Area Code 442 – Queretaro
The phone area code for Queretaro is 442 (international format +52442). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 442
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Queretaro
Overview of Area Code 442
Area code 442 is a geographic National Destination Code (NDC) assigned to the city of Querétaro and its surrounding metropolitan area, located in the state of Querétaro in central Mexico. This code is part of the North American Numbering Plan (NANP) under the country code +52, but it is administered by Mexico's Federal Telecommunications Institute (IFT). The 442 area code covers the capital city of Santiago de Querétaro, as well as neighboring municipalities such as El Marqués, Corregidora, and parts of Huimilpan, providing fixed-line and mobile services within this economically vibrant region.
Geographic Coverage and Administrative Jurisdiction
The 442 area code serves the municipality of Querétaro, which is the political and economic heart of the state. The region is known for its rapid industrial growth, with numerous multinational corporations establishing operations in the Querétaro Industrial Parks. Key localities within the 442 code include the historic city center, the modern business districts, and residential areas like Juriquilla and Zibatá. The code is also used in nearby towns such as Santa Rosa Jáuregui and Tlacote el Bajo, which are part of the greater Querétaro metropolitan area.
Dialing Formats and Caller Instructions
For local callers within Mexico, dialing a number in the 442 area code requires the format: 442 XXX XXXX. However, if you are calling from outside Mexico, you must include the country code and drop the trunk prefix '0' (which is no longer used in international dialing). The international format is: +52 442 XXX XXXX. For example, a local number might be 442 123 4567, and from the United States you would dial +52 442 123 4567.
When calling from a Mexican mobile phone to a fixed line in Querétaro, you can dial the 10-digit number directly (442 XXX XXXX) without any additional prefix. For callers from other countries, always use the plus sign (+) followed by the country code and the full national number. It is important to note that Mexico does not use area code overlays in the traditional sense; instead, the 442 code is exclusive to this geographic region, and no new area codes have been overlaid onto it as of the latest IFT updates.
Practical Considerations for Callers
For international callers, be aware that some Mexican numbers may be displayed with a '1' after the country code when dialing from abroad, especially when calling mobile numbers. However, for fixed-line numbers in the 442 area code, the format remains +52 442 XXX XXXX. Always verify the number length: local numbers in Mexico are 8 digits after the area code, so the complete national number is 10 digits (including the area code).
For businesses or individuals in Querétaro, the 442 code is essential for establishing a local presence. The area code is also used for VoIP services that offer virtual numbers, allowing companies to have a Querétaro phone number without a physical office in the region. This is particularly beneficial for customer service and sales operations targeting the local market.