Area Code 923 – Tabasco/Veracruz

Overview of Area Code 923

Area code 923 is a geographic numbering plan area (NPA) within the Mexican national numbering plan, administered under the ITU-T E.164 country calling code +52. It serves a region spanning parts of the states of Tabasco and Veracruz, primarily covering the municipality of Huimanguillo in Tabasco and nearby communities in the southeastern Veracruz lowlands. This area is part of the Grijalva River basin, an important agricultural and energy-producing region.

Geographic Coverage and Cities

The 923 code covers a mix of urban and rural localities. Key population centers include:

• Huimanguillo, Tabasco – the largest city in the area, known for its cattle ranching and proximity to the La Venta archaeological site.
• Chontalpa region – a subregion of Tabasco that includes several smaller towns and ejidos.
• Communities along the Tabasco-Veracruz border, such as Agua Dulce and Las Choapas (though these cities may have their own codes, the 923 area extends into rural zones near them).

Administratively, the code is assigned to fixed-line services, including residential, business, and government lines. It is not a mobile prefix; mobile numbers in Mexico are identified by the 3-digit prefix after +52 and are not tied to geography.

Dialing Formats

Understanding the correct dialing procedure is essential for both domestic and international callers.

• Local calls (within the 923 area): Dial the 7-digit local number directly. For example, to call a landline in Huimanguillo, dial 38 2 12 34 (a sample number).
• Domestic long-distance calls (from other Mexican area codes): Dial the long-distance prefix 01, followed by the area code 923 and the 7-digit number. Example: 01 923 38 2 12 34.
• International calls (from outside Mexico): Dial your country's exit code (e.g., 011 from the US/Canada), then Mexico's country code 52, then the area code 923 (without the leading 0), and the 7-digit number. Example: 011 52 923 38 2 12 34.

Overlays and Numbering Changes

As of the latest ITU-T and Mexican Federal Telecommunications Institute (IFT) updates, the 923 area code does not have an overlay. However, due to growing demand, IFT has introduced new geographic codes in nearby regions. Callers should always verify the current dialing plan, especially when calling from mobile phones, as some carriers may require the full 10-digit number (area code + local number) even for local calls.

Practical Tips for Callers

• When dialing from a Mexican mobile phone to a 923 landline, you must include the long-distance prefix 01 if you are outside the local area. Some mobile users may also need to add the area code even for local calls, depending on their carrier settings.
• For international callers, always drop the leading 0 from the area code when dialing from abroad.
• If you experience routing issues, confirm the number length (7 digits) and that you are using the correct country code (+52).

Area code 923 is an integral part of Mexico's telecommunications infrastructure, connecting a vital economic corridor. By following the correct dialing procedures, you can ensure seamless communication with this region.