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In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes. The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state ...
The first customer-dialed direct call using an area code was made on November 10, 1951, from Englewood, New Jersey, to Alameda, California. [6] Direct distance dialing (DDD) was introduced subsequently across the country. By the early 1960s, DDD had become commonplace in cities and most towns in the United States and Canada.
Before the late 1980s and the arrival of cellular and PCS mobile phone service, GTE offered Improved Mobile Telephone Service (IMTS) on VHF (152 MHz) and UHF (454 MHz) frequencies in Los Gatos. The service included full-duplex dial service. Tight restrictions were imposed on call durations because there were only a few channels available.
1 610 xxx xxxx — calls from numbers outside the 610/484 and 215/267 area codes; second of two completion options for mobile phones within the U.S. In California and New York, because of the existence of both overlay area codes (where an area code must be dialed for every call) and non-overlay area codes (where an area code is dialed only for ...
formerly used for mobile customer service on some carriers (now 611) formerly used for some local emergency numbers in Jamaica (now 911) 812: Indiana (Southern Indiana, including Bloomington, Evansville, Terre Haute, Columbus, Jeffersonville, Lawrenceburg, Madison, and New Albany) 1947: 2015: overlaid by 930; 813
This list contains the mobile country codes and mobile network codes for networks with country codes between 300 and 399, inclusively – a region that covers North America and the Caribbean. Guam and the Northern Mariana Islands are included in this region as parts of the United States.
Area codes 909 and 840 are telephone area codes in the North American Numbering Plan for the far-eastern part of Los Angeles County and southwestern San Bernardino County in the U.S. state of California. Area code 909 was created on November 14, 1992, in an area code split of 909, and 840 was added to the numbering plan area to form an overlay ...
Numbering plan areas in California (blue) and border states. Area codes 442 and 760 are shown in red. Area codes 760 and 442 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of California. These area codes serve an overlay complex that comprises much of the southeastern and southernmost portions