351 overlays 978 in Massachusetts.
|
424 overlays 310 in the southwestern part of Los Angeles County, California.
|
430 overlays 903 in northeast Texas.
|
438 overlays 514 on the Island of Montreal,
Quebec.
|
442 overlays 760 in the southeastern part of California.
|
443 overlays 410 in Baltimore, its suburbs, and the Eastern Shore of Maryland.
|
469 and 972 overlay 214 in the eastern portion of the Dallas/Fort Worth Metroplex (including the city of Dallas). As in the Houston situation discussed above, 972 was originally a geographic split from 214, but was converted to an overlay once 469 was implemented.
|
484 overlays 610 in eastern and parts of southeastern Pennsylvania.
|
551 overlays 201 in northeastern New Jersey.
|
567 overlays 419 in northwest Ohio, including Toledo and Lima.
|
571 overlays 703 in Northern Virginia.
|
587 overlays area code 403 in southern Alberta and area code 780 in northern Alberta (Canada).
|
636 overlays area code 314 in the western suburbs of St. Louis, Missouri.
|
646, in the area code 212 areas for the Manhattan borough of New York City.
|
647 overlays 416 in the City of Toronto,
Ontario.
|
657 overlays 714 in northern Orange County,
California.
|
678 overlays both 404 and 770 in metro Atlanta.
|
682 overlays 817 in the western part of the Dallas-Fort Worth Metroplex, including the city of Fort Worth.
|
720 overlays 303 in the Denver, Colorado area.
|
747 overlays 818 in the Los Angeles, California area.
|
754 overlays 954 in the Fort Lauderdale, Florida area.
|
769 overlays 601 in central Mississippi.
|
774 overlays (parts of) 508 in Massachusetts.
|
778 overlays 604 and 250 in British Columbia
|
779 overlays 815 in Northern and North Central Illinois. Some of the larger cities affected are Rockford, Freeport, and Kankakee.
|
786 is a concentrated overlay of area code 305 in Miami-Dade County,
Florida. It does not include the 305-only Florida Keys.
|
848 overlays 732 in central New Jersey.
|
849 overlays both 809 and 829 in the Dominican Republic.
|
857 overlays (parts of) 617 in Massachusetts including Boston,
Cambridge.
|
862 overlays 973 in northern New Jersey.
|
872 overlays 312 and 773 in Chicago, Illinois.
|
878 overlays 412 and 724 in metro Pittsburgh.
|
917, mostly for cellular phones,
pagers, and voicemail in both 212/646 and 718/347 areas.
938 overlays 256 in northern Alabama.
| 939 overlays 787 in Puerto Rico.
| 947 overlays 248 in Oakland County, Michigan.
| 971 is a concentrated overlay of area code 503 in northwestern Oregon, including the Portland and Salem areas. On April 27, 2008, the coastal area of Clatsop and Tillamook Counties, which had previously been exempted from the overlay and used only 503, were added to the overlay.
| 980 overlays 704 in the Charlotte metropolitan region.
| Proposed
236 proposed as a future overlay in British Columbia after 778 is exhausted.
| 343 will overlay 613 in Ottawa and surrounding Eastern Ontario beginning in 2010.
| Area code 385 will overlay 801 in Utah, starting as early as March 2009. [4
Area code 447 is planned for overlay of 217, with no precise time frame for integration.
| Area code 464 is also reserved for 708, to be integrated once the original area code is exhausted.
| 470 will supplement the 678 overlay already present for 404 and 770 in Metro Atlanta. The new area code has existed since 2001-09-02, but will not be used until all assignable 678 NXX codes are exhausted. [5 .
475 planned to overlay Connecticut
area code 203.
| 564 planned for Washington
area code 253; this plan is suspended, as 253 is not estimated for exhaust until 2025. [6
531 will overlay area code 402 in eastern Nebraska.
| Area Code 679, planned to overlay 734 in Michigan.
| 681 will overlay 304 in West Virginia starting in 2009
| 825 proposed as a future overlay in Alberta after 587 is exhausted.
| 835 proposed to overlay 610 and 484. This plan has been suspended by the Pennsylvania Public Utilities Commission. [7
959, for 860 areas. Proposed 1999, [ but withdrawn.
Area code 984 is planned for overlay of 919. This was originally planned in 2001 to take place in 2002, but has been postponed due to implementation of number pooling.
| See also
| Overlay plan
| References
| Haar, Dan and Vanessa Hua. "Regulators Have Area Code Plan". The Courant. August 18, 1999. Accessed October 28, 2005.
| NANPA : Number Resources - NPA (Area) Codes
| Madison, Linc. "LincMad's Area Code Locator Table". LincMad. September 29, 2005. Accessed October 28, 2005.
| - ^
- Utah Division of Public Utilities
| NANPA PL-269
| nanpa.com/reports/NPA_Relief_Activity_Status_Report_110107.pdf
| Area Codes in Southeast Pennsylvania
| List_of_area_code_overlays References
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