So I won't do too much description for the time being. There are also about tens of millions of virtual operator number segments. Some telemarketing list of them do not have real names in the early stage, but they have real names in the later stage. However, because of the low cost, many cards have been applied for. These virtual operator number segments are generally easier to guard against. 3. Overseas Card Because the signals used in Vietnam and other countries are the same as those in my country, the mobile phone cards in Vietnam can receive text messages in my country, and because they do not require real names, the demand is also strong. The author once saw a large number of overseas cards being sold in a certain group. , each card is sold for 10-15 yuan, and the subsequent new user profits of each card can completely cover the cost. In the early days, this kind of telemarketing list overseas card became popular for the convenience of some criminal gangs to commit crimes in order to avoid domestic police monitoring, but later it became a favorite of card merchants for a while. 4. Real registered operator number In some areas, because grassroots operators are under pressure from business assessment, grassroots operators are actually willing to cooperate when someone is willing to apply for a large number of cards. Due to the existence of operational risks such as non-standard management, a large number of real numbers flow into the industry chain. Therefore, there is also the restriction that the operator can only apply for X number of mobile phone numbers for one ID card, but this is also not supported by the drive of interests, and there are "sheep's heads" who use the ID cards of ordinary people for a fee (for example, using an ID card to give 50 Yuan) to apply for cards in batches at operator outlets. At the current stage of increasingly stringent domestic supervision, such real registered operator numbers have now become an important source of card merchants. 5. Group number The existence of the group number itself is a card issued by operators in batches to help large enterprises improve the efficiency of communication. It can be processed in batches only by providing the employee ID number.