Central Bank of Nigeria: Abuja Contact Details. The Central Bank of Nigeria (CBN) runs the two domains cenbank.org and cbn.gov.ng run side by side as interchangeable domain names for all CBN e-mail accounts. They open for business from Monday to Friday except on national holidays. Our working hours are from 8:00a.m. – 4:00p.m. Central Bank of Nigeria: Abuja […]