Area Code 291 – Bahía Blanca, Buenos Aires
The phone area code for Bahía Blanca, Buenos Aires is 291 (international format +54291). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 291
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Bahía Blanca, Buenos Aires
Overview of Area Code 291
Area code 291 is a geographic National Destination Code (NDC) within the Argentine national numbering plan, assigned to the city of Bahía Blanca and its surrounding metropolitan area in the southern part of Buenos Aires Province. This region is a major port and industrial hub, and the code serves both residential and business fixed-line subscribers.
Geographic Coverage and Administration
The 291 area code covers Bahía Blanca and nearby localities including Ingeniero White, Punta Alta, and General Cerri. Administratively, it falls under the jurisdiction of the Argentine communications regulator (ENACOM). The region is served by fixed-line operators such as Telecom Argentina and Telefónica, with local loop unbundling enabling alternative providers.
Dialing Formats
For local calls within the 291 area code, subscribers dial the 7-digit subscriber number directly (e.g., 456-7890). For national long-distance calls from other Argentine area codes, callers must dial 0 + 291 + subscriber number (e.g., 0 291 456-7890). International callers from outside Argentina should dial the country code +54, then the area code 291 (without the leading 0), followed by the 7-digit subscriber number: +54 291 456-7890.
Overlay and Numbering Considerations
Currently, there is no overlay code for Bahía Blanca; the 291 code is exclusive to this geographic area. However, due to growing demand, ENACOM periodically reviews numbering resources. Subscribers should note that the national trunk prefix '0' is only used for domestic long-distance calls, not for international dialing.
Caller Instructions
- Local callers (within 291): dial the 7-digit number directly.
- National callers (outside 291): dial 0, then 291, then the 7-digit number.
- International callers: dial +54 291 followed by the 7-digit number.
When receiving calls from abroad, the number will appear as +54 291 XXX XXXX. It is important to omit the leading '0' of the area code when dialing from outside Argentina. For VoIP users, the same international format applies, ensuring proper routing through IP networks.