If one got good feedback from a double-blind review, is it ever possible/ justifiable to find out who the reviewer was?

I got some impressively lengthy, detailed and mostly positive feedback in a double-blind peer review for a paper. Is it ok (or even possible), or is it against best practices (and considered taboo), to try to find out who the reviewer was - just in case you can get more feedback and share ideas related to the topic at hand?