Area Code 137 is a fictional area code that does not exist in the North American Numbering Plan. Area codes are typically assigned to specific geographic regions to facilitate telephone communication. The existing area codes range from 201 to 989, with each code serving a particular area or state. In the real world, area codes are crucial for identifying the location of a phone number. For example, Area Code 212 is associated with New York City, while Area Code 310 serves parts of California. Area Code 137, however, is not recognized in any official telecommunications system.