https://support.learndash.com/ - This site is where LearnDash license and updates are provided. http://translations.learndash.com - This site is where LearnDash hosts language translations for core and add-on plugins. If possible would be easier to just add the learndash.com domain. https://api.bitbucket.org and https://bitbucket.org - These are used to host the Add-on plugins update and download. And again if easier to just add the bitbucket.org domain.