Why are there virtual numbers that cannot be called back when booking hotels on Ctrip?

Protect privacy. In order to protect the privacy of both parties and prevent phone harassment, Ctrip uses virtual numbers when booking hotels. In fact, virtual numbers are essentially the same as ordinary physical numbers, and are used for daily communication functions such as daily calls and text messages. There is no need to open a physical mobile phone card for virtual numbers, which is convenient for users to use at any time. Especially for some temporary account use scenarios, it can well protect the security of the main number information and avoid harassment.