Huo Shaoheng nodded while he moved the cursor to the invalid phone number under the invalid IP address, "This phone number is supposedly an international number, but a four-digit phone number cannot possibly be an international number. It can't even be a domestic number. But some extensions can be four digits."
As everyone knew, extensions could only be connected within a unit's phone line, so it was impossible to directly connect a call using an extension.
Gu Nianzhi had never seen this phone number before, so she was very shocked, "Really? So what's going on then? Who used this phone number?"
