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 that primarily cover the
San Fernando Valley
The San Fernando Valley, known locally as the Valley, is an urbanized valley in Los Angeles County, California. Located to the north of the Los Angeles Basin, it contains a large portion of the City of Los Angeles, as well as unincorporated ar ...
region of
Los Angeles County
Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the most populous county in the United States and in the U.S. state of California, with 9,861,224 residents estimated as of 2022. It is the ...
in the U.S. state of California.
Area code 818 was created in a split from
area code 213
Area codes 213 and 323 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of California. They are assigned to a numbering plan area (NPA) that comprises, roughly, the area of central Los Angeles, and includes ...
on January 7, 1984. On June 14, 1997, area code 818 was split to form
area code 626
Area code 626 is a telephone area code that was split from area code 818 in the U.S. state of California, on June 14, 1997. It covers most of the San Gabriel Valley and nearby areas in the northeastern portion of Los Angeles County, California, U ...
for most of the
San Gabriel Valley
The San Gabriel Valley ( es, Valle de San Gabriel) is one of the principal valleys of Southern California, lying immediately to the east of the eastern city limits of the city of Los Angeles, and occupying the vast majority of the eastern part ...
. On May 18, 2009, area code 747 went into service as an
overlay
Overlay may refer to:
Computers
*Overlay network, a computer network which is built on top of another network
*Hardware overlay, one type of video overlay that uses memory dedicated to the application
*Another term for exec, replacing one process ...
.
History
After the standardization of American telephone area codes in 1947, almost all of Los Angeles County used the 213 area code. Because the population and phone usage of the Los Angeles metropolitan area greatly increased during the 1980s and 1990s, the 213 area code was split into several new area codes, including the 818 and
310
__NOTOC__
Year 310 ( CCCX) was a common year starting on Sunday (link will display the full calendar) 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 '' ...
area codes. The 818 area code entered service on January 7, 1984, making Los Angeles one of the first major cities to be split between multiple area codes.
Area code 626
Area code 626 is a telephone area code that was split from area code 818 in the U.S. state of California, on June 14, 1997. It covers most of the San Gabriel Valley and nearby areas in the northeastern portion of Los Angeles County, California, U ...
was carved out of the eastern portion on June 14, 1997.
In November 1999, it was proposed that "at some future date", a new 747 area code would split from 818, the new 747 serving the southern and western portions of the San Fernando Valley. This proposal sat dormant until 2007, when the telephone industry and the California Public Utilities Commission began studying implementing this 818/747 split, or possibly an overlay of all of 818 with 747. Public hearings were held, and the overall public sentiment was for an overlay rather than the split, since they could retain the 818 area code for their existing telephone numbers. The new 747 area code would be used for numbers associated with new service.
On April 24, 2008, the CPUC decided that area code 747 would overlay area code 818 effective May 18, 2009. From that date, new numbers could be assigned to the new area code. Callers within the 818 and 747 area codes would be required to dial the area code (including calls to the same area code; cell phones could dial with or without the "1" prefix) for all calls. There was a grace period starting October 11, 2008 during which callers could still complete calls using the seven-digit number. Since mid-April 2009, calls must be dialed with the area code and number; otherwise, the call will not be completed (cell phone users can omit the "1").
The first telephone number block to be assigned to area code 747 became effective on October 11, 2009.Local calling guide: NPA-747 /ref>
Cities in the 747/818 area code
Neighborhoods/districts in
Los Angeles City
Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world' ...
Canoga Park
Canoga Park is a neighborhood in the San Fernando Valley region of the City of Los Angeles, California. Before the Mexican–American War, the district was part of a rancho, and after the American victory it was converted into wheat farms and t ...
Shadow Hills
Shadow Hills (originally Hansen Heights) is a neighborhood in the Verdugo Mountains and northeastern San Fernando Valley, within the city of Los Angeles, California.
Geography
Shadow Hills is in the northwestern Verdugo Mountains, near the western ...
Sun Valley Sun Valley may refer to:
Places Australia
* Sun Valley, New South Wales
* Sun Valley, Queensland, a suburb of Gladstone
United States
* Valley of the Sun, a region that covers the Phoenix metropolitan area
*Sun Valley, Arizona
* Sun Valley, Los A ...
*
Sylmar
Sylmar is a suburban neighborhood in the San Fernando Valley and is the northernmost neighborhood within the City of Los Angeles. Historically known for its profusion of sylvan olive orchards, Sylmar can trace its past to the 18th century and th ...
Van Nuys
Van Nuys () is a neighborhood in the central San Fernando Valley region of Los Angeles, California. Home to Van Nuys Airport and the Valley Municipal Building, it is the most populous neighborhood in the San Fernando Valley.
History
In 1909, t ...
Burbank
Burbank may refer to:
Places Australia
* Burbank, Queensland, a suburb in Brisbane
United States
* Burbank, California, a city in Los Angeles County
* Burbank, Santa Clara County, California, a census-designated place
* Burbank, Illinois, ...
Glendale Glendale is the anglicised version of the Gaelic Gleann Dail, which means ''valley of fertile, low-lying arable land''.
It may refer to:
Places Australia
* Glendale, New South Wales
** Stockland Glendale, a shopping centre
*Glendale, Queensland, ...
La Cañada Flintridge
LA most frequently refers to Los Angeles, the second largest city in the United States.
La, LA, or L.A. may also refer to:
Arts and entertainment Music
* La (musical note), or A, the sixth note
* "L.A.", a song by Elliott Smith on ''Figure ...
*
La Crescenta-Montrose
La Crescenta-Montrose () is an unincorporated area in Los Angeles County, California, United States. The community is bordered by Glendale to the south and west, La Cañada Flintridge to the east, and Angeles National Forest to the north. Acc ...
*
Malibu Lake
Malibou Lake is a small reservoir surrounded by a residential development in the Santa Monica Mountains near Agoura Hills, California. Adjacent to Malibu Creek State Park and within the Santa Monica Mountains National Recreation Area, it is sit ...
San Fernando
San Fernando may refer to:
People
*Ferdinand III of Castile (c. 1200–1252), called ''San Fernando'' (Spanish) or ''Saint Ferdinand'', King of Castile, León, and Galicia
Places Argentina
*San Fernando de la Buena Vista, city of Greater Buenos ...
*
Topanga
Topanga () (Tongva: ''Topaa'nga'') is a census-designated place (CDP) in western Los Angeles County, California, United States. Located in the Santa Monica Mountains, the community exists in Topanga Canyon and the surrounding hills. The narrow s ...
Bell Canyon
Bell Canyon is a major drainage of the Santa Ana Mountains in Orange County, California in the United States. Bell Creek (also known as Bell Canyon Creek or Arroyo de las Campanas) flows about in a southerly direction to its confluence with San ...
Session Initiation Protocol
The Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, and terminating communication sessions that include voice, video and messaging applications. SIP is used in Internet telephony, in private IP telepho ...
addresses on some VoIP networks such as Gizmo5 (in the format 747NXXXXXX). Because of this conflict, some outgoing calls from VoIP networks using a 10-digit SIP address could have been mistaken for calls originating from the actual 747 area code.
These addresses are no longer in use as Gizmo5 service was discontinued as of April 3, 2011.
See also
*
List of California area codes
This is a list of area codes in California with service territory and installation dates.
* 209 – Stockton, Modesto, Merced, Turlock; the northern San Joaquin Valley and the central Sierra Nevada range. (Split from 415 on October 26, 1957; s ...
*
List of NANP area codes
The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (''NPA codes'', or ''area codes''), consisting of three di ...