Ecobank, whose official name is Ecobank Transnational Inc. (ETI), is a pan-African banking conglomerate, with banking operations in 36 African countries. It is the leading independent regional banking group in West Africa and Central Africa, serving wholesale and retail customers. It also maintains subsidiaries in Eastern and Southern Africa. ETI has representative offices in Angola, China, Dubai, France, South Africa, and the United Kingdom. ETI is a large financial services provider with offices in 36 countries around the world, and presence in 36 sub-Saharan countries. As of December 2012, ETI's customer base was estimated at 13.7 million, with 9.6 million (70.2%), located in Nigeria, the continent's most populous nation. ETI's branch network numbered 1,305, with 1,981 networked ATMs.