Area Code 3447 – Colón, Entre Ríos

Overview of Area Code 3447

Area code 3447 is a geographic National Destination Code (NDC) assigned to the city of Colón and its surrounding localities in the province of Entre Ríos, Argentina. This code is part of the national numbering plan administered by the Ente Nacional de Comunicaciones (ENACOM) under ITU-T E.164 guidelines. The region is situated in the eastern part of Entre Ríos, along the Uruguay River, bordering Uruguay. The code covers Colón, San José, Ubajay, and smaller rural communities within the Colón Department.

Dialing Formats

When calling a fixed-line number in the 3447 area from within Argentina, the national trunk prefix 0 must be dialed followed by the area code and the subscriber number. The subscriber number for this region consists of 7 digits, making the total national significant number length 10 digits (excluding the trunk prefix). For example, to call a local number such as 421-3456, you would dial:

• National call (from another Argentine city): 0 3447 421-3456
• International call (from outside Argentina): +54 3447 421-3456

When dialing locally within the same area code, the area code may be omitted, but it is always required for calls from other regions or from mobile networks.

Geographic Coverage and Administrative Jurisdiction

The 3447 code serves the Colón Department in the province of Entre Ríos. The principal city, Colón, is a significant tourist destination known for its thermal springs and historic architecture. Other important towns include San José, famous for its palace and crafts, and Ubajay, a growing agricultural community. The area is part of the Mesopotamian region of Argentina, with economic activities centered on tourism, agriculture, and small-scale manufacturing.

Overlay and Numbering Considerations

As of the latest ENACOM updates, there is no overlay code for 3447; the area code is exclusive to this geographic region. However, number portability is available for fixed lines, allowing subscribers to retain their numbers when changing service providers within the same geographic area. The numbering capacity is sufficient for the current population, with future expansions managed by ENACOM.

Caller Instructions

For callers within Argentina, always include the trunk prefix 0 when dialing from a different area code. For international callers, replace the trunk prefix with the country code +54 and drop the leading zero of the area code. Mobile-to-fixed calls require the full national number. Emergency services and directory assistance are reached via short codes (e.g., 101 for police, 100 for fire) and do not require the area code.