Area Code 529 – Casablanca

Geographic Coverage and Administrative Jurisdiction

The area code 529 is a geographic National Destination Code (NDC) assigned to the city of Casablanca, the economic capital of Morocco. Casablanca is the largest city in the Kingdom and serves as the primary business and financial hub, hosting the headquarters of numerous national and international companies, banks, and industrial enterprises. The code covers the entire administrative prefecture of Casablanca, including the districts of Anfa, Aïn Sebaâ, Sidi Bernoussi, and the greater metropolitan area. As part of the national numbering plan, this code is managed by the Agence Nationale de Réglementation des Télécommunications (ANRT), the Moroccan regulatory authority.

Dialing Formats and Caller Instructions

For local callers within Morocco, the number is dialed as a 10-digit national significant number (NSN), which includes the trunk prefix 0 followed by the area code and the subscriber number. For example, a Casablanca landline number would be dialed as 0529-XXXXXX from within Morocco. When calling from outside Morocco, the international format is used: +212 529 XXXXXX, where the leading zero is dropped and the country code +212 is added. Callers from abroad must replace the trunk prefix with the international access code of their country (e.g., 00 from most European countries) followed by 212 and the remaining digits.

Overlay and Numbering Considerations

Morocco has implemented an overlay plan for Casablanca, meaning that multiple area codes may serve the same geographic region. In addition to 529, the codes 522 and 523 are also assigned to Casablanca, allowing for an increased supply of telephone numbers without changing existing numbers. This overlay requires that all calls within the same overlay area be dialed using the full 10-digit national number, even for local calls. Therefore, when calling a Casablanca number from another Casablanca number, you must dial the area code plus the subscriber number (e.g., 0529-XXXXXX). This ensures proper routing and avoids confusion between different area codes.

Technical and Regulatory Notes

Numbers under the 529 code are primarily used for fixed-line PSTN services, but they may also be assigned to VoIP providers offering fixed telephony services. The ANRT enforces strict number portability regulations, allowing subscribers to retain their numbers when switching operators within the same geographic area. However, porting does not change the geographic association of the code. For international callers, it is essential to verify the correct country code and area code to avoid misdialing, as other Moroccan cities have different codes (e.g., Rabat uses 537, Marrakech uses 524).