The upper limit of a single task on the platform is about 1 million, but splitting it into smaller batches makes it easier to manage retries and merges.

**Q: How to merge multiple batch screening results to remove duplicates? ** Answer: You can use the “Data Deduplication Warehouse” function, and the system will automatically identify and filter duplicate numbers; you can also manually export CSV and use Excel or script to merge and remove duplicates.

**Q: Does retrying after a task fails require re-billing? ** Answer: There is no fee for failed tasks. When retrying, you need to resubmit this part of the number and the fee will be deducted normally. It is recommended to eliminate abnormal numbers before submitting.

**Q: How to ensure that the filtered US WA number is active? ** Answer: Select “Active” detection in the detection type and specify the active window (such as the last 7 days). The results will be marked with active status to ensure that the number is actually available.

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Complete the large-scale screening of US WA numbers and improve the efficiency of reaching US WhatsApp numbers. You can start taking action now.

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