411 Chicago Reverse Phone Lookup

411 Chicago Reverse Phone Lookup

Chicago Reverse Phone Lookup

Identifying Chicago Phone Numbers

If you're trying to identify a number that you suspect originates from Chicago or the surrounding area, then a reverse phone lookup is a simple way to find out who called you. All you need to do is enter the phone number, and you'll be provided with options to determine who the caller is.

Area Code 312

Area code 312 is original area code for Chicago, Illinois. It was introduced in 1947 as one of the very first area codes in the United States. It was followed up by 708 later on for suburban areas surrounding Chicago, with 872 being added even later down the road in 2009 as an overlay for both.

Who is NANPA?

The North American Numbering Plan Administrator is a non-profit organization that coordinates the assignment of telephone numbers for telephones not just in Chicago or Illinois for that matter, but the rest of North America in its entirety.

NANPA was established in 1947 to help coordinate the assignment of telephone numbers for telephones in Canada, the United States, and its territories. The organization is responsible for assigning area codes and other local numbering resources across all three nations.

About Chicago

Chicago is the third largest city by population in the United States. It is located in Illinois, on the southern shore of Lake Michigan. The city has a population of over 2.7 million people and it is famous for its musical theater, comedy clubs, museums, and architecture.

Chicago is a major American cultural hub, a world-class financial center, and the home of highly ranked educational institutions. A number of large multinational corporations also have their headquarters in Chicago.