List of area code overlays
An area code overlay is a numbering plan area (NPA) in the North American Numbering Plan (NANP) that has multiple area codes assigned. Overlay plans are used to increase the number of available telephone numbers in a province, state, or region.[1]
The North American Numbering Plan Administrator (NANPA) maintains the definitive list of overlays in the United States.[2] The majority of overlays have occurred since 1995.[3] The process has been driven by fragmentation of numbering resources by a growing number of competitive local exchange carriers.
Active area code overlays
| Overlay code | Base NPA | Location | Notes |
|---|---|---|---|
| 220 | 740 | Central and southeastern Ohio | |
| 223 | 717 | South Central Pennsylvania | |
| 224 | 847 | Northern suburbs of Chicago, Illinois | |
| 226 | 519 | Southwestern Ontario | |
| 234 | 330 | Akron-Canton and Warren-Youngstown areas in Ohio | |
| 236 | 604 and 250 | British Columbia | |
| 240 | 301 | Washington, D.C. suburbs and panhandle of Maryland | |
| 249 | 705 | Northeastern and central Ontario | |
| 267 and 445 | 215 | Greater Philadelphia, Pennsylvania area and its surrounding suburbs | |
| 272 | 570 | Northeastern Pennsylvania, including the cities of Scranton, Wilkes-Barre, and Williamsport | |
| 279 | 916 | Sacramento, California and surrounding suburbs | |
| 281, 346, and 832 | 713 | Greater Houston, Texas | |
| 289 and 365 | 905 | Golden Horseshoe region of Ontario, including suburban Toronto, Hamilton, Oshawa, and the Niagara Peninsula in Ontario | |
| 321 | 407 | Central Florida | In addition to being the sole area code in the Space Coast region around the Kennedy Space Center, this is the only partial overlay area code in North America |
| 326 | 937 | Southwest Ohio | |
| 331 | 630 | Western suburbs of Chicago | |
| 332, 646 and 917 | 212 | New York City borough of Manhattan, except for the Marble Hill neighborhood, which is physically connected to The Bronx and uses 718 | |
| 339 | 781 | Suburban Boston, Massachusetts and most of the South Shore region | |
| 341 | 510 | San Francisco East Bay | |
| 343 | 613 | Ottawa and eastern Ontario | |
| 347 and 929 | 718 | New York City boroughs of The Bronx, Brooklyn, Queens, and Staten Island, as well as Marble Hill, a Manhattan neighborhood directly connected to The Bronx[4] | |
| 351 | 978 | North-central and most of northeastern Massachusetts | |
| 364 | 270 | Western half of Kentucky, including the Purchase area, the Western Coal Fields, and most of the Pennyrile[5] | |
| 367 and 581 | 418 | Eastern Quebec | |
| 380 | 614 | Columbus, Ohio, and suburbs | |
| 385 | 801 | Along the Wasatch Front of Utah, including Salt Lake City, Provo–Orem, and Ogden | |
| 424 | 310 | Southwestern Los Angeles County, California | |
| 430 | 903 | Northeastern Texas | |
| 431 | 204 | Manitoba | |
| 437 and 647 | 416 | Toronto, Ontario | |
| 438 | 514 | Island of Montreal, Quebec | |
| 440 | 216 | Parts of greater Cleveland, Ohio | |
| 442 | 760 | Southeastern California | |
| 443 and 667 | 410 | Baltimore, its suburbs, and the Eastern Shore of Maryland | |
| 458 | 541 | Most of Oregon, excluding its northwestern part | |
| 469 and 972 | 214 | Eastern portion of the Dallas–Fort Worth Metroplex in and around Dallas, Texas | |
| 470 and 678 | 404 and 770 | Metro Atlanta, Georgia | |
| 475 | 203 | Southwestern Connecticut | |
| 484 | 610 | Eastern and parts of southeastern Pennsylvania | |
| 531 | 402 | Eastern Nebraska | |
| 539 | 918 | Northeastern Oklahoma | |
| 551 | 201 | Northeastern New Jersey | |
| 564 | 360 | Western Washington | |
| 567 | 419 | Northwestern Ohio, including Toledo and Lima | |
| 571 | 703 | Northern Virginia | |
| 587 | 403 and 780 | Alberta | |
| 628 | 415 | San Francisco, Marin County and small portions of San Mateo County | |
| 629 | 615 | Nashville | |
| 639 | 306 | Saskatchewan | |
| 640 | 609 | Central and southeast New Jersey | |
| 657 | 714 | Northern Orange County, California | |
| 658 | 876 | Jamaica | |
| 659 | 205 | Western and central Alabama | |
| 669 | 408 | Southern Bay Area in California, encompassing much of Santa Clara County and Silicon Valley[6] | |
| 672 | 604 and 250 | British Columbia | |
| 680 | 315 | An area of Upstate New York including parts of Central New York and the North Country, with Syracuse as the main city in the region | |
| 681 | 304 | West Virginia | |
| 682 | 817 | Western part of the Dallas–Fort Worth Metroplex, in and around Fort Worth, Texas | |
| 689 | 407 | Orlando, Florida | |
| 720 | 303 | Denver, Colorado area | |
| 725 | 702 | Clark County, Nevada, including Las Vegas | |
| 726 | 210 | San Antonio, Texas | |
| 743 | 336 | The Greensboro, Winston-Salem, High Point, North Carolina metropolitan area | |
| 747 | 818 | Los Angeles, California area including Glendale/Burbank and Agoura/Calabasas areas | |
| 754 | 954 | Broward County, Florida, including Fort Lauderdale | |
| 769 | 601 | Central Mississippi | |
| 774 | 508 | South-central and most of southeastern Massachusetts, including Cape Cod and the Islands | |
| 778 | 604 and 250 | British Columbia | |
| 779 | 815 | Northern and north-central Illinois, including the Rockford, Freeport, and Kankakee areas | |
| 782 | 902 | Nova Scotia and Prince Edward Island on 30 November 2014 | |
| 786 | 305 | Miami-Dade County, Florida and the Florida Keys | |
| 820 | 805 | Santa Barbara County, California and surrounding areas | |
| 825 | 403 and 780 | Alberta | |
| 829 and 849 | 809 | Dominican Republic | |
| 848 | 732 | Central New Jersey | |
| 857 | 617 | Boston, Cambridge and Quincy, Massachusetts | |
| 862 | 973 | Northern New Jersey | |
| 872 | 312 and 773 | Chicago, Illinois | |
| 873 | 819 | Gatineau and western Quebec | |
| 878 | 412 and 724 | Metro Pittsburgh, Pennsylvania | |
| 917 | 212, 332, 347, 646, 718, and 929 | The entirety of New York City (The Bronx, Brooklyn, Manhattan, Queens, and Staten Island) | Primarily for cellular phones, pagers, and voicemail machines[4] |
| 930 | 812 | Southern Indiana | |
| 934 | 631 | Suffolk County, New York, on Long Island | |
| 938 | 256 | Northern Alabama | |
| 939 | 787 | Puerto Rico | |
| 947 | 248 | Oakland County, Michigan | |
| 959 | 860 | Northern and western Connecticut | |
| 971 | 503 | Northwestern Oregon, including the Portland, Salem, and Astoria metropolitan areas | |
| 980 | 704 | The Charlotte, North Carolina metropolitan area | |
| 984 | 919 | The Raleigh-Durham, North Carolina metropolitan area | |
| 986 | 208 | Idaho |
Pending and planned overlays
Various new area codes are planned or proposed.[7] A few overlay implementations (557 MO, 564 WA, 975 MO) have been suspended, often because wasteful allocation of telephone numbers has been mitigated by number pooling or other conservation efforts.
- 368 is planned for overlay of 587 and 825 starting in May 15, 2021.[8]
- 387 is reserved as a future overlay for 416.
- 428 is planned for overlay of 506 starting on November 21, 2020.[9]
- 447 is planned for overlay of 217, with no precise time frame for integration.
- 448 is planned for overlay of 850 starting in February 2021.
- 464 is also reserved for 708, to be integrated once the original area code is exhausted.
- 474 is planned for overlay of 306 and 639 starting in October 2021.[10]
- 572 is planned for overlay of 405.[11]
- 679, planned to overlay 313 in Michigan.[12]
- 742 is reserved as a future overlay for 905.
- 833 is proposed to overlay non-geographic toll-free codes 800 and 844 through 888 in mid-2017,[13] largely due to failure of the Federal Communications Commission to enforce its regulations regarding hoarding, brokering or warehousing toll-free numbers.[14]
- 835 is proposed to overlay 610 and 484. This plan has been suspended by the Pennsylvania Public Utilities Commission.[15]
- 839 is planned for overlay of 803 starting in May 2020.[16]
- 840 is planned for overlay of 909.[17]
- 948 is planned for an overlay of 757, either in late 2021 or early 2022
gollark: I doubt it.
gollark: Time to initiate Protocol Eta-41.
gollark: You could just do it now. Stop going on about being a bad admin and such.
gollark: But not admin-purple, more violet.
gollark: <@509849474647064576> should be purple.
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
- http://www.nanpa.com/enas/npaSince1995Report.do
- Madison, Linc. "LincMad's Area Code Locator Table". LincMad. September 29, 2005. Accessed October 28, 2005.
- "PSC Selects Overlay for New Area Code in Western Kentucky: Current numbers in area code 270 remain unchanged; decision means 10-digit dialing for local calls beginning in 2014". Retrieved December 17, 2012.
- "New 669 Area Code Joins South Bay 408 Region Saturday". KPIX-TV.
- http://www.nanpa.com/enas/plannedNpasNotInServiceReport.do
- "Relief for area codes 403, 587, 780, and 825 in Alberta". crtc.gc.ca. 3 May 2019. Retrieved 13 March 2020.
- "Hello 428: New Brunswick's new area code has been assigned". CBC. Retrieved 13 March 2020.
- "Saskatchewan's third area code will be 474". CBC. Retrieved 13 March 2020.
- Stecklein, Janelle. "Central Oklahoma adding 572 area code". Norman Transcript. Retrieved 13 March 2020.
- "NANPA : Number Resources - NPA (Area) Codes".
- http://www.nanpa.com/pdf/TFN_Exhaust_Letter_100814.pdf
- David B. Caruso (2011-04-20). "Hot numbers when you least expect them". Associated Press. Retrieved 2013-11-07.
- Area Codes in Southeast Pennsylvania
- "Columbia to Get New Telephone Area Code: 839". WLTX. Retrieved 13 March 2020.
- "New 840 area code for phone numbers will eventually be added to the 909". Fontana Herald News. Retrieved 13 March 2020.
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