Mobile Number Second Release Query

Tool Introduction

The mobile number second release query tool is an efficient and convenient online service designed to help users quickly identify whether a mobile number has undergone a second release. By entering the mobile number you need to verify and a specified pre-verification date, this tool will provide you with a description of the number's current status and accurately identify its attributed carrier (China Mobile, China Telecom, China Unicom). Whether you are expanding your business, verifying user registrations, or simply want to understand a number's historical usage, this tool can provide valuable reference information, effectively avoiding potential problems caused by second releases.

Background and Impact of Mobile Number Second Release

"Mobile number second release" refers to the practice where carriers reintroduce mobile numbers that have been canceled, deactivated, or unused for a long time into the market for new users after a period of "cooling-off." This mechanism aims to efficiently utilize number resources but also brings some issues. For new users, they may receive nuisance calls and messages left by the previous owner, or even encounter situations where the number is already occupied when registering for various applications, leading to an inability to use services normally. For businesses and individuals, during SMS marketing, APP registration verification, and other processes, if second release detection is not performed, it may lead to incorrect information delivery, verification failures, and even risks involving privacy leaks. Therefore, performing a second release query is of great significance for ensuring information security and improving business efficiency.

How to Use

1. Enter Mobile Number: In the "Mobile Number" input box, enter the 11-digit mobile number you want to query. For example, the default value is18888888888.
2. Enter Pre-verification Date: In the "Pre-verification Date" input box, enter a date you wish to pre-verify in yyyyMMdd format (e.g., 20250101). This date is typically used to determine the number's status at a specific point in time.
3. Click Query: After confirming that the input is correct, click the query button provided by the tool, and the system will process the information you provided.
4. View Results: The query results will be displayed in a list, including "Result Description" and "Carrier" information, clearly informing you of the mobile number's second release status and its attributed carrier.

Frequently Asked Questions

• Q: What is mobile number second release?
• A: Mobile number second release refers to the practice where carriers reintroduce recovered, long-unused mobile numbers into the market for new users after a period of "cooling-off."
• Q: Which carriers' mobile numbers can this tool query?
• A: This tool supports querying the mobile number status of the three major carriers: China Mobile (cmcc), China Telecom (ctcc), and China Unicom (cucc).
• Q: What is the purpose of the pre-verification date?
• A: The pre-verification date is used to specify a point in time to determine the number's potential status or historical information, which helps in more precise verification and planning in specific business scenarios.
• Q: Are the query results real-time and accurate?
• A: The data for this tool comes from authoritative interfaces and strives to provide accurate query results. However, mobile number status is dynamic, so it is recommended to refer to official carrier information as the final reference.

Important Notes

• Please ensure that the entered mobile number is an 11-digit valid number.
• The pre-verification date must be strictly filled in the eight-digit yyyyMMdd format, such as 20250101, to ensure the date format is correct.
• The query results from this tool are for reference only and do not constitute final legal basis. If you have any questions, please consult the official channels of the respective carrier.
• Please do not use the query results for illegal purposes and protect personal privacy information.