Browse RPM repositories

Is it possible to make the RPM/DEB repositories browsable? Currently, my browser just displays:

http://packages.elastic.co/logstash/2.1/centos

<Error> <Code>NoSuchKey</Code> <Message>The specified key does not exist.</Message> <Key>logstash/2.1/centos</Key> <RequestId>747AC88A9E6309BD</RequestId> <HostId> szXnlw6zbiVyPUOf24GbeYCO+y1o5nIdrbhKBLeYh9FRlpT5TGLxsMSqOW5xV/gt1KoZP6Qzdg8= </HostId> </Error>