We check this website, now coba-coba.xyz is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is coba-coba Down Right Now? - NO! coba-coba is up!
If you have problem with access to site coba-coba, and domain coba-coba.xyz is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).