In recent years, with the increasing number of missions to conduct human space exploration, the Moon is considered as an important milestone to evaluate new technologies, showing the need for navigation capabilities for low lunar orbiters, lunar landers, and human missions. In this scenario, the European Space Agency vision is represented by the Moonlight initiative, which aims to develop a European-led provision of communication and navigation services to support the next generations of institutional and private lunar exploration missions. In this context, the importance of developing a high-level definition of optimized constellation architectures is even more evident. Inspired by Moonlight, this research deals with the design of optimal constellations around the Moon, able to guarantee navigation and communication services for a local area on the lunar surface and to allow communication with the Earth.