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