Area Code 81 – San Juan Bautista / Misiones

Geographic Coverage and Administrative Jurisdiction

Area code 81 is a geographic National Destination Code (NDC) assigned to the San Juan Bautista exchange area within the Misiones Department of Paraguay. This code serves the city of San Juan Bautista (the departmental capital) and its surrounding districts, including San Ignacio, Santa Rosa, Ayolas, and Villa Florida. The region is part of the country's southern zone, bordering Argentina to the south. As a geographic code, it routes calls to fixed-line PSTN subscribers within this specific administrative territory.

Dialing Formats and Caller Instructions

For domestic callers within Paraguay, the number must be dialed in the national format: 0 81 XXX XXXX (where the leading 0 is the trunk prefix). For example, a local call from Asunción to a fixed line in San Juan Bautista would be dialed as 0 81 234 5678. International callers must replace the trunk prefix with Paraguay's country calling code (+595), omitting the leading 0. Thus, the same number would be dialed as +595 81 234 5678 from abroad. It is important to note that the area code is an integral part of the national numbering plan; omitting it will result in a failed call.

Numbering Structure and Technical Considerations

Fixed-line numbers under area code 81 typically consist of 7 digits after the NDC, making the total national significant number (NSN) 9 digits (excluding the trunk prefix). The exchange is operated by the state-owned incumbent COPACO (Compañía Paraguaya de Comunicaciones), which holds the concession for fixed-line services in this region. As with all geographic codes in Paraguay, number portability is not yet fully implemented for fixed lines, meaning that the area code generally reflects the physical location of the line. Overlay codes have not been introduced for this area; therefore, the 81 code is unique to the Misiones region.

Usage and Practical Information

Businesses and residents in the Misiones Department rely on this code for landline communications, including internet via DSL and traditional PSTN services. When calling from a mobile phone within Paraguay, users must still include the area code, as mobile numbers use separate non-geographic prefixes (e.g., 96x, 97x, 98x, 99x). For international callers, it is essential to verify the correct time zone (Paraguay Time, UTC-4, with daylight saving adjustments) to avoid disturbing recipients during late hours. Additionally, some VoIP services may route calls to this code, but the quality and cost can vary depending on the provider's interconnection agreements.