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