Where can one find a list of alien companies and Lloyd syndicates with their city or country of domicile?

The correct choice is the International Insurers Department Plan of Operation, as this resource specifically contains detailed information about alien companies and Lloyd syndicates, including their place of domicile. Alien companies are insurance firms that are formed under the laws of a foreign country, and Lloyd's syndicates are groups of investors that come together to underwrite insurance risks at Lloyd's of London.

The International Insurers Department Plan of Operation is designed to facilitate regulation and oversight of foreign insurance entities operating within a given jurisdiction, providing comprehensive details on various insurance providers, making it the go-to source for such information.

Other resources might offer information related to insurance but do not specifically focus on the comprehensive listing of alien companies and Lloyd syndicates along with their domicile locations as the International Insurers Department Plan does. For example, the State Insurance Department could provide regulatory oversight and general information on all licensed insurers within a state but may not specifically list alien companies. Similarly, the Surplus Lines Association Directory is useful for surplus lines operations but may not encompass detailed global information about alien insurers like the dedicated international data source.