No, your own phone number.
Say you're at home, you have a landline, and you don't know what your own phone number is. How do you get it? You call someone with caller ID, and ask them to tell you what number you called from.
Say you're at home, you have a landline, and you don't know what your own phone number is. How do you get it? You call someone with caller ID, and ask them to tell you what number you called from.
Of course, I haven't had a land line in years and my cell phones tell me their numbers in the settings.
So like I said, you call someone to get your number. Like how you google what your ip address is.