Area Code 478 – Calera Victor Rosales, ZAC
The phone area code for Calera Victor Rosales, ZAC is 478 (international format +52478). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 478
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Calera Victor Rosales, ZAC
Geographic Coverage and Administrative Jurisdiction
The area code 478 is a geographic National Destination Code (NDC) assigned to the state of Zacatecas, specifically serving the municipality of Calera and its principal locality, Calera Victor Rosales. This region, located in the central-northern part of Mexico, is an important agricultural and industrial hub. The code also covers surrounding communities within the municipality, including but not limited to Rancho Grande and Colonia Zaragoza. The administrative jurisdiction falls under the Secretariat of Infrastructure, Communications and Transportation (SICT) of Mexico, which oversees numbering resources in accordance with the Federal Telecommunications Institute (IFT).
Dialing Formats and Procedures
For callers within Mexico, the national long-distance format requires dialing the long-distance prefix 01, followed by the area code 478 and the seven-digit local number. For example, to call a landline in Calera Victor Rosales from Mexico City, you would dial: 01 478 123 4567. For international callers, the format is the country code +52, the area code 478, and the seven-digit local number, without the leading '01'. Thus, from the United States, you would dial: +52 478 123 4567. It is crucial to omit the '01' when dialing from abroad.
Local vs. International Caller Instructions
Local callers within the same area code can dial the seven-digit number directly without the area code. However, due to the implementation of overlay codes in some regions, it is always advisable to confirm with your local service provider. For foreign callers, it is essential to use the international exit code of your country (e.g., 011 from the US) before dialing Mexico's country code. Additionally, when storing numbers in your mobile phone, always use the international format (+52 478 ...) to ensure proper routing when roaming or using VoIP services.
Telecom Infrastructure and Numbering
The 478 area code is part of Mexico's open numbering plan, which means that the length of national significant numbers is ten digits (NDC + subscriber number). The subscriber numbers within this code are seven digits long. This area code is exclusively geographic, meaning it is tied to the PSTN and fixed-line services. However, with the advent of number portability, a number with this prefix may be routed to a mobile or VoIP service, but the geographic association remains for regulatory and emergency services purposes.