On the summary page, does it have a pentagon symbol by the shiny symbol? And you could also check the second page of the summary. At the top it would tell you where it was hatched at if it were Kalos bred, if not it'll say it traveled through time or something to that extent.
I see that you're offering a 5IV shiny Ninetales. I'm just curious about it. Is it Kalos bred, what egg moves does it have, and are the IVs perfect? :P