On a Facebook business page, you can also ban users from seeing your content. When you halt a user from viewing your page, his/her Facebook username is listed in your page’s Banned Users list, accessible from the Admin panel. See: How Do You See Your Blocked List on Facebook?
1. Log in to your Facebook account
2. Click on the page you want to view banned users. This is located at the left column of any Facebook homepage
3. Then click the arrow next to the “Edit Page” button in the top menu. See: How Do You See Your Blocked List on Facebook?
4. Click the “Banned Users” option from the drop-down menu to open the list of users who are blocked from your page.
Note that you can also unblock previously banned users from this list. See: Facebook Block List | How to Find Block List on Facebook
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