ni akole ninu ISO 3166-2, apa ooagun ISO 3166 ti International Organization for Standardization (ISO) te jade si iwe to se itumo awon amin oro fun oruko awon ipin sabe koko awon orile-ede Naijiria .ItokasiISO 3166.. 
Ni akọọlẹ ninu isọ 3166-2, apa ọ̀págun isọ 3166 ti International Organization for Standardization (iṣọ) tẹjadesí to ṣètumọ̀ awọn ami fun orukọ awọn ipin koko koko awọn orilẹ-itọkasi.isọ 3166.. 