GitHub 宣佈支援 HTTP Code 451 了:「The 451 status code is now supported」。也就是 RFC 7725 的「An HTTP Status Code to Report Legal Obstacles」。
目前會把因為 DMCA takedown notice 下架的內容以 HTTP Code 451 標出:
The GitHub API will now respond with a 451 status code for resources it has been asked to take down due to a DMCA notice.
HTTP Code 451 的點子出自「華氏 451 度」這本書,表示紙的燃點。