Area Code 133 is a designated telephone area code in the North American Numbering Plan. It is primarily used for specific regions or services, often associated with special or non-standard phone lines. Area codes help to organize telephone numbers and ensure efficient call routing. This area code may not be as widely recognized as others, such as Area Code 212 for New York City. It is important for users to be aware of area codes when dialing, as they can indicate the geographic location or type of service associated with a phone number.