Area Code 43 – Liège
The phone area code for Liège is 43 (international format +3243). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 43
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Liège
Geographic Coverage and Administration
The Belgian national destination code +32 43 is a geographic area code assigned to the province of Liège, located in the Walloon Region of eastern Belgium. This code covers the city of Liège itself and its surrounding communes, including Seraing, Herstal, Ans, and Grâce-Hollogne. The prefix is administered by the Belgian Institute for Postal Services and Telecommunications (BIPT), which oversees the national numbering plan under the ITU-T E.164 standard.
Dialing Formats
For local callers within Belgium, the area code is dialed with a leading trunk prefix 0, followed by the subscriber number. The complete national format is 043 XX XX XX, where the subscriber number consists of seven digits. When dialing from abroad, the trunk prefix is omitted, and the country code is used, resulting in the international format +32 43 XX XX XX. For example, a local call to a number in Liège would be dialed as 043 12 34 56, while an international caller would dial +32 43 12 34 56.
Numbering Structure and Overlay
Belgium uses a closed numbering plan, meaning that the area code and subscriber number are always dialed together, even for local calls. The subscriber number length is fixed at seven digits for geographic codes in Belgium. As of the latest BIPT updates, there is no overlay code for the Liège region; the 043 code remains the sole geographic area code for this province. However, number portability allows subscribers to retain their 043 numbers when switching operators, even if they move outside the geographic area, though this does not affect the dialing format.
Caller Instructions
For callers within Belgium, always include the trunk prefix 0 before the area code when dialing any Belgian fixed-line number. For callers from other countries, replace the trunk prefix with the Belgian country code +32 and drop the leading zero. Ensure you use the correct international exit code for your country (e.g., 00 from most European countries, 011 from North America). When dialing from a mobile phone, you can use either the international format with a plus sign or the local format, but the international format is recommended for clarity.