Does anyone know what happened to https://www.id3.org/ ?

Returns 500 Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator at [no address given] to inform them of the time this error occurred, and the actions you performed just before this error. More information about this error may be available in the server error log. Apache/2.4.52 (Ubuntu) Server at www.id3.org Port 80

This domain used to host ID3 tag info at

https://www.id3.org/id3v2.3.0.html