Depending on your version of iOS, follow these steps to locate your blocked list:
Currently, iOS does not allow you to view a master list of blocked numbers directly from the Phone or Messages app interface (like a "Blocked" tab). You must go through the app to view and manage this list. where can you see blocked numbers on iphone
Here’s a helpful, step-by-step report on where to find blocked numbers on an iPhone. Depending on your version of iOS, follow these
If you blocked a number specifically to stop text messages (or if you can't find the number in the Phone settings), check here. Depending on your version of iOS