HTTP 451

HTTP 451 (also known as Unavailable For Legal Reasons) is a special status code that is used when a web resource or website is blocked or removed due to legal reasons. This code is like a warning sign that something on the website might not be allowed by law. For example, if a website contains hate speech, or if it's been taken down due to copyright infringement, then the HTTP 451 code could be used to alert users that the website cannot be accessed.