(h) Serving a Corporation, Partnership, or Association. Unless federal law provides otherwise or the defendant’s waiver has been filed, a domestic or foreign corporation, or a partnership or other unincorporated association that is subject to suit under a common name, must be served:
(1) in a judicial district of the United States:
(A) in the manner prescribed by Rule 4(e)(1) for serving an individual; or
(B) by delivering a copy of the summons and of the complaint to an officer, a managing or general agent, or any other agent authorized by appointment or by law to receive service of process and- if the agent is one authorized by statute and the statute so requires- by also mailing a copy of each to the defendant; or
(2) at a place not within any judicial district of the United States, in any manner prescribed by Rule 4(f) for serving an individual, except personal delivery under (f)(2(C)(i).