Area Code 757 – Huamuxtitlan/Tlapa de Comonfort, GRO

Overview of Area Code 757 (Mexico)

Area code 757 is a geographic numbering plan area (NPA) within the Mexican national numbering plan, assigned to the region encompassing Huamuxtitlán and Tlapa de Comonfort in the state of Guerrero (GRO). This area code serves municipalities in the mountainous La Montaña region, a predominantly indigenous area with significant cultural heritage. The code is administered under the ITU-T E.164 framework, with Mexico's country calling code +52. When dialing from abroad, callers must use the international prefix (e.g., 00 from most countries) followed by 52 and then the 10-digit national number, which includes the area code 757 and the local subscriber number. For example, a landline in Tlapa de Comonfort might be reached at +52 757 47X XXXX.

Geographic Coverage and Dialing Formats

The 757 area code covers the municipalities of Huamuxtitlán and Tlapa de Comonfort, along with surrounding localities. Tlapa de Comonfort is the largest city in the region and serves as a commercial and administrative hub. Huamuxtitlán is a smaller town known for its colonial architecture and nearby archaeological sites. Local calls within the same area code are dialed using the 7-digit subscriber number (or sometimes 8-digit depending on the specific numbering plan) without the area code. However, for calls from other area codes within Mexico, the full 10-digit number (area code + subscriber number) is required. For international callers, the format is +52 757 XXX XXXX.

Overlay and Numbering Considerations

As of the latest ITU-T and Mexican Federal Telecommunications Institute (IFT) updates, there is no overlay code for 757, meaning the area code is unique to this geographic region. The Mexican numbering plan is closed, so all national calls, even local ones, require the area code when dialing from a different area code. Mobile numbers in Mexico are not tied to geographic area codes; they use their own prefixes (e.g., 55, 44, etc.) and are not affected by 757. However, fixed-line subscribers in this region may have numbers starting with 757 followed by a central office code (e.g., 757 47X for Tlapa).

Caller Instructions

• Local callers (within 757): Dial the 7-digit local number (e.g., 47X XXXX).
• National callers (from other Mexican area codes): Dial 01 757 XXX XXXX (using the national long-distance prefix 01).
• International callers: Dial your country's exit code (e.g., 011 from the US/Canada), then 52, then 757, then the local number (e.g., 011 52 757 47X XXXX).

This area code is part of the PSTN and is also used by VoIP providers that offer geographic numbers in Mexico. When calling from abroad, ensure you have the correct international dialing prefix for your country. The cost of calling this region varies by carrier and plan; international rates typically apply.