Usually its the country/government that bans website, but here the situation is reverse..Qatar has earned the wrath of Wikipedia as the latter has banned the people of the country from editing or loading any entry in Wikipedia due to what Wikipedia says excessive spam and wreckage of the content.
But there is a problem Wikipedia bans the IP address and as there is only one service provider and that also stands banned so the members will now have to take help of proxy servers to login.
This country of about 1 million people has got only one ISP service provider Qtel and the anonymous edits have been banned but the members are free to do to visit and edit the content.
What simply put Wikipedia might have done was to ban all the anonymous edits and ask the users to login before editing content.