Area Code 419 – Guanajuato
The phone area code for Guanajuato is 419 (international format +52419). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 419
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Guanajuato
Geographic Coverage and Administrative Jurisdiction
The area code 419 is a geographic National Destination Code (NDC) assigned to the state of Guanajuato, in central Mexico. It covers a significant portion of the state, including the cities of Irapuato, Silao, Guanajuato City (the state capital), and San Miguel de Allende, among others. This code is part of the national numbering plan administered by the Instituto Federal de Telecomunicaciones (IFT) and follows the ITU-T E.164 standard for international dialing.
Dialing Formats
For local calls within the 419 area, callers must dial the 10-digit national number, which includes the area code and the 7-digit subscriber number. For example, to call a landline in Irapuato, you would dial 419 123 4567 (without any trunk prefix). For calls from other parts of Mexico, you must dial the long-distance prefix 01 followed by the area code and number: 01 419 123 4567. International callers should dial Mexico's country code +52, then the area code and number: +52 419 123 4567.
Overlays and Numbering Changes
As of the latest IFT updates, there are no overlay codes for the 419 area. However, due to the growing demand for telecommunication services in the region, the IFT has implemented measures to ensure sufficient numbering resources. In some areas of Mexico, overlay codes have been introduced, but for 419, the 10-digit dialing is already mandatory for all calls, including local ones. This simplifies the dialing process and ensures that subscribers can keep their existing numbers even if new codes are added in the future.
Caller Instructions
For local callers within the 419 area, simply dial the 10-digit number. For callers from other parts of Mexico, use the 01 prefix. For international callers, always use +52 followed by the full number. Remember that when calling from a mobile phone in Mexico, you may need to include the area code even for local calls, as mobile networks route calls based on the full 10-digit number. Always check with your service provider for specific dialing instructions.
Economic and Cultural Significance
The 419 area is economically vital, with Irapuato being a major agricultural and industrial hub, Silao hosting the General Motors plant and the Puerto Interior logistics park, and San Miguel de Allende being a UNESCO World Heritage site and a popular tourist destination. This mix of business and tourism makes reliable telecommunications essential for both residents and visitors.