How do あなた know if you've been blocked?

What you've described is exactly how あなた find out you've been blocked. あなた know a page is there, but あなた can't see it または find it in search, and other users can 確認 that it is there. That's how being blocked works.

Here are three tips of finding out if your friend has blocked あなた on Facebook:

1.)Ask mutual フレンズ if the person whom あなた suspect has blocked あなた is still on their フレンズ list. If they can view his または her profile, it is a sign that あなた have been blocked. Since あなた have already confirmed this, then yes, あなた have been blocked.

2.)Go through old conversations with that person. Click the 'Actions' button and select レポート Conversation. If あなた see 'Blocked' 次 to the person's name, this means that あなた have been blocked によって the person. If あなた see 'Report' instead of 'Blocked' then it implies that the person has deactivated the account.

3.)Access the person's プロフィール link. If あなた get a "Page あなた requested was not found." it is either あなた were blocked または the account has been deactivated. Try to access the プロフィール link with a new account または another account to know for sure.

Source: link

Lucas Chad blocked me

Because when I look for my friend his プロフィール comes up with a blue square at it says This プロフィール is locked