​USA Area Codes

 
If you're planning to make an international call from outside the USA, you'll need to know the country code of the destination and the area code of the recipient's phone number. You'll need to know the country code and the area code for the destination before you can make the call. These Country codes for the United States are 001 and 011, respectively. The area codes of various states are different from each other. To know more about the USA area codes, read on.

The United States of America is divided into regions and area codes, which correspond to different geographic telephone dialing areas. Some states have a single area code, while others have many. The number of telephone numbers has increased in the USA, causing area codes to be assigned to each state. As a result, the country has many more area codes now than it did just a few decades ago. With this increase in telephone numbers, more people are able to get connected to the right services.

The NPA follows state lines, with a few exceptions. Some area codes cross international boundaries while others don't, meaning you might find multiple areas served by the same phone number. The numbering plan, which covers the US and Canada, was developed in 1947 and the first area code in New Jersey was 201. It was designed to simplify direct dialing of long distance phone calls. During the 1940s, the area code system was implemented in major cities and fully implemented by the mid-60s. Eventually, Bell Laboratories and AT&T began creating three-digit area codes for phone numbers, which would later be used throughout the country. Visit the WhoCalled website for more insights on the above topic.

The North American Numbering Plan (NANP) was designed by AT&T and the Bell System to standardized phone numbers in the US and Canada. The plan created area codes that would represent non-geographic areas. The country was divided into seven toll-free areas, which are not specific to a region. The North American Numbering Plan also created a numbering system for telephone companies. Besides the phone codes, there are 7 toll-free area codes. The area codes are assigned by the NANPA and do not represent geographic areas.

Area codes are often called city codes. In addition to cities, area codes are used to designate airports, streets, and other geographic locations. For example, the city code of Boston is BOS, while that of Washington, DC is DC. The same is true for New Jersey. If you have no idea about the city codes, it is best to keep the old phone number and call your phone company. Once your phone number is ported to your new area, you will need to change the phone provider as well.

Inbound phone calls must be preceded by an area code, which is three digits long. Then, there is a seven-digit local subscriber number. US phone numbers are usually three-digits long, including the area code. However, in the City of Boston, there are two area codes, while six are used for nearby towns and cities. And, in many other cities and areas, multiple area codes are used for local phone numbers.

This post https://en.wikipedia.org/wiki/List_of_ISO_3166_country_codes will help you understand the topic even better.

---