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