Area Code 3329 – San Pedro, Buenos Aires

The Argentine national dialing plan, governed by ENACOM under ITU-T E.164 recommendations, assigns geographic area code 3329 to the northern part of Buenos Aires Province. This code serves the city of San Pedro and its surrounding rural districts, including the towns of Santa Lucía, Río Tala, and Gobernador Castro. San Pedro is a significant river port and agricultural hub on the Paraná River, approximately 170 km northwest of Buenos Aires city.

Geographic Coverage and Administration

Area code 3329 is a geographic National Destination Code (NDC) that routes calls to fixed-line PSTN and VoIP subscribers within the San Pedro Partido. The region is part of the Buenos Aires Province numbering area, which is subdivided into multiple NDCs to optimize routing and local call pricing. The code covers an area of about 1,000 km², with a population of roughly 60,000 inhabitants.

Dialing Formats

For local calls within the 3329 area, subscribers dial the 7-digit subscriber number only. For example, to call a fixed line in San Pedro with the number 456-7890, a local caller simply dials 456-7890.

For national long-distance calls from other Argentine provinces, callers must dial the trunk prefix 0, followed by the area code 3329, and then the subscriber number. Thus, from Buenos Aires city, the same number would be dialed as 0 3329 456-7890.

International callers from outside Argentina must dial their country's international access code (e.g., 011 from the US, 00 from most European countries), followed by Argentina's country code 54, the area code 3329 (without the leading 0), and the subscriber number. The international format is +54 3329 456-7890.

Overlay and Numbering Plan Considerations

As of 2025, there is no overlay code for 3329; the area code remains the sole NDC for the region. However, ENACOM has implemented number portability for fixed lines, allowing subscribers to retain their numbers when changing operators within the same geographic area. The subscriber number length is 7 digits, and the total length of a national significant number (NSN) is 10 digits (area code + subscriber number), excluding the trunk prefix.

Caller Instructions

For local callers, dialing the 7-digit number is sufficient. For callers from other regions in Argentina, always include the trunk prefix 0 and the area code. For international callers, always drop the leading 0 and use +54 3329. Be aware that calls to fixed lines are typically charged at local or national rates depending on the caller's location, while calls from mobile phones may be subject to different tariffs.