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

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