Casnan Aruba. Welcome to casnan.com. We are proud to be the Biggest Real Estate Portal on Aruba with 2000+ listings and several Independent Brokers to satisfy your Real Estate needs in the Caribbean. Look no further than Casnan to simplify your search and find the best property for your family or business needs. Our online real estate overview is presented in such a way that you will be able to find exactly what you are looking for in the blink of an eye, and a click of the mouse. Easy as A B C.