Dimension 404 is an American science fiction 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, with each episode being its own self-contained television film. The series is heavily inspired by The Twilight Zone and The Outer Limits. Its name is taken from the 1950s radio program Dimension X with 404 added on the end to signify its content is based on the internet generation. The number 404 is a reference to the HTTP status code signifying an error due to a webpage not being found.