What is what area code is 832?

Area code 832 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Texas. It overlays the 713 and 281 area codes, serving the Houston metropolitan area. It was introduced on August 7, 1999, to alleviate the exhaustion of available phone numbers in the region. This makes it part of an overlay complex in and around Houston. You can research the concept of Area%20Code%20Overlays to understand this better.