page_title: Registry page_description: Definition of an Registry page_keywords: containers, concepts, explanation, image, repository, container # Registry ## Introduction A Registry is a hosted service containing [*repositories*]( ../repository/#repository-def) of [*images*](../image/#image-def) which responds to the Registry API. The default registry can be accessed using a browser at [Docker.io](http://index.docker.io) or using the `sudo docker search` command. ## Further Reading For more information see [*Working with Repositories*]( ../use/workingwithrepository/#working-with-the-repository)