If you're flying into Noumea Magenta airport, the closest Sixt car hire location to you is Nouméa Magenta Aeroport, and they can be reached on +687 26.22.80.
No, Sixt does not currently offer pickup services from Noumea Magenta airport (GEA). However, their nearest location is Nouméa Magenta Aeroport which is approx. 0.015mi away from Noumea Magenta airport and accessible by public transport.