On March 30, 2010, searching via all Google search sites in all languages was banned in mainland China; any attempt to search using Google resulted in a DNS error. Initial reports suggested that the error was caused by a banned string (RFA, as in "Radio Free Asia") being automatically added to Google search queries upstream of user queries, with prominent China journalists disagreeing over whether the blockage was an intentional and high-level attempt to censor search results. Other Google services such as Google Mail and Google Maps appeared to be unaffected. Xiao Qiang, director of the China Internet Project at UC Berkeley and founder of the China Digital Times, noted that the ban in mainland China could eventually block all access to Google sites and applications if the Chinese government wanted.