Mobile phone users of China Unicom (excluding Unicom enterprise customers and temporary network users) can log on to the code number service platform of China Information and Communication Research Institute /mark/index.html, click "Clear the wrong number mark", and correctly fill in the number, user name, account opening certificate type, certificate number, account opening time and other information. , so as to complete one-stop operations such as number tag query and automatic cancellation of wrong tags, without applying to tag service enterprises one by one.
If you have any questions, please click /qA5yV for consultation.