from the rs.internic.net whois db:
 
MCI Mail Operations (MCIMAIL-DOM)
   MCI Telecommunications, Inc.
   501 63rd St.
   Downers Grove, IL 60516
 
   Domain Name: MCIMAIL.COM
 
   Administrative Contact, Technical Contact, Zone Contact:
      Ryder, Ted  (TR1112)  [log in to unmask]
      (719) 592-1413