Language codes at wikieducator.org
Fragment of a discussion from User talk:Philbartle
correction: I have seen that www, el, es, fr, he, hi, pt, ru are valid subdomains. « לערי ריינהארט » at commons facebook wikieducator.org 20:22, 27 November 2009 (UTC)
What I do is go to Wikipedia, and click on a language, the URL should start with the correct two letters for that language.
Philbartle (talk)