Area Code 27 – Chlef
The phone area code for Chlef is 27 (international format +21327). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 27
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Chlef
Geographic Overview
The area code 27 is the National Destination Code (NDC) assigned to the wilaya of Chlef in Algeria. Chlef is located approximately 200 kilometers west of Algiers and serves as an important administrative and agricultural hub in the north-central region of the country. The code covers the city of Chlef itself, as well as surrounding towns and municipalities within the wilaya, including Oued Fodda, Boukadir, and Tenes.
Dialing Formats
To call a fixed-line number in Chlef from within Algeria, subscribers must dial the trunk prefix 0 followed by the area code 27 and the subscriber's 7-digit local number. The complete national format is: 0 27 XX XX XX XX (where each X represents a digit of the local number). For example, a local number such as 12 34 56 78 would be dialed as 027 12 34 56 78 from any other region in Algeria.
For international callers, the country code for Algeria is +213. The leading '0' of the national prefix is omitted. Therefore, the same number would be dialed from abroad as +213 27 12 34 56 78. It is essential to drop the initial '0' when placing an international call.
Geographic Allocation and Numbering
Area code 27 is a geographic code allocated by the Algerian Ministry of Post and Telecommunications and the Regulatory Authority for Post and Electronic Communications (ARPCE). It follows the ITU-T E.164 international numbering plan. The code is exclusively assigned to fixed-line services (PSTN) within the Chlef wilaya. While mobile numbers in Algeria use distinct prefixes (e.g., 05, 06, 07) and are non-geographic, fixed-line numbers under 27 are tied to the physical location of the line.
Calling Instructions
- Local callers (within Algeria): Dial 027 followed by the 7-digit subscriber number. The '0' is required for all national calls, including those made from mobile phones.
- International callers: Dial your country's exit code (e.g., 00 from most countries, 011 from the US/Canada), then 213 (Algeria's country code), then 27, and finally the 7-digit local number. Do not include the leading '0'.
Important Notes
As of the latest numbering plan updates, there are no overlay codes in Chlef; the area code 27 is unique for the wilaya. However, number portability may allow subscribers to retain their fixed-line numbers when changing operators, but the geographic significance remains. For VoIP or satellite services, the routing may differ, but the dialing format remains the same for end users.