There are two related topics, one about email and the other caller ID spoofing. I have moved your topic accordingly.
No, because ‘we’ do not know their real number from what ‘we’ see in the text or email. Some of them are very sophisticated at hiding their real whereabouts. Like whack-a-mole, if they are blocked it will only take them a minute to resurrect themselves at a different point-of-presence.
Regarding the numbers you see on caller id, this topic may be insightful.
