R studio library fetching

Hi
I have installed r studio in my organisation non prod server but it is not able to fetch library, and I saw that some website were not whitelisted , so can anyone tell me what all website need to be whitelist to run r studio smoothly

The question is unclear to me. Do you mean that install.packages() fails to download package from the mirror?

In that case, this is defined by the repo argument of install.packages(). Use getOption("repos") to see which mirror is currently you default, you can find here a list of available mirrors.