How to learn about you blocked a specific person
To check if you blocked someone on Facebook, go to your Settings & Privacy, then select Settings. On the left menu, click Blocking. You will see a list called "Block users" with the names or profiles of everyone you have blocked. If the person's name appears there, you blocked them.
This list shows only people you actively blocked yourself — not people who blocked you. Facebook does not tell you who has blocked you, and there is no way to see that list. You can only see the people you chose to block.
The blocked list is private. Other people cannot see who you have blocked, and blocked people cannot see that they are on your list. They straightforward cannot find your profile, message you, or see your posts.
Key Takeaways
- Your blocked list is in Settings & Privacy > Settings > Blocking, and it shows only people you blocked yourself.
- Facebook does not show you who has blocked you, and there is no workaround to find that information.
- When you block someone, they cannot see your profile, send you messages, or find your posts in search results.
- Unblocking someone is reversible — you can block them again later if you change your mind.
What happens when you block someone
When you block someone on Facebook, they lose access to your profile and your activity. They cannot see your posts, photos, or friend list. They cannot send you messages or friend requests. If you were already friends, the friendship ends when ready and they cannot see that you unfriended them — they only see that they cannot access your profile.
Blocked people also cannot find you through Facebook search. If they try to visit your profile directly using a link, they will see a message saying the profile is not available. However, if you comment on a public post or a mutual friend's post, they may still see your name and comment, depending on the privacy settings of that post.
Blocking is different from unfriending. When you unfriend someone, they can still see your public posts and search for your profile — you just remove them from your friends list. Blocking is stronger: it hides your entire profile from that person.
How to unblock someone
To unblock someone, return to Settings & Privacy > Settings > Blocking. Find the person's name in the "Block users" list and click the Unblock button next to their name. Confirm the action when Facebook asks you to confirm.
Once you unblock someone, they can see your profile and send you messages again. Unblocking does not automatically add them back to your friends list — you remain unfriended unless you send them a friend request or accept one from them. You can block the same person again at any time if you change your mind.
Blocking on mobile versus desktop
The blocking process is the same on Facebook's mobile app and desktop website, but the menu path is slightly different. On the mobile app, tap the three horizontal lines (menu icon) at the bottom right, scroll down to Settings & Privacy, tap Settings, scroll to Blocking, and tap it. You will see the same "Block users" list.
On desktop, the path is identical: Settings & Privacy > Settings > Blocking on the left sidebar. Both versions show you the same list of blocked people, so your blocks sync across devices. If you block someone on your phone, they will be blocked when you check Facebook on a computer.
What blocked people might notice
A blocked person may eventually realize they are blocked, though Facebook does not send them a notification. They might notice that they cannot find your profile, that old messages from you have disappeared, or that they cannot see your comments on mutual friends' posts. Some people try to visit a blocked profile and see the "profile not available" message, which signals they have been blocked or the account was deleted.
However, blocked people cannot see your blocked list, and they cannot confirm for certain that you blocked them — they only know they cannot access your profile. If they create a new account or ask a mutual friend to check your profile, they can see that you still exist and are active, which confirms the block rather than a deletion or deactivation.
Blocking versus other privacy controls
Facebook offers several privacy tools beyond blocking. Restricting someone lets them stay on your friends list but limits what they can see — they can only see posts you mark as public. Unfriending removes them from your friends list but they can still see your public posts and profile. Muting hides their posts from your feed without them knowing, but they remain your friend.
Blocking is the strongest option and is best used when you want complete separation from someone. Restricting is useful if you want to keep someone as a friend but limit their access. Muting is the gentlest option if you straightforward do not want to see their posts but do not need to hide your profile from them.
Frequently Asked Questions
Can I block someone without them knowing?
Yes. Facebook does not notify people when you block them. They will only discover it if they try to visit your profile, search for you, or realize they cannot see your posts anymore. You can block someone privately without any notification being sent.
If I block someone, do our old messages disappear?
Your messages remain in your inbox, but the blocked person cannot see them. If they had saved your messages, those remain on their end. Blocking does not delete past conversations — it only prevents future contact and hides your profile from them going forward.
What if I block someone by accident?
You can unblock them when ready by going to Settings & Privacy > Settings > Blocking, finding their name, and clicking Unblock. There is no waiting period. Once unblocked, they can message you and see your profile again, though you will not be friends unless you send a friend request.
Can I see who tried to message me after I blocked them?
No. Once someone is blocked, you cannot see any messages they tried to send. Their messages do not arrive in your inbox. If you unblock them later, you still will not see messages they sent while blocked — those are lost.
Does blocking someone on Facebook block them on Instagram or Messenger?
Blocking on Facebook does not automatically block them on Instagram or Messenger, even though Facebook owns both platforms. You must block them separately on each app if you want to block them everywhere. However, blocking on Messenger does block them on Facebook Messenger specifically.