Area Code Lookup

Understanding US area codes

Area codes are three-digit prefixes assigned to geographic regions in the United States and Canada under the North American Numbering Plan (NANP). Originally established in 1947, the system started with 86 area codes and has grown to over 300 as demand for phone numbers increased.

When choosing a phone number, the area code tells callers where you're "from" — even if you're calling from across the world. With a cloud phone service like Jaambo, you can pick any area code regardless of where you actually live, giving you a local presence in any US city.

Popular area codes like 212 (Manhattan), 310 (Los Angeles), and 415 (San Francisco) are highly sought after. With Jaambo, you can search available numbers by area code and get connected instantly.