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Area codes 214, 469, 972, and 945 are telephone area codes in the North American Numbering Plan (NANP) for Dallas, Texas and most of the eastern portion of the Dallas–Fort Worth metroplex. The area codes are assigned in an overlay complex to a single numbering plan area that was the core of one of the original area codes of 1947, area code 214.
Numbering plan areas and area codes of Texas (tan). This is a list of area codes in the U.S. state of Texas.. The date of establishment of each area code is indicated in parentheses: [1]
The 925 prefix originally covered only Riverside, California. The surrounding offices were originally under the 923 prefix. The present-day 926 prefix range only covers the southern and coastal portion of Orange County. This includes, Irvine, which originally had only ZIP Code, 92650.
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
Area codes 817 and 682 are telephone area codes in the North American Numbering Plan (NANP) in the U.S. state of Texas. The service area comprises the city of Fort Worth and most of the western portion of the Metroplex . Area code 817 was created in 1953 mostly from area code 915, one of the original area codes of 1947.
this was the first part of North America to have its code changed three times: from 213 to 714 1951: to 619 in 1982, and to 760 in 1997. was to have originally split off the portion of 760 serving San Diego County to a new 442 area code in late 2008/early 2009; that plan was cancelled. 2009: overlaid by 442. 761.
The original North American area codes were established by the American Telephone and Telegraph Company (AT&T) in 1947, after the demonstration of regional Operator Toll Dialing during the World War II period. The program had the goal of speeding the connecting times for long-distance calling by eliminating intermediary telephone operators.
The "K" and "W" prefixes are used on both sides of the Mississippi River (for example, KHB36 in Washington, D.C., and WXK25 in El Paso, Texas). Highway advisory radio stations operating on the AM band have call signs consisting of "K" and "W" followed by two or three letters and three digits. As with weather radio, "K" and "W" calls are ...