Area Code 472 – Silao, GTO
The phone area code for Silao, GTO is 472 (international format +52472). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 472
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Silao, GTO
Geographic Coverage and Administrative Context
The area code 472 is a geographic National Destination Code (NDC) assigned to the city of Silao and its surrounding municipalities within the state of Guanajuato (GTO), Mexico. This region is part of the Bajío, an industrial and agricultural heartland. The code serves the urban area of Silao, as well as nearby localities such as Hacienda Nueva, San Isidro de los Sauces, and communities along the León–Irapuato corridor. Administratively, the code falls under the jurisdiction of the Federal Telecommunications Institute (IFT) and is allocated to fixed-line PSTN and VoIP services.
Dialing Formats and Number Structure
Within Mexico, calls to numbers in the 472 area code require the national long-distance prefix 01 followed by the area code and the seven-digit local number. For example, a local call from another state would be dialed as 01 472 XXX XXXX. However, within the same area code, local calls can be made using just the seven-digit number, without the prefix or area code. For international callers, the ITU-T E.164 format must be used: +52 472 XXX XXXX. Note that the leading '0' of the national prefix is omitted when dialing from abroad.
Overlay and Numbering Considerations
As of the latest IFT updates, the 472 area code does not have an overlay. However, due to the region's economic growth, the IFT periodically reviews numbering resources. Subscribers in Silao may have numbers that are portable across different fixed-line operators, but the geographic indicator remains tied to the physical location of the line. When dialing from a mobile phone within Mexico, it is common to use the same national format (01 472...), though some carriers may allow direct dialing with +52 for international-style calling.
Caller Instructions
- Local callers (within 472): Dial the 7-digit local number only.
- National callers (outside 472): Dial 01 472 followed by the 7-digit number.
- International callers: Dial +52 472 followed by the 7-digit number.
For example, a Silao business line might be +52 472 123 4567. When calling from the United States, you would dial 011 52 472 123 4567.
Economic and Strategic Importance
Silao is a key logistics and manufacturing hub, home to major automotive and aerospace plants, including the Silao Airport Industrial Park. This has driven demand for reliable fixed-line services in the area. The 472 code supports both residential and enterprise communications, and its geographic nature ensures that emergency services and regulatory compliance are locally routed.