What does error code 451 mean?

　What does error code 451 mean? Page error code representative reason

People who often surf the internet will encounter a 4XX series of HTTP error codes, such as 404 Not found the server is not found, 403 forbidden the site denied access.

According to foreign media reports, the Internet Engineering Steering Committee (IESG) recently officially approved a new HTTP error code "451" to represent "for legal reasons to be officially reviewed" content.

The Internet Engineering Steering Committee (IESG), which is responsible for setting standards for network operations, said in a statement, "The code means that it is officially denied access for legal reasons." IESG also suggested that the official on the Web page to indicate who the agency blocked access to this page, and to specify the reasons.

Tim Bris, a former Google engineer who proposes to use the 451 code, said, "in the proposal, the 451 error code was also suggested to list specific legal restrictions and what categories of Web sites they belonged to, while the representative was unable to access them for legal reasons." ”

One of the heads of the Internet Engineering Task Force (IETF), Mark Nottingham, welcomed the introduction of this error code and said "it can be used immediately." But he adds that the Internet Engineering team cannot guarantee that all network service providers will use the code when they encounter legal reasons.