What does OAX stand for?

Oaxaca - Mexico - Airport symbol (OAG)

Oaxaca - Mexico - Seismograph station code, US Geological Survey (SEIS)

Object-oriented API- Application Programming Interface for XML- eXtensible Markup Language (XSAL)

Ocean Alexander Marine, Seattle, WA - Manufacturer code for watercraft hull identification number (USCG)

Operational Aviation Services - Australia - ICAO designator (FAAC)