Wildcards such as "*.wikipedia.org" may be used. Needs at least a top-level domain, for example "*.org".
Supported protocols: http://, https://, ftp://, irc://, ircs://, gopher://, telnet://, nntp://, worldwind://, mailto:, news:, svn://, git://, mms:// (do not add any of these in your search).