Area Code 538 – Ovalle, Coquimbo

Geographic Coverage and Administrative Jurisdiction

Country code +56 corresponds to Chile, and the area code 538 is a geographic National Destination Code (NDC) assigned to the city of Ovalle, located in the Limarí Province within the Coquimbo Region. This code covers the urban area of Ovalle and its immediate surroundings, including nearby localities that rely on the same local telephony exchange. Ovalle is the capital of the Limarí Province and serves as a commercial and agricultural hub for the region. The administrative jurisdiction falls under the Chilean telecommunications regulator, Subtel (Subsecretaría de Telecomunicaciones), which oversees the assignment and management of geographic numbering resources.

Dialing Formats and Number Structure

For local calls within the same NDC (i.e., from another number in the 538 area), subscribers dial the seven-digit subscriber number directly, without the trunk prefix or area code. For national long-distance calls from other geographic areas in Chile, callers must dial the trunk prefix 0, followed by the area code 538, and then the seven-digit subscriber number. The international format for callers from abroad is +56 538 XXX XXXX (or +56 538 XXXXXXX when written without spaces). For example, a local number might be +56 538 234 5678. It is important to note that the number of digits after the area code is seven, but the total length of a Chilean geographic number is eight digits (including the leading '5' of the area code). The area code 538 is part of the national numbering plan and is not subject to overlay codes in this region.

Caller Instructions

• Local callers (within Ovalle): Dial only the seven-digit subscriber number.
• National callers (outside Ovalle): Dial 0 538 followed by the seven-digit subscriber number.
• International callers: Dial the international access code (e.g., 00 or +) followed by 56 538 and the seven-digit subscriber number.

When calling from a mobile phone in Chile, it is common to include the trunk prefix and area code even when dialing a local number, as mobile networks require full national dialing. Always verify the subscriber number length, as Chilean geographic numbers are fixed at eight digits (excluding the trunk prefix).

Technical Considerations

Geographic area codes in Chile are assigned to specific PSTN exchanges and are used for fixed-line services. While number portability is available, the geographic code remains associated with the original location, and calls to a ported number may still be routed based on the original code. VoIP services may also use geographic numbers, but the physical location of the caller is irrelevant; the number is tied to the Ovalle exchange. For emergency services, dial 131 (SAMU) or 133 (Carabineros) regardless of the area code.