Area Code 3437 – La Paz, Entre Ríos

Overview of Area Code 3437 (La Paz, Entre Ríos)

Area code 3437 is a geographic National Destination Code (NDC) assigned to the city of La Paz and its surrounding localities in the Entre Ríos Province of Argentina. This code is part of the Argentine national numbering plan, which follows ITU-T E.164 recommendations. The region is situated in the northeastern part of the country, along the Uruguay River, bordering Uruguay. La Paz serves as the administrative center of the La Paz Department and is known for its agricultural production and river port activities.

Geographic Coverage and Administrative Jurisdiction

The 3437 area code covers the urban and rural areas within the La Paz Department, including the city of La Paz and nearby towns such as Piedras Blancas, Santa Elena, and Villa Alcaraz. The region is under the jurisdiction of the provincial government of Entre Ríos, with its capital at Paraná (area code 343). La Paz is located approximately 250 kilometers north of Paraná and about 500 kilometers north of Buenos Aires.

Dialing Formats and Caller Instructions

For local calls within the same area code (3437), subscribers can dial the 7-digit local number directly. However, for calls from other Argentine provinces or from abroad, the full national or international format must be used.

• Local calls (within 3437): Dial the 7-digit subscriber number (e.g., 42-1234).
• National long-distance calls (from other Argentine area codes): Dial 0 + 3437 + 7-digit subscriber number (e.g., 0-3437-42-1234).
• International calls (from outside Argentina): Dial the international access prefix (e.g., 00 from most countries) + 54 (Argentina country code) + 3437 + 7-digit subscriber number (e.g., 00-54-3437-42-1234).

When calling from a mobile phone in Argentina, the same national format applies, but the leading '0' is often omitted when dialing from a mobile device if the carrier supports direct dialing; however, the recommended format is still 0-3437-XXXXXXX for clarity.

Overlay and Numbering Considerations

As of the latest ITU-T and ENACOM (Ente Nacional de Comunicaciones) updates, there are no overlay codes in the 3437 area. The area code is exclusively geographic and is not subject to number portability for fixed lines in the same way as mobile numbers, though fixed-line portability is available within the same geographic area. The number length for local subscribers is 7 digits, which is standard for Argentine fixed-line numbers in smaller urban centers.

Practical Tips for Callers

For international callers, it is essential to replace the '+' with the appropriate international prefix from your country (e.g., 011 from the US, 00 from most European countries). Always verify the local number length, as some older numbers may have fewer digits; however, the current standard is 7 digits after the area code. For businesses or individuals traveling to La Paz, it is advisable to store numbers in international format (+54 3437 42-1234) to avoid confusion when roaming.