Finding out the number of the person who texted you is easy. Sign into My Verizon and look at your usage. Look at messaging and click to expand for details. The number should be displayed. Hope that helps.
I appreciate the info but for some reason i can not expand for details on the usage page it just shows total usage.
if you are not the account owner, you can not see the detail. Or if you are on a prepaid account, you can not view the detail either.