Hey Michael,
Thanks for your patience. I've heard back from the engineers and it looks like like co.pt, co.nr, and co.ee are registrars and not official cctlds. Technically, those co.pt, co.nr, and co.ee would be considered root domains that sell hosting to "subdomains" such as blackjackonline or roleta, etc. Given this, we are actually presenting root domain info correctly.
We are planning on creating subdomain based metrics for pages like these to make the information more relevant to the site being researched in the future. I hope this clears things up a bit. Let me know if you have any other questions.
-Chiaryn