missile address

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

ICBM address
missile address

   <networking, humour> (Or "missile address") The form used to
   register a site with the {Usenet} mapping project includes a
   space for longitude and latitude, preferably to seconds-of-arc
   accuracy.  This is actually used for generating
   geographically-correct maps of {Usenet} links on a plotter;
   however, it has become traditional to refer to this as one's
   "ICBM address" or "missile address", and many people include
   it in their {sig block} with that name.  (A real missile
   address would include target altitude.)

   [{Jargon File}]

   (1994-12-15)