Dimension 404 is an American science fiction black comedy anthology series created by Desmond "Dez" Dolly and Will Campos, and co-created by Dan Johnson and David Welch. It began airing on April 4, 2017 on the streaming service Hulu. The series is produced by RocketJump and Lionsgate Television. The series is heavily inspired by The Twilight Zone and The Outer Limits. Its title is taken from the 1950s radio program Dimension X and the HTTP status code 404, which signifies an error due to a webpage not being found.