List of future North American area codes Information & List of future North American area codes Links at HealthHaven.com

This is a list of future area codes in the North American Numbering Plan, which are intended to be used as needed for additional telephone numbers in various locations. Relief formats are subject to change.

Area code	State/Province	Affected area codes	Format	Effective date
227	Maryland	240, 301	Overlay	None
236	British Columbia	778	TBD	None
249	Ontario	705	Overlay	2011-03-19 March 19, 2011
274	Wisconsin	920	Overlay	2010-03-10 March 10, 2010
283	Ohio	513	Overlay	None
341	California	510	Overlay	None
343	Ontario	613	Overlay	2010-05-17 May 17, 2010
364	Kentucky	270	Split	2011-10-29 October 29, 2011
369	California	707	Split (3 way)	None
380	Ohio	614	Overlay	None
447	Illinois	217	Overlay	None
458	Oregon	541	Overlay	2010-02-10 February 10, 2010^[1]
464	Illinois	708	Overlay	None
470	Georgia	678, 404, 770^[2]	Multiple overlay	None
531	Nebraska	402	Overlay	2011-03-26 March 26, 2011
534	Wisconsin	715	Overlay	2010-08-14 August 14, 2010
557	Missouri	314	Overlay	None
564	Washington	360	Multiple overlay	None
579	Quebec	450	Overlay	2010-08-21 August 21, 2010
627	California	707	Split (3 way)	None
628	California	415	Overlay	None
659	Alabama	205	Overlay	None
667	Maryland	443	Overlay	None
669	California	408	Overlay	None
679	Michigan	313	Overlay	None
689	Florida	407	Overlay	None
721	Sint Maarten	None^[3]	New addition	2010-05-31 May 31, 2010^[4]
730	Illinois	618	Overlay	None
737	Texas	512	Overlay	None
764	California	650	Overlay	None
825	Alberta	587	TBD	None
935	California	619	Overlay	None
938	Alabama	256	Overlay	2010-07-10 July 10, 2010^[5]
959	Connecticut	860	Overlay	None
975	Missouri	816	Overlay	None
984	North Carolina	919	Overlay	None

[edit] See also

List of North American Numbering Plan area codes

[edit] Notes and references

^ Oregon gets new area code: 458
^ Area codes 404 and 770 are distinct and border one another. Area code 678 was added as an overlay of both of them, and 470 would be an overlay of 678.
^ Sint Maarten is not currently part of the North American Numbering Plan; it uses country code 599 along with the rest of the Netherlands Antilles.
^ "PL-396: Introduction of NPA 721 (Sint Maarten, Netherlands Antilles)". North American Numbering Plan Administration. 2009-10-02. http://www.nanpa.com/pdf/PL_396.pdf. Retrieved 2009-10-23.
^ 938 Coming in 2 years

[edit] External links

NANP Planned NPAs Not Yet in Service

[code458-0] Oregon gets new area code: 458

[1] Area codes 404 and 770 are distinct and border one another. Area code 678 was added as an overlay of both of them, and 470 would be an overlay of 678.

[2] Sint Maarten is not currently part of the North American Numbering Plan; it uses country code 599 along with the rest of the Netherlands Antilles.

[3] "PL-396: Introduction of NPA 721 (Sint Maarten, Netherlands Antilles)". North American Numbering Plan Administration. 2009-10-02. http://www.nanpa.com/pdf/PL_396.pdf. Retrieved 2009-10-23.

[code938-4] 938 Coming in 2 years

[1]

[2]

[3]

[4]

[5]