An insurance company established in Zurich, Switzerland is classified as:

An insurance company established in Zurich, Switzerland is classified as "Alien" because it is incorporated outside of the jurisdiction in which it operates. In the context of U.S. insurance regulation, entities are categorized based on their location of incorporation: domestic companies are those incorporated within a specific state, foreign companies are those incorporated in another U.S. state, and alien companies are those incorporated outside the United States. Since Switzerland is not a part of the United States, an insurance company formed there fits the definition of an alien insurer within the U.S. insurance regulatory framework. This classification is important for understanding the regulatory requirements that such companies must adhere to when doing business in the U.S.