Area Code 499 – Jalisco/Zacatecas
The phone area code for Jalisco/Zacatecas is 499 (international format +52499). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 499
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Jalisco/Zacatecas
Geographic Coverage and Administrative Jurisdiction
The Mexican area code 499 is a geographic National Destination Code (NDC) assigned to the northeastern portion of the state of Jalisco and the southwestern region of Zacatecas. This code serves municipalities that straddle the border between these two states, with the primary urban centers being Lagos de Moreno (Jalisco) and Nochistlán de Mejía (Zacatecas). The numbering area also covers smaller communities such as San Juan de los Lagos, a major religious pilgrimage site, and Encarnación de Díaz in Jalisco, as well as Apulco and Teocaltiche in the surrounding region. Administratively, the code falls under the jurisdiction of the Federal Telecommunications Institute (IFT) in Mexico, which oversees the allocation and management of all geographic numbering resources.
Dialing Formats and Caller Instructions
For callers within Mexico, dialing a number in the 499 area requires the national long-distance prefix 01 followed by the area code and the seven-digit local number. For example, to reach a landline in Lagos de Moreno, you would dial 01 499 XXX XX XX. For international callers, the format is +52 499 XXX XX XX (or +52 1 499 XXX XX XX when calling a mobile number in this region, as Mexican mobile numbers are dialed with an additional '1' after the country code when called from abroad). Local calls within the same area code do not require the 01 prefix or the area code; simply dial the seven-digit number. It is important to note that this area code is geographic, meaning the number is tied to a physical location, and tariffs are typically lower for calls within the same local area.
Overlays and Numbering Considerations
Currently, the 499 area code does not have an overlay, meaning it is the sole code for its geographic region. However, due to growing demand for telecommunication services in this semi-rural area, the IFT may introduce an overlay in the future. If an overlay is implemented, ten-digit dialing would become mandatory for all local calls. For now, callers should be aware that while the region is primarily served by fixed-line operators (such as Telmex and Totalplay), some mobile operators may assign numbers with this prefix, but mobile numbers are non-geographic and are identified by their own distinct prefixes (e.g., 33 for Guadalajara, 44 for Zacatecas). Always verify the number type before dialing to ensure correct routing and billing.