Is it illegal to send verification code with someone else's mobile phone number?

Legal analysis: Internet infringement is illegal, not necessarily illegal, and generally requires civil liability. However, if you insult or slander others on the Internet, if the circumstances are serious, you may be suspected of insulting or slandering, and you need to bear criminal responsibility, which is illegal.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 119 Internet users and network service providers who use the Internet to infringe upon the civil rights and interests of others shall bear tort liability. Where there are other provisions in the law, those provisions shall prevail.

Article 119 If a network user uses a network service to commit an infringement, the obligee has the right to notify the network service provider to take necessary measures such as deleting, blocking or disconnecting the link. The notice shall include the preliminary evidence of infringement and the true identity information of the obligee. After receiving the notice, the network service provider shall promptly forward the notice to the relevant network users and take necessary measures according to the preliminary evidence of infringement and the type of service; If necessary measures are not taken in time, the expanded damage shall be jointly and severally liable with the network users. If the obligee causes damage to the network user or network service provider due to the wrong notice, it shall bear the tort liability. Where there are other provisions in the law, those provisions shall prevail.