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