002-4 Wyo. Code R. § 4-4
(a) Service of process shall be accepted on behalf of an entity for which the Registered Agent is appointed.
(b) If the Registered Agent is an entity, then a natural person having an agency relationship with the Registered Agent shall accept service of process.
(c) If an entity does not have a Registered Agent or the Registered Agent cannot with reasonable diligence be served, the entity may be served at its principal office by registered or certified mail as provided in W.S. 17-28-104.
(d) If an entity does not have a Registered Agent, the Secretary of State may accept service of process for the entity and shall forward it to the entity at its principal office by registered or certified mail as provided in W.S. W.S. W.S. 17-28-104.
002-4 Wyo. Code R. § 4-4