Area codes 707 and 369: Difference between revisions

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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 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 area codes with only 0 or 1 in middle position, 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. 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.^[2]

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.^[3]

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.
^ "Planning Letter No. 599 – NPA 369 and 707 All-Services Overlay (California)" (PDF). NANPA. 2022-08-01. Retrieved 2023-01-14.
^ "Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)" (PDF). North American Numbering Plan Administrator. 2021-01-08. Retrieved 2021-03-09.

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: 541/458
West: Pacific Ocean	area code 707/369	East: 530, 916/279
	South: 415/628, 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.

[2] "Planning Letter No. 599 – NPA 369 and 707 All-Services Overlay (California)" (PDF). NANPA. 2022-08-01. Retrieved 2023-01-14.

[pl556-3] "Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)" (PDF). North American Numbering Plan Administrator. 2021-01-08. Retrieved 2021-03-09.

[1]

[2]

[3]

@@ Line 1: / Line 1: @@
-{{short description|Area code for northwestern California, United States}}
+{{short description|Area codes in northwestern California, United States}}
 {{California area codes image map|707}}
-'''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 (California)|North Coast]]. Major cities in the area code include [[Napa, California|Napa]], [[Sebastopol, California|Sebastopol]], [[Vallejo, California|Vallejo]], [[Benicia, California|Benicia]], [[Fairfield, California|Fairfield]], [[Santa Rosa, California|Santa Rosa]], [[Windsor, California|Windsor]], [[Healdsburg]], [[Rohnert Park]], [[Petaluma, California|Petaluma]], [[Fort Bragg, California|Fort Bragg]], [[Rio Vista, California|Rio Vista]], [[Crescent City, California|Crescent City]], [[Eureka, California|Eureka]], [[Clearlake, California|Clearlake]], [[Vacaville, California|Vacaville]], [[Dixon, California|Dixon]], and [[Ukiah, California|Ukiah]].
+'''Area codes 707 and 369''' are telephone [[area code]]s 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 (California)|North Coast]]. Major cities in the area codes include [[Napa, California|Napa]], [[Sebastopol, California|Sebastopol]], [[Vallejo, California|Vallejo]], [[Benicia, California|Benicia]], [[Fairfield, California|Fairfield]], [[Santa Rosa, California|Santa Rosa]], [[Windsor, California|Windsor]], [[Healdsburg]], [[Rohnert Park]], [[Petaluma, California|Petaluma]], [[Fort Bragg, California|Fort Bragg]], [[Rio Vista, California|Rio Vista]], [[Crescent City, California|Crescent City]], [[Eureka, California|Eureka]], [[Clearlake, California|Clearlake]], [[Vacaville, California|Vacaville]], [[Dixon, California|Dixon]], and [[Ukiah, California|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 plan|overlay numbering plan]] in the service area.
 ==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 (U.S.)|Sierra Nevada]] to the [[Central Valley (California)|Central Valley]]. The coastal area to the west was assigned [[area code 415]]. With this change, Sacramento was also changed to area code 916.
+When the [[AT&T Corporation|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 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 (California)|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 [[Area code 213|213]], 415, 916, [[Area code 714|714]], [[Area code 408|408]], [[Area code 805|805]], and [[Area code 209|209]]), and the last new area code in the state until [[Area code 619|619]] was added in 1982.
@@ Line 10: / Line 10: @@
 When [[area code 530]] was split from area code 916 on November 1, 1997, the [[Dixon, California|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.
-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.
+was the last of California's thirteen area codes with only ''0'' or ''1'' in middle position, 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. 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.<ref>{{cite web
+|publisher=NANPA
+|title=Planning Letter No. 599 – NPA 369 and 707 All-Services Overlay (California)
+|date=2022-08-01
+|access-date=2023-01-14
+|url=https://www.nationalnanpa.com/planning_letters/PL_599.pdf
+}}</ref>
-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>
+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=2021-01-08|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=2021-03-09}}</ref>
 ==Service area==
@@ Line 225: / Line 231: @@
 *[[Penngrove, California|Penngrove]]
 *[[Petaluma, California|Petaluma]]
+*Rio Dell
-*[[Rio Dell, Sonoma County, California|Rio Dell]]
 *[[Rio Nido, California|Rio Nido]]
 *[[Rohnert Park, California|Rohnert Park]]
@@ Line 258: / Line 264: @@
 * {{Area code footer|Map=CA}}
-{{Area code box | State = CA | This = area code 707
+{{Area code box | State = CA | This = area code 707/369
-| N = [[area code 541|541]]
+| N = [[area codes 541 and 458|541/458]]
-| S = [[area code 415|415]], [[area codes 510 and 341|510/341]], [[area code 925|925]]
+| S = [[area codes 415 and 628|415/628]], [[area codes 510 and 341|510/341]], [[area code 925|925]]
-| E = [[area code 530|530]], [[area code 916|916]]
+| E = [[area code 530|530]], [[area codes 916 and 279|916/279]]
 | W = [[Pacific Ocean]]
 |S1 = OR}}