Area Code 3827 – Aimogasta, La Rioja

Overview of Area Code 3827

Area code 3827 is a geographic National Destination Code (NDC) assigned to the city of Aimogasta and its surrounding areas within the La Rioja Province of Argentina. This code is part of the national numbering plan administered by the Ente Nacional de Comunicaciones (ENACOM), following ITU-T E.164 recommendations. The region is known for its olive production and historical significance, being the birthplace of former Argentine President Facundo Quiroga.

Geographic Coverage and Jurisdiction

The 3827 code covers Aimogasta, the departmental head of Arauco Department, and nearby localities such as Bañado de los Pantanos, Machigasta, and Villa Mazán. These areas are situated in the northern part of La Rioja Province, approximately 1,100 kilometers northwest of Buenos Aires. The administrative jurisdiction falls under the provincial government of La Rioja, with local telephony services provided by cooperatives and licensed operators.

Dialing Formats

For local calls within the 3827 area, subscribers dial the seven-digit subscriber number directly. For national long-distance calls from other Argentine provinces, the format is: 0-3827-XXXXXXX, where the leading '0' is the national trunk prefix and '3827' is the area code. For international calls from abroad, callers must dial the Argentine country code +54, followed by the area code without the trunk prefix, and then the subscriber number: +54 3827 XXXXXXX.

Numbering and Overlay Considerations

Currently, there is no overlay code in the 3827 area, meaning the area code is unique for this region. The subscriber numbers are seven digits long, and the total length of a national significant number (NSN) is ten digits (area code plus subscriber number). No additional digit is required for local calls, but the area code must be included for all calls originating outside the 3827 geographic area.

Caller Instructions

For local callers within the same area code, simply dial the seven-digit number. For callers from other regions in Argentina, use the national long-distance format with the trunk prefix '0'. For international callers, always use the plus sign (+) or the international access prefix of the originating country, followed by 54, then the area code (without the leading zero), and the subscriber number. Ensure that the area code is included even when calling from a mobile phone, as Argentine mobile numbers are not prefixed with '15' for landline calls.

Telecom Infrastructure

Telecommunications services in the 3827 region are provided by fixed-line operators such as Telecom Argentina and Telefónica, as well as local cooperatives. The region has access to PSTN, ISDN, and increasingly VoIP services. Mobile coverage is available through national MNOs, but the area code 3827 is exclusively for fixed-line services; mobile numbers in Argentina use the 15 prefix after the area code for calls from landlines to mobiles, but this does not apply to the numbering plan of the fixed line itself.