Area Code 672 – Sinaloa
The phone area code for Sinaloa is 672 (international format +52672). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 672
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Sinaloa
Overview
Area code 672 is a geographic numbering plan area (NPA) in Mexico, assigned to the state of Sinaloa. It serves the central and northern municipalities of the state, including the cities of Culiacán, Guamúchil, and Los Mochis. This code is part of the national numbering plan administered by the Instituto Federal de Telecomunicaciones (IFT) under ITU-T E.164 guidelines.
Coverage and Administration
The 672 area code covers a significant portion of Sinaloa, a state on the Pacific coast known for its agricultural production and coastal tourism. Key cities within this code include:
- Culiacán Rosales – the state capital and largest city, serving as the economic and cultural hub.
- Los Mochis – a major port and agricultural center in the north.
- Guamúchil – a mid-sized city in the municipality of Salvador Alvarado.
The jurisdiction is shared among several municipalities, and the code is administered by the IFT, which assigns central office codes to local carriers.
Dialing Formats
For local calls within the same area code, dial the 8-digit local number (e.g., 1234 5678). For calls from other area codes within Mexico, dial the national long-distance prefix 01, then the area code and the local number: 01 672 123 4567. For international calls from abroad, dial the Mexican country code +52, then the area code (without the leading 0) and the local number: +52 672 123 4567.
Caller Instructions
- Local callers within 672 can dial the 8-digit number directly.
- National callers from other Mexican area codes must dial 01 672 before the local number.
- International callers must dial +52 672 followed by the local number, omitting any leading zero.
Overlay and Numbering Considerations
Currently, there is no overlay code for 672; it remains the sole area code for this region. However, the IFT has implemented number pooling and portability, allowing subscribers to retain their numbers when switching carriers. As demand grows, the IFT may introduce an overlay, but as of now, 672 continues to serve the region without changes.
Practical Example
If you are calling a business in Culiacán from the United States, you would dial 011 52 672 123 4567. From a mobile phone in Mexico outside the area, you would dial 01 672 123 4567. Always verify the local number length (8 digits) and include the correct prefixes to ensure successful connection.