ni akoole ninu ISO 3166-2, apa opagun ISO 3166 ti International Organization for Standardization (ISO) tejadesiwe to setumo awon amioro fun oruko awon ipinsabe koko awon orile-ede.ItokasiISO 3166.. 
To avoid ìgborositional Ìparapọ̀ problems and to aid 5D who wQn spedélẹ̀ additional code elements for the functioning of their coding systems, the iso 3166/ma, when yè, reserves these codes which it undertakes not to use for other than únfied purposes during a limited or índé period of time..  