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Area Code 369
Area codes 707 and 369 are telephone area codes in the North American Numbering Plan (NANP) for the northwestern part of the U.S. state of California. The area codes serve part of the northern San Francisco Bay Area, as well as the North Coast. Major cities in the area codes include Napa, Sebastopol, Vallejo, Benicia, Fairfield, Santa Rosa, Windsor, Healdsburg, Rohnert Park, Petaluma, Fort Bragg, Rio Vista, Crescent City, Eureka, Clearlake, Vacaville, Dixon, and Ukiah. 707 was created by a split of area code 415 on March 1, 1959. Area code 369 was added to the numbering plan area (NPA) on February 1, 2023, to form an overlay numbering plan in the service area. History When the American Telephone and Telegraph Company (AT&T) devised the first comprehensive telephone numbering plan for the North American continent in 1947, the far northern part of California received area code 916, with the exclusion of the city of Sacramento, which used area code 415. California area c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code
A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing. Telephone numbering plans are defined world-wide, as well as within each of the administrative regions of the public switched telephone network (PSTN), and in private telephone networks. In public numbering systems, geographic location typically plays a role in the sequence of numbers assigned to each telephone subscriber. Many numbering plan administrators subdivide their territory of service into geographic regions designated by a prefix, often called an area code or city code, which is a set of digits forming the most-significant part of the dialing sequence to reach a telephone subscriber. Within such regions designated by area codes, locally unique telephone number are assigned based on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crescent City, California
Crescent City ( Tolowa: ''Taa-’at-dvn''; Yurok: ''Kohpey''; Wiyot: ''Daluwagh'') is the only incorporated city in Del Norte County, California, of which it is also the county seat. The city is on the North Coast of California and had a total population of 6,673 in the 2020 census, down from 7,643 in the 2010 census. The city is the site of the Redwood National Park headquarters, as well as the historic Battery Point Light. Due to the richness of the local Pacific Ocean waters and the related catch, and ease of access, Crescent City Harbor serves as home port for numerous commercial fishing vessels. The population includes inmates at Pelican Bay State Prison, also within the city limits, and the former census-designated place Crescent City North annexed to the city. Crescent City's offshore geography makes it unusually susceptible to tsunamis. In 1964 much of the city was destroyed by four tsunami waves generated by the Great Alaskan earthquake off Anchorage, Alaska. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 213
Area codes 213, 323, and 738 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of California. They are assigned in an overlay complex to a numbering plan area (NPA) that comprises, roughly, the area of downtown Los Angeles City, as well as several southeast Los Angeles County cities, such as Bell and Huntington Park. Area code 213 was one of the original North American area codes of 1947 and 323 was created in an area code split of 213 in 1998. This was the fifth split of 213 and left it serving only downtown Los Angeles and immediately adjoining neighborhoods. In 2017, the two NPAs were recombined in the overlay. Area code 738 was selected as an additional overlay area code, activated in November 2024. History In 1947, when 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 pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flash-cut
A flash cut, also called a flash cutover, is an immediate change in a complex system, with no phase-in period. In the United States, some telephone area codes were split or overlaid immediately, rather than being phased in with a permissive dialing period. An example is telephone area code 213, which serves downtown Los Angeles and its immediate environs, split in January 1951 into 213 and 714 all at once. Another example is an immediate switch from an analog television channel to a digital television channel on the same frequency, where the two cannot operate in parallel without interference. A flash cut can also define a procedure in which multiple components of computer infrastructure are upgraded in multiple ways, all at once, with no phase-in period. In film, an extremely brief shot, sometimes as short as one frame, which is nearly subliminal in effect. Also a series of short staccato shots that create a rhythmic effect. See also * Big bang adoption * Flag day (sof ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Valley (California)
The Central Valley is a broad, elongated, flat valley that dominates the interior of California, United States. It is wide and runs approximately from north-northwest to south-southeast, inland from and parallel to the Pacific coast. It covers approximately , about 11% of California's land area. The valley is bounded by the California Coast Ranges, Coast Ranges to the west and the Sierra Nevada to the east. The Central Valley is a region known for its agricultural productivity. It provides a large share of the food produced in California, which provides more than half of the fruits, vegetables, and nuts grown in the United States. More than of the valley are irrigated via reservoirs and canals. The valley hosts many cities, including the state capital Sacramento, California, Sacramento, as well as Redding, California, Redding, Chico, California, Chico, Yuba City, California, Yuba City, Woodland, California, Woodland, Davis, California, Davis, Stockton, California, Stockton, M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra Nevada
The Sierra Nevada ( ) is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primarily in Nevada. The Sierra Nevada is part of the American Cordillera, an almost continuous chain of mountain ranges that forms the western "backbone" of the Americas. The Sierra runs north-south, and its width ranges from to across east–west. Notable features include the General Sherman Tree, the largest tree in the world by volume; Lake Tahoe, the largest alpine lake in North America; Mount Whitney at , the highest point in the contiguous United States; and Yosemite Valley sculpted by glaciers from one-hundred-million-year-old granite, containing high waterfalls. The Sierra is home to three national parks, twenty-six wilderness areas, ten national forests, and two national monuments. These areas include Yosemite, Sequoia, and Ki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 916
Area codes 916 and 279 are telephone area codes in the North American Numbering Plan for Sacramento, the state capital, and most of its suburbs. Area code 916 was one of the first three original area codes established in California in October 1947, originally assigned to the most northern part, but remapped in 1950 to the northeast. Area code splits have reduced the numbering plan area to the greater Sacramento area. Area code 279 began service in an overlay in March 2018 to relieve an exhausted supply of central office codes in 916. History Originally, in 1947, the numbering plan area comprised the far northern portion of the state. In 1950, as part of a realignment of California's area codes, 916 was remapped to the northeastern corner of California, from the Sierra Nevada to the Central Valley. This involved changing Sacramento from area code 415 to 916. In 1958, 916 was reduced in geographic extend in the north, with the creation of new area code 209 for the southern pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AT&T Corporation
AT&T Corporation, an abbreviation for its former name, the American Telephone and Telegraph Company, was an American telecommunications company that provided voice, video, data, and Internet telecommunications and professional services to businesses, consumers, and government agencies. During the Bell System's long history, AT&T was at times the world's largest telecommunications company, the world's largest cable television operator, and a regulated monopoly. At its peak in the 1950s and 1960s, it employed one million people and its revenue ranged between US$3 billion in 1950 ($ in present-day terms) and $12 billion in 1966 ($ in present-day terms). In 2005, AT&T was acquired by " Baby Bell" and former subsidiary SBC Communications for more than $16 billion ($ in present-day terms). SBC then changed its name to AT&T Inc., with AT&T Corporation continuing to exist as a long-distance calling subsidiary until its dissolution on May 1, 2024. History Origins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overlay Plan
In telecommunications, an area code overlay complex is a telephone numbering plan that assigns multiple area codes to the same geographic numbering plan area (NPA). Area code overlays are implemented in territories of the North American Numbering Plan (NANP) to mitigate exhaustion of central office codes in growth areas. The method has been in use since 1992, and has been the exclusive method of area code relief since 2007. History From the inception of the North American Numbering Plan in 1947 until 1992, the only method of introducing new area codes was the area code split. It divided an existing numbering plan area (NPA) into multiple regions, one of which retained the existing area code. The other parts were each assigned a new NPA code. The retaining area was usually the historically more established or developed place, and required no numbering changes. It gained numbering capacity by acquiring the central office codes of the other areas, because those were delegated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 415
Area codes 415 and 628 are telephone area codes in the North American Numbering Plan (NANP) for the city of San Francisco and its northern suburbs in Marin County (across the Golden Gate), and the northeast corner of San Mateo County in the U.S. state of California. Area code 415 was one of the eighty-six original North American area codes established in 1947, but modified in geographic configuration later. Area code 628 was assigned in 2015 to form an overlay in that numbering plan area in mitigation of central office prefix exhaustion. History When the American Telephone and Telegraph Company (AT&T) introduced the first nationwide telephone numbering plan for Operator Toll Dialing in 1947, the state of California was divided into three numbering plan areas (NPAs) arranged as geographical zones in the southern part, the central part, and the northern part of the state. Area code 415 was assigned to central California, south of area code 916, and north of area code 213. It stretch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ukiah, California
Ukiah ( ; Pomo: ''Yokáya'', meaning "deep valley" or "south valley") is the county seat and largest city of Mendocino County, California, Mendocino County, in the North Coast (California), North Coast region of California. Ukiah had a population of 16,607 at the 2020 United States census, 2020 census. With its accessible location along the U.S. Route 101 in California, U.S. Route 101 corridor, Ukiah serves as the city center for Mendocino County and much of neighboring Lake County, California, Lake County. History The region has been inhabited by the Pomo for thousands of years. The modern area of Ukiah derives its name from the Pomo village (band) of Yokáya, meaning "deep valley" or "south valley". Russian Era Russian American company led by commander Ross visited Ukiah and the Russian River in 1750, during their exploration of the Alaskan Northwest and Hawaii. Eventually Point Cabrillo was visited and named by the Spanish explorers, although Cabrillo only lived in San Dieg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dixon, California
Dixon is a city in northeastern Solano County, California, Solano County, California, United States, located from the state capital, Sacramento, California, Sacramento. It has a Mediterranean climate, hot-summer mediterranean climate on the Köppen climate classification scale. Its population was 18,988 at the 2020 United States census. Other nearby cities include Vacaville, California, Vacaville, Winters, California, Winters, Davis, California, Davis, Woodland, California, Woodland, and Rio Vista, California, Rio Vista. History The first semi-permanent European settlement to develop in the Dixon area emerged during the California Gold Rush of the mid-19th century when the community of Silveyville was founded in 1852 by Elijah Silvey as a halfway point between the Pacific coast and the rich gold fields of Sacramento along a route commonly traveled by miners. In 1868, Central Pacific railroad came through the area and missed Silveyville by a few miles. As a result, local lead ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
