Are Fax machines covered by the National Do No Call Registry?

I keep getting spam sent to my fax machine. I registered a machine with the Do not call registry once before nad the faxes went away. But the fax machines I recently registereed keep getting spam faxes

yes, there are too! I did all my numbers…home, cell, fax….because no one know what the numbers are!!

http://www.realtor.org/vlibrary.nsf/pages/dncupdate

http://www.faxrecoverysystems.com/

http://www.fcc.gov/cgb/policy/telemarketing.html