UUCPNET

from The Free On-line Dictionary of Computing (8 July 2008)
UUCPNET

   The international {store and forward} network consisting of
   all the world's connected {Unix} machines (and others running
   some clone of the {UUCP} software).  Any machine reachable
   only via a {bang path} is on UUCPNET.  See {network address}.

   [{Jargon File}]
    

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