How do I know that the newly bought mobile phone number is a new number segment?

There are rules for signaling in the new section. The new number segment is a new number segment for mobile operators announced by the state, so it is a short message number. It's different from the second half of the old signal, and you have to break it a little. You can find it on the Internet. Eliminate those warm ones and you will know if you are a new number. In fact, it is worthwhile to drill now. Like the original 137, his previous new number is worthless anyway. Just compare Simon's mobile phone number. How will we know in the future?