Area codes 818 and 747 are

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, reac ...

s that primarily cover the San Fernando Valley region of

Los Angeles County Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the List of the most populous counties in the United States, most populous county in the United States and in the U.S. state of California, ...

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. 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 ''A ...

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 ...

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
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Cities in the 747/818 area code

Neighborhoods/districts in Los Angeles City

* Arleta *

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 ...

* Chatsworth * Encino * Granada Hills *

Lake View Terrace Lake View Terrace is a suburban neighborhood in the San Fernando Valley region of the City of Los Angeles, California.

* Lake Balboa, Los Angeles, Lake Balboa * Mission Hills * North Hills *

North Hollywood North Hollywood is a neighborhood of Los Angeles, California, located in the San Fernando Valley. The neighborhood contains the NoHo Arts District, the El Portal Theatre, several art galleries, and the Academy of TV Arts and Sciences. The North ...

* Northridge * Pacoima * Panorama City * Porter Ranch * Reseda *

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 weste ...

Sherman Oaks Sherman Oaks is a neighborhood in the city of Los Angeles, California located in the San Fernando Valley, founded in 1927. The neighborhood includes a portion of the Santa Monica Mountains, which gives Sherman Oaks a lower population density than ...

Studio City Studio City is a neighborhood in the city of Los Angeles, California, in the southeast San Fernando Valley, just west of the Cahuenga Pass. It is named after the studio lot that was established in the area by film producer Mack Sennett in 1927, ...

* Sunland * Sun Valley *

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 ...

* Tarzana * Toluca Lake * Tujunga * Valley Village *

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, ...

* West Hills * Winnetka * Woodland Hills

Los Angeles County

* Agoura Hills * Burbank * Calabasas *

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, ...

* Hidden Hills *

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 ''Figur ...

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. Ac ...

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 si ...

* Monte Nido * San Fernando * Topanga (mostly in the 310 area code) * Universal City *

Westlake Village Westlake Village is a city in Los Angeles County on its western border with Ventura County. The City of Westlake Village incorporated in 1981 becoming the 82nd municipality of Los Angeles County.Baker, Pam (2002). ''Thousand Oaks Westlake Vill ...

Ventura County

* Bell Canyon * North Ranch (part of

Thousand Oaks Thousand Oaks is the second-largest city in Ventura County, California, United States. It is in the northwestern part of Greater Los Angeles, approximately from the city of Los Angeles and from Downtown. It is named after the many oak tree ...

) * Oak Park

747 area code conflict with 747 SIP addresses

The 747 area code conflicted with 10-digit

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.

References

External links

{{DEFAULTSORT:Area Codes 747 And 818 747 And 818 Los Angeles County, California San Fernando Valley Telecommunications-related introductions in 1984 Telecommunications-related introductions in 2009 747 And 818