Area Code 756 – Chilapa/Olinala, GRO

Geographic Coverage and Administrative Jurisdiction

The +52 756 area code is a geographic National Destination Code (NDC) assigned to the northern and central regions of the state of Guerrero (GRO), Mexico. It serves the municipalities of Chilapa de Álvarez and Olinalá, along with surrounding localities such as Ahuacuotzingo, Atlixtac, Cualác, and Zitlala. These areas are part of the Sierra Madre del Sur and the Montaña de Guerrero region, characterized by rugged terrain and dispersed rural communities. The administrative center is Chilapa, a city known for its indigenous Na savi (Mixtec) and Nahua heritage, while Olinalá is famous for its lacquered crafts. The code is managed under the jurisdiction of the Mexican Federal Telecommunications Institute (IFT) and is allocated for fixed-line PSTN services.

Dialing Formats and Caller Instructions

For local calls within the 756 area code, users can dial the seven-digit local number directly. However, for calls originating from other area codes within Mexico, the full national format is required: 01 756 XXX XXXX. International callers must use the country code and omit the trunk prefix: +52 756 XXX XXXX. For example, to call a fixed line in Chilapa from the United States, one would dial +52 756 123 4567. It is important to note that the 756 code is a geographic code, and as of the latest IFT numbering plan updates, no overlay code has been assigned to this region, meaning the seven-digit local number remains unique within the area.

Technical Considerations and Numbering Plan

All numbers under +52 756 are ten digits in length when including the national trunk prefix (01), or nine digits when dialed internationally (excluding the +52). The code is exclusively for fixed-line services, and no mobile numbers are assigned under this prefix. Mobile numbers in Mexico use the non-geographic codes 55, 56, 57, 58, 59, and 60-69, among others. For VoIP or alternative calling services, users must ensure that the number is dialed in the correct international format to avoid routing errors. When calling from a mobile phone in Mexico, it is common to dial the international format (+52 756 XXX XXXX) even for domestic calls, as mobile networks handle both formats seamlessly.

Practical Calling Guide

• Local calls (within 756): Dial the 7-digit subscriber number.
• Domestic long-distance (from other Mexican area codes): Dial 01 756 XXX XXXX.
• International calls (from abroad): Dial your country's exit code, then 52 756 XXX XXXX.
• Example: A caller in Mexico City would dial 01 756 123 4567; a caller in London would dial 00 52 756 123 4567.

Always verify the subscriber number length, as some rural lines may have fewer digits due to legacy numbering, but modern assignments are standardized to seven digits.