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This '''FoundedIn20xx''' [[Special:Categories|category]] is for those [[wiki]]s which we are {{tag|Unknown|unable }} to determine their {{tag|Wiki Age|foundation date}}, or have not yet checked said [[WhatIsWiki|wikis]] to establish their year of foundation. For [[:Category:MediaWiki|MediaWiki]] wikis (or those using wiki engines based on MediaWiki), the year of foundation can usually be found at <tt>Special:AncientPages</tt>.