Area codes 707 and 369: Difference between revisions

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Area code 707 is a telephone area code in the North American Numbering Plan (NANP) for the northwestern part of the U.S. state of California. It was created by a split of area code 415 on March 1, 1959. It serves part of the northern San Francisco Bay Area, as well as the North Coast. Major cities in the area code 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.

History

When the North American Numbering Plan was created by AT&T 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 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 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 (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, 415, 916, 714, 408, 805, and 209), and the last new area code in the state until 619 was added in 1982.

When area code 530 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 original-format area codes (i.e., area codes with a 0 or 1 as their middle digit, the others being 310, 510, 818 and 909, 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^[1] 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 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, and on August 1, 2022, NANP announced that 369 would overlay 707 beginning February 1, 2023, leaving area code 627 available to be assigned presumably elsewhere in the future (it had been assigned as a prefix within 707).

Prior to October 2021, area code 707 had telephone numbers assigned for the central office code 988. In 2020, 988 was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021.^[2]

Service area

Del Norte County

Humboldt County

Lake County

Marin County

Mendocino County

Albion
Boonville
Branscomb
Calpella
Caspar
Cleone
Comptche
Covelo
Dos Rios
Elk
Fort Bragg
Gualala
Hopland
Inglenook
Keene Summit
Laytonville
Leggett
Little River
Manchester
Mendocino
Navarro
Noyo
Philo
Piercy
Point Arena
Potter Valley
Pudding Creek
Redwood Lodge
Redwood Valley
Rockport
Sherwood Valley Rancheria
Talmage
Ukiah
Westport
Willits
Yorkville

Napa County

Solano County

Sonoma County

Trinity County

References

^ "707 - 627 - 360 Area Code Split" (PDF). AT&T. Retrieved 2020-07-17.
^ "Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)" (PDF). North American Numbering Plan Administrator. January 8, 2021. Retrieved March 9, 2021.

External links

NANPA area code map of California

California area codes: 209/350, 213/323, 310/424, 408/669, 415/628, 510/341, 530, 559, 562, 619/858, 626, 650, 661, 707/369, 714/657, 760/442, 805/820, 818/747, 831, 909/840, 916/279, 925, 949, 951
	North: 541
West: Pacific Ocean	area code 707	East: 530, 916
	South: 415, 510/341, 925
Oregon area codes: 503/971, 541/458

39°48′N 123°36′W / 39.8°N 123.6°W / 39.8; -123.6

[1] "707 - 627 - 360 Area Code Split" (PDF). AT&T. Retrieved 2020-07-17.

[pl556-2] "Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)" (PDF). North American Numbering Plan Administrator. January 8, 2021. Retrieved March 9, 2021.

[1]

[2]

@@ Line 12: / Line 12: @@
 was the last of California's thirteen ''original-format'' area codes (i.e., area codes with a ''0'' or ''1'' as their middle digit, the others being [[Area code 310|310]], [[Area code 510|510]], [[Area code 818|818]] and [[Area code 909|909]], 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<ref>{{cite web|url=https://www.att.com/images/areacodes/707_split_map.pdf|title=707 - 627 - 360 Area Code Split|publisher=AT&T|access-date=2020-07-17}}</ref> 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]] 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, and on August 1, 2022, NANP announced that 369 would overlay 707 beginning February 1, 2023, leaving area code 627 available to be assigned presumably elsewhere in the future.
+In 1999, a three-way, two-phase split of area code 707 was scheduled by Pacific Bell<ref>{{cite web|url=https://www.att.com/images/areacodes/707_split_map.pdf|title=707 - 627 - 360 Area Code Split|publisher=AT&T|access-date=2020-07-17}}</ref> 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]] 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, and on August 1, 2022, NANP announced that 369 would overlay 707 beginning February 1, 2023, leaving area code 627 available to be assigned presumably elsewhere in the future (it had been assigned as a prefix within 707).
 Prior to October 2021, area code 707 had telephone numbers assigned for the [[central office code]] 988. In 2020, ''988'' was designated nationwide as a dialing code for the [[National Suicide Prevention Lifeline]], which created a conflict for exchanges that permit [[seven-digit dialing]]. This area code was therefore scheduled to transition to [[ten-digit dialing]] by October 24, 2021.<ref name="pl556">{{cite web|url=https://nationalnanpa.com/pdf/PL_556.pdf|date=January 8, 2021|publisher=North American Numbering Plan Administrator |title=Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)|access-date=March 9, 2021}}</ref>