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, rea ...
s in the
North American Numbering Plan
The North American Numbering Plan (NANP) is an integrated telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1, World Numbering Zone ...
(NANP) for the northwestern part of the
U.S. state
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...
of
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
. The area codes serve part of the northern
San Francisco Bay Area
The San Francisco Bay Area, commonly known as the Bay Area, is a List of regions of California, region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose, California, S ...
, as well as the
North Coast North Coast or Northcoast may refer to :
Antigua and Barbuda
* Major Division of North Coast, an urban area and major division in the parish of Saint John
* North Coast, Barbuda, an administrative district of Barbuda
Australia
* New South Wa ...
Benicia
Benicia ( , ) is a city in Solano County, California, located on the north bank of the Carquinez Strait in the North Bay region of the San Francisco Bay Area. It served as the capital of California for nearly thirteen months from 1853 to 1854. ...
Healdsburg
Healdsburg is a city located in Sonoma County, California, United States. At the 2020 census, the city had a population of 11,340.
Healdsburg is centered on a 19th-century plaza.
History
Early inhabitants of the local area included the Pomo ...
,
Rohnert Park
Rohnert Park is a city in Sonoma County, California, United States, located approximately north of San Francisco. The population at the 2020 United States census was 44,390. It is an early planned city and is the sister city of Hashimoto in ...
,
Petaluma
Petaluma is a city in Sonoma County, California, United States, located in the North Bay region of the San Francisco Bay Area. Its population was 59,776 according to the 2020 census.
Petaluma's name comes from the Miwok village named ''Péta ...
,
Fort Bragg
Fort Bragg (formerly Fort Liberty from 2023–2025) is a United States Army, U.S. Army Military base, military installation located in North Carolina. It ranks among the largest military bases in the world by population, with more than 52,000 m ...
Eureka
Eureka often refers to:
* Eureka (word), a famous exclamation attributed to Archimedes
* Eureka effect, the sudden, unexpected realization of the solution to a problem
Eureka or Ureka may also refer to:
History
* Eureka Rebellion, an 1854 g ...
Vacaville
Vacaville is a city located in Solano County, California, United States. It is located from Sacramento, California, Sacramento and from San Francisco, it is on the edge of the Sacramento Valley in Northern California. The city was founded in ...
, 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 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 busi ...
(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
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 19 ...
, with the exclusion of the city of Sacramento, which used area code 415. California area codes were reorganized geographically in 1950, so that 916 was assigned to a numbering plan area that comprised only the northeastern part from the
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 primari ...
to the Central Valley. The coastal area to the west was assigned area code 415. With this change, Sacramento was also changed to area code 916.
On March 1, 1959, numbering plan area 415 was divided in a
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 di ...
(without permissive dialing period) in which the northern part of the numbering plan area (Solano County and north thereof) received area code 707, which was California's eighth area code (along with
213
Year 213 ( CCXIII) was a common year starting on Friday of the Julian calendar. At the time (in Rome), it was known as the Year of the Consulship of Aurelius and Calvinus (or, less frequently, year 966 ''Ab urbe condita''). The denomination 213 ...
, 415, 916,
714
__NOTOC__
Year 714 ( DCCXIV) was a common year starting on Monday of the Julian calendar. The denomination 714 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe ...
,
408
__NOTOC__
Year 408 ( CDVIII) was a leap year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Bassus and Philippus (or, less frequently, year 1161 ''Ab urbe condita''). The denomination ...
,
805
__NOTOC__
Year 805 ( DCCCV) was a common year starting on Wednesday of the Julian calendar, the 805th year of the Common Era (CE) and Anno Domini (AD) designations, the 805th year of the 1st millennium, the 5th year of the 9th century, and the ...
, and 209), and the last new area code in the state until
619
__NOTOC__
Year 619 ( DCXIX) was a common year starting on Monday of the Julian calendar. The denomination 619 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe f ...
was added in 1982.
When
area code 530
Area codes 530 and 837 are telephone area codes in the North American Numbering Plan (NANP) in northeastern and Northern California. 530 was created in 1997 in an area code split of 916 and 837 was added to the same numbering plan area as an ov ...
was split from area code 916 on November 1, 1997, the Dixon area was renumbered from area code 916 to 707 and switched from the Sacramento local access and transport area (LATA) into the San Francisco LATA.
707 was the last of California's thirteen area codes with only ''0'' or ''1'' in middle position, the others being
310
__NOTOC__
Year 310 ( CCCX) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Andronicus and Probus (or, less frequently, year 1063 ''Ab urbe condita''). The denomination 310 ...
,
510
__NOTOC__
Year 510 ( DX) was a common year starting on Friday of the Julian calendar. In the Roman Empire, it was known as the Year of the Consulship of Severinus without colleague (or, less frequently, year 1263 ''Ab urbe condita''). The d ...
,
818
__NOTOC__
Year 818 ( DCCCXVIII) was a common year starting on Friday of the Julian calendar.
Events
By place Byzantine Empire
* Vikings known as Rus' (Norsemen) plunder the north coast of Anatolia (modern Turkey), marking the first re ...
and
909
__NOTOC__
Year 909 ( CMIX) was a common year starting on Sunday of the Julian calendar.
Events
By place
Britain
* King Edward the Elder and his sister, Princess Æthelflæd of Mercia, raid Danish East Anglia and bring back the relics o ...
, all of which, in addition to 619, were introduced decades after 707's debut) to require relief from a "new format" area code (those with 2–8 as their middle digit, which were introduced beginning in 1995 when the NANP ran out of the original format NPAs), despite explosive growth in the area, particularly its southern portion, as well as the proliferation of cell phones and pagers.
In 1999, a three-way, two-phase split of area code 707 was scheduled by Pacific Bell such that a new area code (627) would have served most of Napa and Sonoma counties and small portions of Marin and Mendocino counties, while another new area code (369) would have served Solano County as well as a small portion of Napa County, beginning in December 2000 and October 2001, respectively. However, due to the success of
number pooling
Telephone number pooling, thousands-block number pooling, or just number pooling, is a method of allocating telephony numbering space of the North American Numbering Plan in the United States. The method allocates telephone numbers in blocks of 1,0 ...
in preserving numbering resources, the California Public Utilities Commission cancelled these actions on July 27, 2000. Still, after twenty more years of continued growth in the region, it was determined that 707 would indeed require relief. On August 1, 2022, the NANP Administrator set the effective implementation date of the overlay of 707 by the new 369 NPA to February 1, 2023.
Prior to October 2021, area code 707 had telephone numbers assigned for the
central office code
The North American Numbering Plan (NANP) is an integrated telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Numbering Zone 1 and has the ...
988. In 2020, ''988'' was designated nationwide as a dialing code for the
National Suicide Prevention Lifeline
The Suicide and Crisis Lifeline in the United States, or Suicide Crisis Helpline in Canada, and formerly known as the National Suicide Prevention Lifeline, is a suicide prevention and crisis help line to a network of a large number of crisis ce ...
, which created a conflict for exchanges that permit
seven-digit dialing
Seven-digit dialing is a telephone dialing procedure customary in some territories of the North American Numbering Plan (NANP) for dialing telephone numbers in the same numbering plan area (NPA). NANP telephone numbers consist of ten digits, of wh ...
. This area code was therefore scheduled to transition to
ten-digit dialing
Ten-digit dialing is a telephone dialing procedure in the countries and territories of the North American Numbering Plan (NANP). It is the practice of including the area code of a telephone number when Dialling (telephony), dialing to initiate a t ...
Pelican Bay State Prison
Pelican Bay State Prison (PBSP) is a supermax prison in Crescent City, California. The prison takes its name from a shallow bay on the Pacific coast, about to the west.
Facilities
The prison is located in a detached section of Crescent Cit ...
Arcata
Arcata (; ; ) is a city adjacent to the Arcata Bay (northern) portion of Humboldt Bay in Humboldt County, California, United States. At the 2020 census, Arcata's population was 18,857. Arcata was first founded in 1850 as Union, was officially ...
Eureka
Eureka often refers to:
* Eureka (word), a famous exclamation attributed to Archimedes
* Eureka effect, the sudden, unexpected realization of the solution to a problem
Eureka or Ureka may also refer to:
History
* Eureka Rebellion, an 1854 g ...
Fortuna
Fortuna (, equivalent to the Greek mythology, Greek goddess Tyche) is the goddess of fortune and the personification of luck in Religion in ancient Rome, Roman religion who, largely thanks to the Late Antique author Boethius, remained popular thr ...
Korbel
Korbel may refer to:
Companies
*Korbel Champagne Cellars
Places
* Korbel, Humboldt County, California
* Korbel, Sonoma County, California
People
* Daniel Korbel, Canadian bridge player.
* Jan O. Korbel (born 1975), German biologist
* Josef Kor ...
*
Manila
Manila, officially the City of Manila, is the Capital of the Philippines, capital and second-most populous city of the Philippines after Quezon City, with a population of 1,846,513 people in 2020. Located on the eastern shore of Manila Bay on ...
*
McKinleyville
McKinleyville (formerly Minorsville) is a census-designated place (CDP) in Humboldt County, California. McKinleyville is located north of Arcata, at an elevation of . The population was 15,177 at the 2010 census, up from 13,599 at the time of t ...
Samoa
Samoa, officially the Independent State of Samoa and known until 1997 as Western Samoa, is an island country in Polynesia, part of Oceania, in the South Pacific Ocean. It consists of two main islands (Savai'i and Upolu), two smaller, inhabited ...
*
Scotia
Scotia is a Latin placename derived from ''Scoti'', a Latin name for the Gaels, first attested in the late 3rd century.Duffy, Seán. ''Medieval Ireland: An Encyclopedia''. Routledge, 2005. p. 698. The Romans referred to Ireland as "Scotia" aro ...
Trinidad
Trinidad is the larger, more populous island of the Republic of Trinidad and Tobago, the country. The island lies off the northeastern coast of Venezuela and sits on the continental shelf of South America. It is the southernmost island in ...
Cobb
Cobb may refer to:
People
* Cobb (surname), a list of people and fictional characters with the surname Cobb
* Cobb Rooney (1900–1973), American professional football running back
Places New Zealand
* Cobb River
* Cobb Reservoir
* Cobb Power ...
Loch Lomond
Loch Lomond (; ) is a freshwater Scottish loch which crosses the Highland Boundary Fault (HBF), often considered the boundary between the lowlands of Central Scotland and the Highlands.Tom Weir. ''The Scottish Lochs''. pp. 33-43. Published by ...
Lucerne
Lucerne ( ) or Luzern ()Other languages: ; ; ; . is a city in central Switzerland, in the Languages of Switzerland, German-speaking portion of the country. Lucerne is the capital of the canton of Lucerne and part of the Lucerne (district), di ...
Albion
Albion is an alternative name for Great Britain. The oldest attestation of the toponym comes from the Greek language. It is sometimes used poetically and generally to refer to the island, but is less common than "Britain" today. The name for Scot ...
Caspar
Caspar is a masculine given name. It may refer to:
People
* Caspar (magus), a name traditionally given to one of the Three Magi in the Bible who brought the baby Jesus gifts
*Caspar Austa (born 1982), Estonian cyclist
*Caspar Badrutt (1848–1904) ...
Elk
The elk (: ''elk'' or ''elks''; ''Cervus canadensis'') or wapiti, is the second largest species within the deer family, Cervidae, and one of the largest terrestrial mammals in its native range of North America and Central and East Asia. ...
*
Fort Bragg
Fort Bragg (formerly Fort Liberty from 2023–2025) is a United States Army, U.S. Army Military base, military installation located in North Carolina. It ranks among the largest military bases in the world by population, with more than 52,000 m ...
Laytonville
Laytonville is a census-designated place (CDP) in Mendocino County, California, United States. It is located north-northwest of Willits, at an elevation of . The population was 1,152 at the 2020 census, down from 1,227 at the 2010 census.
Geog ...
Little River
Little River may refer to several places:
Australia Streams New South Wales
*Little River (Dubbo), source in the Dubbo region, a tributary of the Macquarie River
* Little River (Oberon), source in the Oberon Shire, a tributary of Coxs River (Haw ...
*
Manchester
Manchester () is a city and the metropolitan borough of Greater Manchester, England. It had an estimated population of in . Greater Manchester is the third-most populous metropolitan area in the United Kingdom, with a population of 2.92&nbs ...
Philo
Philo of Alexandria (; ; ; ), also called , was a Hellenistic Jewish philosopher who lived in Alexandria, in the Roman province of Egypt.
The only event in Philo's life that can be decisively dated is his representation of the Alexandrian J ...
Potter Valley
Potter Valley is a census-designated place in Mendocino County, California, United States. It is located north-northeast of Ukiah, at an elevation of at the headwaters of the East Fork Russian River. The CDP population was 665 at the 2020 ce ...
American Canyon
American Canyon (previously known as Napa Junction) is a city located in southern Napa County, California, United States, northeast of San Francisco, part of the San Francisco Bay Area. The 2020 United States census, 2020 census reported the c ...
St. Helena
Saint Helena (, ) is one of the three constituent parts of Saint Helena, Ascension and Tristan da Cunha, a remote British overseas territory.
Saint Helena is a volcanic and tropical island, located in the South Atlantic Ocean, some 1,874 km ...
Zinfandel
Zinfandel (also known as Primitivo) is a variety of black-skinned wine grape. The variety is grown in over 10 percent of California vineyards. DNA analysis has revealed that it is genetically equivalent to the Croatian grapes Crljenak Kašt ...
Solano County
*
Benicia
Benicia ( , ) is a city in Solano County, California, located on the north bank of the Carquinez Strait in the North Bay region of the San Francisco Bay Area. It served as the capital of California for nearly thirteen months from 1853 to 1854. ...
Travis AFB
Travis Air Force Base is a United States Air Force base under the operational control of Air Mobility Command (AMC), located three miles (5 Kilometre, km) east of the central business district of the city of Fairfield, California, Fairfield, i ...
*
Vacaville
Vacaville is a city located in Solano County, California, United States. It is located from Sacramento, California, Sacramento and from San Francisco, it is on the edge of the Sacramento Valley in Northern California. The city was founded in ...
Asti
Asti ( , ; ; ) is a ''comune'' (municipality) of 74,348 inhabitants (1–1–2021) located in the Italy, Italian region of Piedmont, about east of Turin, in the plain of the Tanaro, Tanaro River. It is the capital of the province of Asti and ...
Bodega Bay
Bodega Bay () is a shallow, rocky inlet of the Pacific Ocean on the coast of northern California in the United States. It is approximately across and is located approximately northwest of San Francisco and west of Santa Rosa, California, S ...
Boyes Hot Springs
Boyes Hot Springs (also called Boyes Springs or The Springs) is a census-designated place (CDP) in Sonoma Valley, Sonoma County, California, United States. The population was 6,215 people at the 2020 census. Resorts in Boyes Hot Springs, El Vera ...
*
Camp Meeker
Camp Meeker is an unincorporated community, Sonoma County, United States, located on the Bohemian Highway, between Occidental and Monte Rio. It has approximately 350 homes on properties ranging from a couple thousand square feet to many acres ...
Cazadero Cazadero may refer to:
* Cazadero (volcano), a mountain in Argentina
* Cazadero, California, U.S.
* Cazadero, Oregon, U.S.
* Cazadero Dam, a dam in the U.S. state of Oregon
See also
*
{{disambiguation, geo ...
Fort Ross
Fort Ross (, , Kashaya: ) is a former Russian establishment on the west coast of North America in what is now Sonoma County, California. Owned and operated by the Russian-American Company, it was the hub of the southernmost Russian settlemen ...
Guerneville
Guerneville () is an unincorporated community and census-designated place in the Russian River Valley of Sonoma County, California, United States. The town is historically known as a logging community. It was founded by the Guerne family in the ...
Healdsburg
Healdsburg is a city located in Sonoma County, California, United States. At the 2020 census, the city had a population of 11,340.
Healdsburg is centered on a 19th-century plaza.
History
Early inhabitants of the local area included the Pomo ...
Petaluma
Petaluma is a city in Sonoma County, California, United States, located in the North Bay region of the San Francisco Bay Area. Its population was 59,776 according to the 2020 census.
Petaluma's name comes from the Miwok village named ''Péta ...
Rohnert Park
Rohnert Park is a city in Sonoma County, California, United States, located approximately north of San Francisco. The population at the 2020 United States census was 44,390. It is an early planned city and is the sister city of Hashimoto in ...
Two Rock
Two Rock (; archaic: Black Mountain; ' ()) is a mountain in Dún Laoghaire–Rathdown, Ireland. It is high and is the 382nd highest mountain in Ireland. It is the highest point of the group of hills in the Dublin Mountains which comprises Tw ...
Ruth
Ruth (or its variants) may refer to:
Places France
* Château de Ruthie, castle in the commune of Aussurucq in the Pyrénées-Atlantiques département of France
Switzerland
* Ruth, a hamlet in Cologny
United States
* Ruth, Alabama
* Ruth, Ark ...