Area Code 1143 – Addis Ababa

Overview of Ethiopia's Geographic Numbering Plan

Ethiopia's national numbering plan, administered by the Ethiopian Communications Authority (ECA), follows the ITU-T E.164 international standard. Geographic numbers are identified by a National Destination Code (NDC) that corresponds to a specific city or region. The country code for Ethiopia is +251. Within Ethiopia, geographic numbers are typically 9 digits long when dialed internationally (including the NDC but excluding the trunk prefix '0'), while domestically they are dialed with a leading '0' followed by the NDC and the subscriber number.

Area Code 1143: Addis Ababa Central District

The area code 1143 is a geographic NDC assigned to the central part of Addis Ababa, the capital and largest city of Ethiopia. Addis Ababa is not only the political capital but also the diplomatic hub of Africa, hosting the African Union and numerous international organizations. The 1143 prefix covers the central business district, including key administrative areas, embassies, and major commercial zones. It is one of several NDCs used in Addis Ababa, each serving different districts or exchanges.

Dialing Formats

To call a landline number with the area code 1143 from within Ethiopia, you must dial the trunk prefix 0, followed by the area code and the subscriber number. For example, if the subscriber number is 123456, the domestic dialing format would be 011 43 123456 (note that the area code is split as 11 and 43 for readability, but the actual NDC is 1143). Internationally, callers must dial +251 1143 123456 (or 00251 1143 123456 from countries using the international prefix 00). The total length of a geographic number in Ethiopia is 9 digits, including the NDC but excluding the trunk prefix.

Overlay and Numbering Considerations

As of the latest ECA updates, Addis Ababa has not implemented an overlay code for 1143; the area code remains unique to its assigned district. However, due to the growing demand for telecommunication services, the ECA has been implementing number conservation measures and may introduce additional NDCs or overlay plans in the future. Subscribers in the 1143 area can usually keep their numbers when moving within the same exchange, but porting between different geographic areas may require a number change.

Caller Instructions

• Local callers: Dial 011 43 123456 (including the trunk prefix 0).
• International callers: Dial +251 1143 123456 (omit the leading 0).
• Emergency and special services: Always dial local emergency numbers (e.g., 911 for police, 912 for fire) without the area code.

When dialing from a mobile phone, the same rules apply; however, mobile users may need to include the area code even for local calls if they are outside the 1143 exchange area. It is always advisable to store numbers in international format (+251 1143 123456) to ensure connectivity when traveling.