Telephone numbers in Nigeria

Telephone numbers in Nigeria are administered by the Nigerian Communications Commission. Fixed-line numbers are composed of a combination of an area code and a local line or subscriber telephone number. The area code consists of 20 followed by one digit (Lagos, Ibadan and Abuja) or two digits. The 20 was added to the beginning of each fixed-line area code in 2023, during which there was a grace period when both area code formats were accepted, which lasted until 1 January 2024.^[1] Local telephone numbers contain from five to seven digits, and may vary within the area code. Mobile telephone numbers start with 070, 080 or 081, 090 or 091, and are followed by eight digits. They contain eleven digits altogether and vary depending on network.