The History of the North American Numbering Plan

You may not require an area code to make local calls in your area, but any time you call long distance, this is a necessary part of the phone number you are dialing. The area code is the first three official digits of standard 10-digit phone numbers in North America. Without this code, most calls would not be connected to their intended destination, as all area codes are assigned to specific geographical regions.

Have area codes always existed with phone numbers? Yes and no. While there have always been designated codes, the type of area code we recognize and use today is known as the North American Numbering Plan (NANP), which did not come into existence until 1947. It was during the 1940's that the area code system was developed by AT&T and Bell Laboratories, because phones had increased in popularity and had become a more common feature in households. Thus, in order to maintain an abundance of numbers, three digits were added to the beginning of the traditional 7-digit number.

When first created, the North American Numbering Plan serviced both the United States and Canada, as it still does today along with the other U.S. territories and a number of Caribbean nations. However, unlike today, there were far fewer area codes as initially no more than 86 codes existed.

Originally, area codes were distributed to accommodate the population. Some states and provinces only required one to service their residents, while others had two or more to meet the needs of their larger populations. The original 3-digt codes featured only a "1" or a "0" as the middle number. Those with the number 1 indicated a state or province that had additional codes, while the 0 was designated to those that only needed one. The first and last digit of the NANP code indicated the number of citizens in an area. Regions that were more populated had lower numbers because it made dialing easier for phone consumers who only had rotary phones at the time.

When you consider how far the history of area codes has come, it truly is amazing how this system works, and to know that without it, we would not be able to make long distance and even local calls. Furthermore, we wouldn't have the convenience of being able to search a phone number we didn't know, as an area code helps to provide us with some of the location information on the owner.

Комментариев: [0] / Оставить комментарий
17 Sep 2014 00:21:27

Lingering smoke to vacate Salem area by evening

Lingering smoke to vacate Salem area by evening Statesman Journal "Overnight we had a wind shift, which will help keep smoke over the mountains and away from the central valley area ," said Laurel McCoy, a meteorologist for the National Weather Service Portland office. "Any smoke that's still lingering should be out ...
16 Sep 2014 21:40:45

Kansas City-area real GDP growth trails nation, region

Kansas City- area real GDP growth trails nation, region Kansas City Business Journal The 1.4 percent growth rate in real GDP is lower than the 1.7 percent rate for the Kansas City area in the previous year. The accompanying chart shows the history of real GDP growth since 2001. After a large drop (2.5 percent) in 2009, there was a ...
16 Sep 2014 21:39:49

Power grid groans, blackouts roll through LA area as heat wave nears peak

Power grid groans, blackouts roll through LA area as heat wave nears peak Los Angeles Times Blackouts were reported in some of the area's hardest hit by the five-day heat wave, including Sun Valley, Burbank and Sherman Oaks, where temperatures have hit as high as 105 degrees. Other areas that were affected Tuesday included Brentwood, Pacific ...
16 Sep 2014 21:18:04

ABQ area's GDP growth rate was negative in 2013, BEA reports

Dallas Morning News ABQ area's GDP growth rate was negative in 2013, BEA reports Albuquerque Business First The Albuquerque metropolitan area's economy suffered a grim setback in 2013 as its GDP growth rate fell into negative territory after growing for four years, according to figures released Tuesday from the U.S. Bureau of Economic Analysis. Albuquerque ... Boston Area's Economic Growth Slowed Last Year Northwest Arkansas 26th fastest growing metro area , Fort Smith GDP up 1.8%
16 Sep 2014 20:29:24

Rain expected in Bay Area on Wednesday

SFGate Rain expected in Bay Area on Wednesday SFGate (09-15) 16:17 PDT San Francisco -- The Bay Area may get its first dose of wet weather in months this week. Forecasters say the Category 2 hurricane that struck Mexico's Baja California peninsula overnight Sunday, dubbed Hurricane Odile, could send ... Seattle- area honeymoon couple trapped in Mexico by hurricane Hurricane Odile batters Mexico's Baja resorts, knocks out power to most area Powerful Hurricane Odile lashes Mexico's Pacific resort area