If you’ve ever wondered how phone calls get routed to the right place, it all starts with the North American Numbering Plan (NANP). This system uses area codes to direct calls across different regions.
One such area code is 872, and it belongs to the city of Chicago, Illinois. If you’re seeing a number with the 872 country code, it’s likely someone from the Windy City trying to get in touch.
This article will give you a complete look at the 872 area code, including a bit of its history and how it’s used today.