Joke Collection Website - Public benefit messages - Why can't mobile phone information be blacklisted?

Why can't mobile phone information be blacklisted?

The other party's short message is not sent by mobile phone, but by network or pseudo base station. The number in front of each published short message is the same, but the number behind it will change automatically. Even if a number is blacklisted, the text message sent after the tail number is changed will still be received.