According to 29 USCS § 1002 (Title 29; Chapter 18; Employee Retirement Income Security Program; Protection of Employee Benefit Rights; General Provisions), the term "administrator" means--

(i) “the person specifically so designated by the terms of the instrument under which the plan is operated;

(ii) if an administrator is not so designated, the plan sponsor; or

(iii) in the case of a plan for which an administrator is not designated and a plan sponsor cannot be identified, such other person as the Secretary may by regulation prescribe.”