Area Code 457 – Jalisco/Zacatecas
The phone area code for Jalisco/Zacatecas is 457 (international format +52457). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 457
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Jalisco/Zacatecas
Overview of Area Code 457
Area code 457 is a geographic numbering plan area (NPA) within the North American Numbering Plan (NANP) administered by the Mexican Secretariat of Communications and Transportation (SCT) and the Federal Telecommunications Institute (IFT). It serves a region spanning parts of the states of Jalisco and Zacatecas in central Mexico. This code was introduced as an overlay to the existing 467 area code to meet growing demand for telecommunication services, particularly in semi-urban and rural communities.
Geographic Coverage and Jurisdiction
The 457 area code covers municipalities that straddle the border between Jalisco and Zacatecas, including areas such as Lagos de Moreno (Jalisco) and nearby towns like Encarnación de Díaz, as well as portions of southern Zacatecas such as Nochistlán and Apulco. The region is characterized by a mix of agricultural zones and emerging industrial corridors, with a population that relies on both fixed and mobile telephony. The administrative jurisdiction is shared between the state governments, but numbering resources are allocated federally.
Dialing Formats and Caller Instructions
For local callers within the 457 area code, the standard 10-digit dialing format is used: 457 XXX XXXX. When calling from another area code in Mexico, you must dial the long-distance prefix 01 followed by the area code and number: 01 457 XXX XXXX. For international callers, the country code for Mexico is +52, so the full international format is +52 457 XXX XXXX (drop the leading 0 of the long-distance prefix).
Overlay Considerations and Numbering Changes
Because 457 is an overlay to 467, all calls within the combined service area require 10-digit dialing, even for calls between numbers that share the same area code. This means that local calls must include the area code, and there is no need for a '1' prefix as in some other NANP countries. The overlay ensures that new subscribers can receive numbers without exhausting the existing supply, but it also requires that all customers update their stored contacts and any speed-dial lists to include the full 10-digit number.
Practical Examples
To illustrate, a fixed-line subscriber in Lagos de Moreno might have the number 457 123 4567. A caller from Mexico City would dial 01 457 123 4567. A caller from the United States would dial 011 52 457 123 4567, or simply +52 457 123 4567 from a mobile phone. It is important to note that while area code 457 is geographic, mobile numbers in Mexico are non-geographic and use the 2XX prefix system, so a mobile number will never begin with 457.