South Dakota uses the Model Registered Agents Act at SDCL chapter 59-11, distinguishing commercial agents listed with the state from noncommercial agents, who may be individuals, entities, or whoever holds a designated position in the company. Filings must state an actual street address or rural route box number in the state. Losing an agent is not a ground for administrative dissolution. Instead, an agentless entity is served by mail to its governors by name at the address on its most recent annual report, so a stale report creates real exposure.