Area Code 458 – Zacatecas
The phone area code for Zacatecas is 458 (international format +52458). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 458
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Zacatecas
Geographic Coverage and Administrative Jurisdiction
The Mexican area code 458 is a geographic National Destination Code (NDC) assigned to the southern region of the state of Zacatecas, within the country's North-Central telecommunications numbering plan. This code covers municipalities including Jerez de García Salinas, Villanueva, Tepetongo, and Valparaíso, as well as surrounding rural localities. The region is served by a mix of incumbent carrier infrastructure and competitive local exchange carriers, all operating under the regulatory oversight of the Instituto Federal de Telecomunicaciones (IFT).
Dialing Formats and Caller Instructions
For domestic callers within Mexico, calls to any subscriber in the 458 area code must be dialed using the 10-digit national format: 458 XXX XX XX. No trunk prefix '0' is required for domestic long-distance calls since the 2019 numbering reform. International callers must dial Mexico's country calling code +52 followed by the area code and subscriber number: +52 458 XXX XX XX. When calling from a mobile phone, the same international format applies, and the plus sign (+) replaces the international access prefix (e.g., 011 in the US/Canada).
Geographic vs. Non-Geographic Allocation
As a geographic code, 458 is tied to the physical location of the fixed-line subscriber. However, with the proliferation of VoIP and number portability, some services may not be physically located in the region, but the number retains its geographic significance for routing and emergency services. The IFT mandates that all geographic numbers must be portable, allowing users to retain their numbers when changing service providers, but not when relocating outside the area code's coverage area.
Overlay and Numbering Resources
Currently, there is no overlay code for the 458 region; the code serves as the sole NDC for its coverage area. The IFT has allocated sufficient numbering resources to meet local demand, with a theoretical capacity of up to 10,000,000 subscriber numbers, though actual utilization is far lower. As of recent data, the code supports approximately 150,000 active lines, reflecting the region's semi-rural character.
Practical Examples for Callers
- Local call (within the 458 area): dial 458 123 45 67.
- Domestic long-distance call (from Mexico City): dial 458 123 45 67 (no additional prefixes).
- International call (from the United States): dial 011 52 458 123 45 67 or +52 458 123 45 67 from a mobile phone.
Understanding the correct dialing format ensures efficient call completion and avoids misrouting. For businesses, having a local presence in the 458 area can enhance customer trust and accessibility, particularly for enterprises targeting the Zacatecas market.