OMA operates and manages 13 international airports in the north and central regions of Mexico. OMA's airports serve Monterrey, M?xico's third largest metropolitan area, the tourist destinations of Acapulco, Mazatlan, and Zihuatanejo, and nine other regional centers and border cities. OMA's airports fulfill international safety norms and have received environmental compliance certificates. Their corporate name is Grupo Aeroportuario del Centro Norte, S.A.B. de C.V., and they serve their passengers, their airlines, and their business partners under the commercial name OMA.