Area Code 133 is not a valid or assigned area code in the North American Numbering Plan (NANP) or any other country’s numbering plan.
The NANP is the system used for assigning area codes in the United States, Canada, and other participating countries. The International Telecommunication Union (ITU) also assigns country codes and oversees the global numbering plan.
Neither the NANP nor the ITU has assigned Area Code 133 to any country, region, or geographic location. It’s possible that this area code may be reserved for future use or may not be used at all.
