How to find out that others use their mobile phone numbers to send messages to their families?

How many Internet accounts are associated with your mobile phone number, and whether it has been misused by others, you can check it through "one card for all".

Under the guidance of the Network Security Administration of the Ministry of Industry and Information Technology, the "one-card universal inquiry" is a national convenient inquiry service for Internet accounts launched by the Anti-fraud Center of the Ministry of Industry and Information Technology (China Institute of Information and Communication) on the basis of the "one-card universal inquiry" service for national mobile phone cards, in conjunction with Internet enterprises and telecommunications enterprises.