Huit de ces AN fonctionnent également comme des Centres de ressources SALTO ( Support for Advanced Learning and Training Opportunities - Soutien aux opportunités d’apprentissage et de formations avancés), qui appuient toutes les AN en développant des compétences géographiques ou thématiques spéciales.
Eight NAs, in addition to their mission as NAs for their countries, constitute SALTOs (Support, Advanced Learning and Training Opportunities) - Resources Centres providing support for all the NAs by developing special areas of geographic or thematic competence.