Corona Ads Fill Rate and Countries

Is there any way to see if Corona Ads has a country breakdown of the ad requests? I released my game and did an ad campaign starting this afternoon. I saw that I had a 0.74% fill rate  from 1086 ad requests (8 total impressions).

It would be good to know what those countries are so that I can possibly use a different ad provider for those countries with an astronomically low fill rate.