From Wikipedia, the free encyclopedia
"679 area code" redirects here. For the telephonic country code, see
+679 .
This is a list of future
area codes in the
North American Numbering Plan (NANP) that are in the planning stages for relief of central office code exhaustion in the given
numbering plan areas (NPAs). The dates are subject to change during implementation as published in the official NANP Administrator Planning Letters .
New area code
Affected NPA
Jurisdiction
Projected exhaust date
[1]
[2]
Effective date
257
236/672/778 ,
604 ,
250
British Columbia
2025 – 4th Qtr
[3]
May 24, 2025
[4]
[5]
357
559
California
2025 – 3rd Qtr
March 26, 2025
[6]
457
318
Louisiana
2026 – 1st Qtr
September 25, 2025
[7]
460
705/249/683
Ontario
2032 – 2nd Qtr
[3]
TBD
471
662
Mississippi
2026 – 3rd Qtr
TBD
483
334
Alabama
2026 – 3rd Qtr
February 23, 2026
[8]
[9]
537
905/289/365/742
Ontario
2029 – 2nd Qtr
[3]
TBD
568
368/403/587/780/825
Alberta
2028 – 1st Qtr
[3]
TBD
621
713/281/832/346
Texas
2025 – 3rd Qtr
January 23, 2025
[10]
[11]
679
313
Michigan
2027 – 2nd Qtr
November 7, 2025
[12]
[13]
729
423
Tennessee
2025 – 3rd Qtr
March 5, 2025
[14]
[15]
738
213/323
California
2026 – 2nd Qtr
November 1, 2024
[16]
[17]
748
970
Colorado
2026 – 1st Qtr
July 7, 2025
[18]
[19]
821
864
South Carolina
2024 – 3rd Qtr
August 19, 2024
[20]
837
530
California
2025 - 3rd Qtr
[21]
January 31, 2025
[22]
851
902/782
Nova Scotia
2029 – 2nd Qtr
[3]
TBD
924
507
Minnesota
2025 – 1st Qtr
August 30, 2024
[23]
[24]
942
416/647/437
Ontario
2025 – 4th Qtr
[3]
April 26, 2025
[4]
[25]
NPA boundary changes, overlay expansions, etc.
564
206
Washington
2026 – 1st Qtr
April 5, 2025
[26]
Other area codes that are expected to exhaust by the end of 2027 that do not have an approved relief plan:
352 ,
502 ,
520 ,
603 ,
714/657 ,
718/347/929 ,
765 and
949 .
[27]
^
"NPAs Exhausting in the Next 36 Months" (.xlsx) . NANPA. 2015-04-10. Retrieved 10 April 2015 .
^
"Planned NPAs Not Yet in Service" (.do) . North American Numbering Plan Administrator (NANPA) . Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
a
b
c
d
e
f
"Telecom Decision CRTC 2022-308" . Government of Canada – CRTC Archives . Canadian Radio-television and Telecommunications Commission (CRTC). 8 November 2024. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
a
b
"Telecom Decision CRTC 2023-135" . Government of Canada – CRTC Archives .
Canadian Radio-television and Telecommunications Commission (CRTC). 10 May 2023. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"NANPA Planning Letter 612 – NPA 257 to Overlay NPA 236/250/604/672/778" (.pdf) . NANPA . 11 May 2023. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"NANPA Planning Letter 624 – NPA 357 to Overlay NPA 559 (California)" (PDF) . NANPA . 6 Feb 2024. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"NANPA Planning Letter 617 – NPA 457 to Overlay NPA 318 (Louisiana)" (PDF) . NANPA . 23 June 2023. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"NANPA Planning Letter 626 – NPA 483 to Overlay NPA 334 (Alabama)" (PDF) . NANPA . 7 May 2024. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"Area Code 483 - Details, official location, official service date, history and time zone" .
^
"NANPA Planning Letter 623 – NPA 621 to Overlay NPA 281/346/713/832 (Texas)" (PDF) . NANPA . 6 December 2023. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"Area Code 621 - Details, official location, official service date, history and time zone" .
^
"NANPA Planning Letter 618 – NPA 679 to Overlay NPA 313 (Michigan)" (PDF) . NANPA . 13 July 2023. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"Area Code 679 - Details, official location, official service date, history and time zone" . www.areacodehelp.com . Retrieved 2023-11-07 .
^
"NANPA Planning Letter 619 – NPA 729 to Overlay NPA 423 (Tennessee)" (PDF) . NANPA . 24 July 2023. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"Area Code 729 - Details, official location, official service date, history and time zone" . www.areacodehelp.com . Retrieved 2023-11-07 .
^
"NANPA Planning Letter 614 – NPA 738 to Overlay NPA 213/323 (California)" (PDF) . NANPA . 16 May 2023. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"Area Code 738 - Details, official location, official service date, history and time zone" . www.areacodehelp.com . Retrieved 2023-11-07 .
^
"NANPA Planning Letter 625 – NPA 748 to Overlay NPA 970 (Colorado)" (PDF) . NANPA . 13 February 2024. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"Area Code 748 - Details, official location, official service date, history and time zone" .
^
"Planning Letter PL-606, NPA 821 and 864 All-Services Overlay (South Carolina)" (PDF) . NANPA. 2022-11-28. Retrieved 2022-12-02 .
^
"CPUC Provides More Numbers for 530 Area Code" .
^
"NANPA Planning Letter 621 – NPA 837 and 530 All-Services Overlay (California)" (.pdf) . NANPA . 8 August 2023. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"NANPA Planning Letter 616 – NPA 924 to Overlay NPA 507 (Minnesota)" (PDF) . NANPA . 12 June 2023. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"Area Code 924 - Official Usage, Details, Location, History" . www.areacodehelp.com . Retrieved 2023-11-07 .
^
"NANPA Planning Letter 613 – NPA 942 to Overlay NPA 416/437/647 (Toronto, Ontario)" (PDF) . NANPA . 11 May 2023. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"NANPA Planning Letter 620 – NPA 564 to Overlay NPA 206 (Washington)" (PDF) . NANPA . 3 August 2023. Retrieved 16 July 2024 . {{
cite web }}
: CS1 maint: url-status (
link )
^
"2024-1 NRUF and NPA Exhaust Analysis" (PDF) . NANPA . Retrieved 16 July 2024 .