After talking about it for a long time, we found that the source of the entire wool party industry chain is the card merchants that provide a large number of mobile phone numbers for the code-receiving platform, and the big card merchants who entered the business early also made a lot of money, so the mobile phone cards of these card merchants Where did it come from? We have been tracking this issue for a long time, and the source of card merchants is actually quite extensive, mainly divided into the following categories:
IoT Card The IoT card service is a mobile communication access service provided by China Mobile, China Unicom, and telemarketing list China Telecom for IoT users using the IoT-specific segment as the MSISDN mobile communication access service. It supports basic communication services such as SMS through dedicated network element equipment, and provides communication status. For intelligent channel services such as management and communication authentication, the IoT-specific SMS access service number and the IoT-specific APN are activated by default.
This card can use data, send text messages, but cannot make calls. The IoT card is only for enterprise industrial applications, not for the personal market. For example, such IoT cards are used in shared bicycles. The essence of the IoT card is to solve the IoT problem of the industrial Internet, but it never wanted to be sniffed by the keen black-produced card dealers. It is conservatively estimated that tens of millions of IoT cards have flowed out to the black-produced field. However, a considerable amount of containment has been done so far. The goods I got from the supplier of the regular IoT card are all 13-digit numbers, but there are still loopholes. I will not go any further here.