Area Code 3858 – Termas de Río Hondo, Santiago del Estero
The phone area code for Termas de Río Hondo, Santiago del Estero is 3858 (international format +543858). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 3858
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Termas de Río Hondo, Santiago del Estero
Overview of Area Code 3858
Area code 3858 is a geographic National Destination Code (NDC) assigned to the city of Termas de Río Hondo and its surrounding areas in the province of Santiago del Estero, Argentina. This code is part of the national numbering plan administered by the Ente Nacional de Comunicaciones (ENACOM), following ITU-T E.164 recommendations.
Geographic Coverage
The 3858 area code covers Termas de Río Hondo, a renowned thermal resort city located in the department of Río Hondo, in the eastern part of Santiago del Estero province. The code also serves nearby localities and rural areas that rely on the same local exchange. Termas de Río Hondo is a major tourist destination, famous for its hot springs and the Termas de Río Hondo Grand Prix circuit.
Dialing Formats
For local calls within the 3858 area, subscribers can dial the 7-digit subscriber number directly, omitting the area code. For national long-distance calls from other Argentine cities, the format is:
- 0 (trunk prefix) + 3858 (area code) + XXXXXXX (subscriber number).
For international calls from abroad, the format is:
- +54 (country code) + 3858 (area code) + XXXXXXX (subscriber number).
Example: If the local number is 421-2345, dialing from the United States would be +54 3858 421-2345.
Numbering and Overlays
Subscriber numbers within 3858 are 7 digits long, resulting in a total of 10 digits when including the country code and area code (excluding the trunk prefix). As of the latest ENACOM updates, there are no overlay codes in this region; the area code 3858 is unique for Termas de Río Hondo. However, users should be aware that neighboring areas may use different area codes, such as 3854 for La Banda and 385 for Santiago del Estero city.
Caller Instructions
Local callers: Dial the 7-digit subscriber number directly. National callers from outside the area must include the trunk prefix 0 and the area code. International callers should replace the trunk prefix with the +54 country code, omitting the leading 0. Always verify the current dialing procedures with your telecom provider, as ENACOM periodically updates numbering resources.