How to filter iOS blue number? Full process tutorial from number generation to blue number detection (KK-DATA practical guide)

As an overseas marketer, you must have heard of iOS Blue Number - this refers to a valid number that has opened iMessage and the device is online, and can be displayed as a blue bubble on the iPhone. Compared with ordinary text messages, iMessage has a high arrival rate and low blocking rate. It is a “golden channel” for cross-border e-commerce independent stations and brand promotion teams to acquire customers through private messages. But the question is: **How ​​to accurately filter out iOS blue numbers from a large number of numbers? **

This article will take you step by step to complete the complete pipeline from number generation to blue number detection. Using the KK-DATA platform, there is no need to write code or build your own algorithm, and you can easily build a customer acquisition data pipeline.

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What is iOS blue number? Why do you need to screen for blue accounts when going overseas to acquire customers?

iOS Blue Number is essentially a phone number that supports iMessage and is currently online (can receive messages). On iPhone, messages sent from such numbers display blue bubbles, while regular text messages appear green. For overseas customers, the value of blue number is reflected in:

• High arrival rate: iMessage is pushed by Apple and will basically not be blocked by operators like text messages.
• Low blocking rate: As long as the user turns on iMessage, the message will be pushed directly to the mobile phone and will not be easily marked as spam.
• High conversion potential: These users usually use Apple devices and have relatively high spending power, and are suitable for promoting high-priced products.

Therefore, screening iOS blue accounts is the first step in building an efficient customer acquisition pipeline for iMessage. The “iOS/Blue Number Detection” provided by KK-DATA is a tool designed to meet this demand - you only need to prepare a list of numbers, and the system will automatically determine the iMessage status and online status of each number.

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What data can iOS blue number detection screen out? Field list

After creating the “iOS/Blue Number” detection task in the KK-DATA console, the results will usually contain the following fields (subject to the actual console export):

Field	Description
number	original phone number
imessage_status	Whether to activate iMessage (yes/no)
blue_number	Whether it is a blue number (can be received online)
device_type	Device type (iPhone / iPad / empty)
carrier	Carrier information
country	country/region

There are two detection types: iOS Blue Number (requires activation + online at the same time) and iMessage valid number (only requires activation, not online). When choosing, decide based on your promotion strategy:

• If you want to push in real time, choose blue number detection to ensure that the message can be delivered immediately.
• If you only need to collect potential users, you can use iMessage for effective detection at a lower cost (see the real-time price of the console for details).

How many items can be filtered in one task?

The upper limit of the number of numbers in a single task is about 1 million. It is recommended to start testing the accuracy with 5,000 to 10,000 items for the first time; and then scale up the batch after confirmation. The console will display the estimated deduction before submission. Submission cannot be made if the balance is insufficient. It is recommended to maintain sufficient USDT (TRC20) balance in the account.

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Number generation + iOS blue number screening - practical steps

The following takes KK-DATA as an example to demonstrate the three steps of “generate → filter → export”. Number generation is completely free, and you will only be charged on a per-item basis if you submit the number screening task.

Step 1: Generate or import target number

1. Log in to KK-DATA Console and enter the “Global Number Generation” module.
2. Select the target country/region (supports 240+ countries and regions), such as the United States, United Kingdom, Canada, etc.
3. You can select a number segment (such as the US +1 number segment), or directly use “random generation” to quickly obtain the number.
4. If you need a more accurate number segment, you can upload a custom number segment CSV file (refer to the file format document).
5. Click Generate, and the system will generate a number list for free. Once completed, you can download it directly or use it for subsequent number screening tasks.

Step 2: Create iOS blue number detection task

1. Click “New Screening Task” in the console.
2. Select the detection type as iOS/Blue Number or iMessage Valid Number (select according to your needs).
3. Upload the generated number list (supports CSV/TXT, one number per line; you can also directly paste numbers less than 1,000).
4. The system automatically calculates the estimated deductions and submits the task after confirming it is correct.
5. The task enters the queue, and you will be notified via Telegram when completed (requires binding in advance).

Step 3: View the results and export the blue number list

1. Find the completed task in the “Task List” and click to view details.
2. Filter by field: For example, only check the numbers blue_number = 是.
3. Export to CSV or TXT format. Exported results can be used directly for iMessage blasts, CRM import, or two-step verification.

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How to improve the efficiency of blue number screening? 4 practical tips

Use data deduplication warehouse to avoid repeated deductions

If you often screen the same batch of numbers multiple times (for example, first use iMessage to effectively detect, and then select some for blue number detection), it is recommended to upload the numbers to the Data Deduplication Warehouse first. KK-DATA’s deduplication warehouse will automatically compare across tasks, and numbers that have been detected will not be deducted repeatedly, helping you save a lot of balance.

Reasonably set the number of single tasks

• First batch: 5000~10000 test accuracy.
• After confirmation: Submit 50,000 to 200,000 items each time.
• When there are less than 5,000 items at a time, the submission speed is the fastest and is suitable for small batch verification.
• Flexibly adjust according to the balance to avoid task queue interruption due to insufficient balance.

Make good use of the number segment filtering of the global number generation module

For example, if you want to screen for American blue numbers, you can first check the common number ranges in the United States (such as +1 212, +1 310, etc.) and only generate numbers within that range. The quality of the numbers generated in this way is higher, and the hit rate of blue numbers may also be improved.

Turn on Telegram task notifications

After binding the Telegram account in the console settings, a reminder will be automatically sent through the robot @kkdata_robot when the screening task is completed. You don’t need to stare at the computer all the time. You will be notified immediately when the task is completed and the data can be exported as soon as possible.

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What is the difference between iOS blue number filtering and WhatsApp/Telegram number filtering?

Many teams will operate private messaging on multiple social platforms at the same time to acquire customers, but the screening logic of different platforms is different:

Comparison dimensions	iOS blue number detection	WhatsApp screen number	Telegram screen number
Goals	iMessage presence	WhatsApp enabled/active	Telegram registered/active/gender
Result fields	Device type, online status	Status, activity	tgid, active time, gender/age
Typical uses	Blue account group messaging	Batch adding friends/group messaging	TG group traffic/private messages
Inspection cost	See the console for details	See the console for details	See the console for details

Core Difference: iOS Blue Account focuses on device onlineness, while WhatsApp and Telegram focus on account activity. Your business scenario determines which test you should choose. If you need data from multiple platforms at the same time, you can create tasks separately and then merge the results by number.

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FAQ

**Q: What is iOS blue number? What can the blue number test screen out? ** Answer: An iOS blue number refers to a phone number that has subscribed to iMessage and is currently online. It displays a blue bubble on the iPhone. KK-DATA’s iOS blue number detection can determine whether the number has enabled iMessage, whether it is online, device type (iPhone/iPad), operator and other information.

**Q: Is there any charge for generating a number? ** Answer: No charge. Generate numbers for 240+ countries with the Global Number Generation module absolutely free. Only when a screening task (such as iOS blue number detection) is submitted, the fee will be deducted based on the number of detections. For specific unit prices, please see the real-time price of the console.

**Q: I only have a small number of numbers, can I enter them directly without uploading them? ** Answer: Yes. When creating a new screening task, you can manually paste the numbers (one per line), or upload a CSV/TXT file. For small batches of less than 1,000 items, it is recommended to paste directly to make it faster.

**Q: What fields does the filter number result include? ** Answer: iOS blue number detection results usually include: number, whether iMessage is activated, whether it is online (blue number), device type (such as iPhone/iPad), operator information, etc. The specific fields are subject to the console export file, and there are slight differences in different detection types.

**Q: How do I receive notification after the screening task is completed? ** Answer: You can turn on “Task Notification” in the console. After binding a Telegram account, a reminder will be automatically sent through the Telegram robot when the screening task is completed. No need to stay in front of the computer to check your progress.

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Now you can start building your own iOS blue number screening pipeline. From free number generation to precise selection of blue numbers, the entire process is operated online without any development resources.

👉Log in to the console to start screening numbers Two-way contact customer service robot: https://t.me/kkdata_robot More usage documentation: https://docs.kkdata.cc/ Official homepage: https://kkdata.cc/