No, the 333 area code is not in Mexico.
In Mexico, area codes are typically three digits long, but 333 is not currently assigned to any region. Each area code in Mexico corresponds to a specific geographic area, with some larger cities or regions having their own distinct area codes.
For example, the area code for Guadalajara, Jalisco, is 33, while area codes like 55 are assigned to Mexico City. If you’re seeing a phone number with the 333 area code, it may be a different context or an error.