LincMad Telephone Area Codes & Splits

LincMad’s New Area Code Dates

Last updated 2020-03-08

Older splits and overlays (effective before 2016‑01‑01) — see oldnews.html;
Note: all dates are in year-month-day format, so 2022‑05‑20 = May 20, 2022.
Dates given in the form 2021–Q3 are 3rd Quarter of 2021, for example.
For overlays, the first date listed is for mandatory 10‑digit (or in some cases, 1+10‑digit) local calls; if no date is given, the area already has mandatory 10D/1+10D local calls. The second date is when numbers in the new overlay code can be assigned.

Old New Area Affected 10D/1+10D Dialing Overlay Test Number
614 380 OH: Columbus 2016-01-30 2016-02-27 380-380-1380
825 AB: entire province of Alberta, Canada 2016-04-09
336 743 NC: Greensboro, Highpoint, Winston-Salem, northwestern NC 2016-04-23 2016-05-23 743-743-1743
548 ON: London, Windsor, southwestern Ontario, Canada 2016-06-04 1–548 +
(610, 810, or 999) +
(–TEST/–8378 or
631 934 NY: Suffolk County (eastern Long Island) 2016-06-18 2016-07-16 934-990-TEST
522 expansion of 1-500 non-geographic services 2016-08-01
317 463 IN: Indianapolis 2016-10-15 2016-11-15 463-463-1463
315 680 NY: Syracuse, Utica 2017-02-11 2017-03-11 680-990-TEST
833 New toll-free code with 800, 888, 877, 866, 855 and 844 not appl. 2017-06-03 (none?)
332 NY: New York City (Manhattan only) 2017-06-10 332-990-TEST
323 213 CA: downtown Los Angeles; Note: 323 and 213 have carried out a “boundary elimination overlay,” similar to the way that area codes 214 and 972 in Dallas were split and later merged back into an overlay. All existing numbers remain unchanged, but 1+10D is mandatory for all calls. When the combined 213 & 323 area runs out of numbers, a third area code will be assigned for the same geographic area. In practice, the inner core will remain mostly 213 only, while the outer “donut” will be mostly 323 with some 213 numbers. 2017-07-08 2017-08-01 (none)
360 564 WA: Bellingham, Olympia, Vancouver WA; western Washington State. Note: Mandatory 10-digit dialing affects all of western Washington (area codes 206, 253, and 425, in addition to 360). However, new numbers in area code 564 will initially be assigned only in the 360 area (outside metro Seattle). As the Seattle metro area codes fill up, they will also begin assigning 564 numbers. 2017-07-29 2017-08-28 564-564-1564
208 986 ID: entire state of Idaho 2017-08-05 2017-09-05 986-986-1986
518 838 NY: Albany 2017-08-19 2017-09-19 838-990-TEST
521 non-geographic: more numbers for iPads, tablets, etc. — mostly non-dialable from ordinary phones 2017-09-21 (none)
717 223 PA: Harrisburg 2017-08-26 2017-09-26 223-990-TEST
210 726 TX: San Antonio 2017-09-23 2017-10-23 726-726-1726
456 Inbound International 56K Data Services (Discontinued) [*] 2017-11-27 (none)
445 PA: Philadelphia 2018-03-03 445-990-TEST
916 279 CA: Sacramento 2018-02-10 2018-03-10 279-279-1279
619 & 858 CA: San Diego; (“boundary elimination overlay”: 619/858 geographic split boundary from 1999 has been erased, forming the new 619 & 858 overlay, effective 2018‑06‑19) 2018-05-19 2018-06-19 (none)
805 820 CA: San Luis Obispo, Oxnard 2018-06-02 2018-06-30 820-820-1820
609 640 NJ: Trenton, Atlantic City 2018-08-18 2018-09-17 640-990-TEST
367 QC: eastern Québec, Canada, including Québec city and Gaspé Peninsula
l’est de la province de Québec, Canada, y compris la ville de Québec et la Gaspésie
(The test numbers 367–710–TEST and –BILL have been withdrawn.)
(Les numéros d’essai 367–710–8378 et –2455 ont été retirés.)
—[*] 2018-11-24 1–367 +
(210, 410, 510,
610, 710, 810,
ou/or 999) +
(–TEST/–8378 ou/or
876 658 Jamaica: entire nation 2019-03-30 2019-04-30 658-295-TEST
672 BC: entire province of British Columbia, Canada 2019-05-04 1–672 +
(580, 610, 710,
810, or 999) +
or –BILL$/–2455$)
689 FL: Orlando; (area code 321 continues to be also a non-overlay code for the “Space Coast” area) 2019-06-04 689-689-1689
524 non-geographic: more numbers for iPads, tablets, etc. — mostly non-dialable from ordinary phones 2019-07-12 (none)
510 341 CA: Oakland, Fremont, Richmond 2019‑06‑22 2019‑07‑22 341-341-1341
205 659 AL: Birmingham, Tuscaloosa 2019‑10‑12 2019‑11‑12 659-659-1659
937 (326) OH: Dayton 2020‑02‑08 2020‑03‑08 326-326-1326
803 (839) SC: Columbia, central 2020-04-25 2020-05-26 839-839-1839
(945) TX: Dallas and suburbs; area code 945 will be added to 214 & 972 & 469 overlay in late 2020 or early 2021 2020‑Q4 ?
2021‑Q1 ?
909 (840) CA: San Bernardino, Ontario 2021-01-23 2021-02-23 840-840-1840
850 (448) FL: Tallahassee, Pensacola, panhandle 2021-02-20 2021-03-20 448-448-1448
217 (447) IL: Champaign, Springfield 2021-02-27 2021-03-27 447-447-1447
(368) AB: entire province of Alberta, Canada, area codes 403, 780, 587, and 825; 368 overlay will be added on 2021‑05‑15 2021-05-15 t.b.a.
405 (572) OK: Oklahoma City 2021-04-24 2021-05-24 572-572-1572
(835?) PA: Philadelphia suburbs; (new overlay area code and exact dates not yet officially announced) 2021-Q2 ? t.b.a.
757 (948) VA: Norfolk, Virginia Beach (exact dates not yet officially announced) t.b.a. 2021-Q2 ? t.b.a.
(474) SK: entire province of Saskatchewan, Canada 2021-10-02 t.b.a.
(742) ON: Toronto suburbs (not including the city of Toronto); the 905 & 289 & 365 overlay will add 742, tentatively scheduled for 2021‑10‑16 2021‑10‑16
814 (582) PA: Altoona, Erie: originally scheduled as a split for 2012‑02‑01, with Erie changing to 582 and Altoona keeping 814. However, the PPUC reconsidered the split-or-overlay issue and seems to have decided on an overlay, and the date has been postponed to about late 2021. t.b.a. 2021-Q4? t.b.a.
506 (428) NB: entire province of New Brunswick, Canada •
l’ensemble de la province du Nouveau-Brunswick;
postponed to • remis à 2022‑04‑23
1–428 +
(580, 610, 810, or 999)
+ (–TEST/–8378
or –BILL$/–2455$)
709 (879) NL: entire province of Newfoundland & Labrador, Canada (postponed) • l’ensemble de la province de Terre-Neuve-et-Labrador, Canada (remis) 2018-11-10
1–879 +
(610, 620, 630, 640,
710, 777, 888, or 999)
+ (–TEST/–8378
or –BILL$/–2455$)
540 (tba) VA: Roanoke, Harrisonburg, outer suburbs of Washington DC (new overlay area code and exact dates not yet officially announced) t.b.a. 2022-Q2 ? t.b.a.
813 (tba) FL: Tampa (new overlay area code and exact dates not yet officially announced) t.b.a. 2022-Q3 ? t.b.a.
(354) QC: Laval, suburbs/banlieue of Montréal; postponed indefinitely • remis indéfiniment 2020-10-24
1–354 +
(580, 610, 710, 999)
+ (–TEST/–8378
or/ou –BILL$/–2455$)
[subject to change]
870 (327) AR: Jonesboro, Pine Bluff, southern, eastern, north central (surrounds Little Rock on 3 sides) originally announced for 2013‑05‑18 but postponed indefinitely, estimated 2023-Q2 2023 ? (suspended)
2023 ?
708 (464) IL: La Grange, certain suburbs south or west of Chicago; (Date pushed back again, from late 2017 to late 2021 to early 2024) t.b.a. early 2024 ? t.b.a.
513 (283) OH: Cincinnati; (suspended; exact dates not yet officially announced) 2024 ? 2024 ? t.b.a.
314 (557) MO: St. Louis; (suspended; exact dates not yet officially announced) 2024 ? 2024-Q3 ? t.b.a.
516 (tba) NY: Nassau County (western Long Island) (new overlay area code and exact dates not yet officially announced) t.b.a. 2024-Q3 ? t.b.a.
(227) MD: Silver Spring, suburbs of Washington, D.C.; (dates t.b.a.) 2024 ? t.b.a.
(263) QC: Montréal (city only, not including suburbs) • (la ville seulement, banlieue non incluse) 2024 ? t.b.a.
(468) QC: Hull, Sherbrooke, Trois-Rivières, Kuujjuaq 2025 ? t.b.a.
(679) MI: Detroit, Ann Arbor; (suspended; 679 will overlay 313, circa 2026, and expand to also overlay 734, circa 2038) 2026 ? 2026 ? t.b.a.
920 (274) WI: Green Bay, northeastern; (originally scheduled for 2014, current projected implementation 2026-Q4 !) t.b.a. 2014‑02‑22 postponed indefinitely 274-274-1274
440 (tba) OH: Lorain, Ashtabula; (new overlay area code not yet officially announced; relief postponed to about 2028) t.b.a. 2028 ? t.b.a.
618 (730) IL: East St. Louis, southern; (postponed) 2029 ? 2029 ? t.b.a.

black - new area code is already in use
blue - mandatory 10D (or 1+10D) dialing is in effect in preparation for an overlay
green - new area code not yet in use
red - special notations
t.b.a. - to be announced à communiquer • se anunciará

10D/1+10D” refers to the date on which it becomes mandatory to dial all local calls with the area code. In some areas, you must dial only the area code and number, for a total of 10 digits. In other areas, you must dial 1 plus the area code and number on all calls. In yet other areas, you may optionally dial 10D or 1+10D on some or all local calls, or for calls within your own area code overlay whether the call is local or toll. If no date is listed in this column, the area already has mandatory 10D/1+10D local calls, or the listing is for a non-geographic code (such as toll-free numbers) in which there are no local calls, as such.

Overlay” refers to the date on which the new code goes into effect; that is, the first date on which numbers in the new code may be assigned and used.

New area codes indicated with a question mark are speculation, based on available industry data. However, the information should not be considered reliable until it is officially confirmed by NANPA.

The Test Number is a special number (usually, though not always, not charged) that allows you to test whether all the links in the chain from you to a new area code are operating correctly. In order for you to reach a new area code, your premises equipment (office PBX, for example) must allow you to dial it. Then the telco central office must accept the new area code as valid and route it correctly. If the new area code is outside your LATA, your chosen long-distance carrier must also route the call correctly. Calling one of these numbers will usually reach a simple recording saying something like, “You have successfully completed a call to area code XXX.” Note that some test numbers are billable numbers, possibly at international rates. However, most test numbers in the U.S. and Canada will not bill. In cases where a test number is shown ending with –TEST, dial –8378; for –BILL, dial –2455. Where possible, a test number that is known to bill is marked with a “$” before the number.

Note that the test number for a new area code is usually disconnected within a few months after the mandatory date. If you dial one of the older test numbers shown here, you may reach an ordinary subscriber.

The Canadian province of Newfoundland and Labrador was scheduled to have an overlay of new area code 879 on existing area code 709, effective 2018‑11‑24, but evolving conditions led the CRTC to postpone the overlay. A new effective date of 2022‑05‑20 has been officially adopted.
fr: La province canadienne de Terre-Neuve-et-Labrador devait mettre en œuvre un recouvrement de l’indicatif 709 avec le nouvel indicatif 879, à compter du 2018‑11‑24, mais en raison des conditions évolutives le CRTC a remis le recouvrement. La date d’entrée en vigueur de 2022‑05‑20 a été officiellement adoptée.

The Canadian province of New Brunswick was scheduled to have an overlay of new area code 428 on existing area code 506, effective 2020‑11‑21, but evolving conditions led the CRTC to postpone the overlay. A new effective date of 2022‑04‑23 has been proposed, but not yet officially adopted.
fr: La province canadienne du Nouveau-Brunswick devait mettre en œuvre un recouvrement de l’indicatif 506 avec le nouvel indicatif 428, à compter du 2020‑11‑21, mais en raison des conditions évolutives le CRTC a remis le recouvrement. La date d’entrée en vigueur de 2022‑04‑23 a été proposée, mais n’a pas encore été officiellement adoptée.

In southern California, two old area code splits have been erased in a maneuver known as a “boundary elimination overlay”. In downtown Los Angeles, the boundary between 213 and 323 has been eliminated; in San Diego, the boundary between 619 and 858 was eliminated. In each case, the two existing area codes became an overlay, with numbers from either code assignable anywhere in the combined geographic territory.

Area code 456 was assigned for inbound international calls, particularly 56K ISDN data calls, where it was essential to connect the inbound call to a particular carrier’s network. However, by 2017 the need for such special routing had evaporated, so the 456 NPA has been discontinued. In 2023, 456 will be made available for assignment as a general-purpose NPA.

Area code 870, which covers most of the land area of the state of Arkansas, was scheduled to have an overlay on 2013‑05‑18, but number conservation measures extended its life by several years, so the overlay has been postponed indefinitely. Look for it some time around 2023.

The state of Illinois has not yet established effective dates for the 217/447 (2021‑03‑27), 708/464 (2024?), and 618/730 (2029?) overlays, which will be implemented as the existing codes run low on available numbers. However, those projected implementation dates have been pushed later several times, from “any minute now” to “five to ten years from now.” The plan does indicate that there will be a 13‑month transition period in each area for permissive and then mandatory 10‑digit dialing, test numbers, and finally assignment and activation of numbers in the new area code. (Update: the dates have been set for the 217 overlay, as shown above.)

There have been no area code splits — only overlays — since 2007‑10‑07, and no splits are planned. Canada has not had an area code split since 1999‑01‑25; Canada had its first overlay on 2001‑03‑25 and hasn’t looked back.

In fact, Canada is already planning overlays in every province, not including the territories of northern Canada, between now and 2022‑05‑22. At that point, the only parts of Canada Without overlays will be area code 867 (Yukon, Northwest Territories, and Nunavut) and area code 807 (northwestern Ontario, including Thunder Bay). On the chopping block also are local interprovincial 7‑digit dialing arrangements for Labrador City and Wabush, NL, and for Campbellton, NB, into the 418 & 581 & 367 area of eastern Québec. Those 7‑digit dialing arrangements will be terminated when Newfoundland & Labrador and New Brunswick implement mandatory 10‑digit local calls in preparation for their own overlays.
fr: En fait, le Canada prévoit déjà recouvrir tous les indicatifs (sauf 867 et 807) avant le 2022‑05‑22. À partir de cette date, les seules régions du Canada sans recouvrements seront l‘indicatif 867 — le Yukon, les T.N.O., et le Nunavut — et l‘indicatif 807 — le nord-ouest de l‘Ontario, y compris Thunder Bay. On va éliminer aussi les arrangements interprovinciaux de composition locale à 7 chiffres pour Labrador City et pour Wabush, et pour Campbellton, Nouveau-Brunswick, vers l‘est du Québec. Ces arrangements seront remis lorsque Terre-Neuve-et-Labrador et le Nouveau-Brunswick mettront en œuvre la composition locale obligatoire à 10 chiffres pour se préparer à leurs propres recouvrements.

The Caribbean island of St. Martin is divided between France and the Netherlands. The Dutch side, known as Sint Maarten, has joined the North American Numbering Plan as area code 721; Sint Maarten has also been assigned ISO country code SX, and the corresponding .sx Internet domain is now in use. The change was originally scheduled for 2010, but was postponed until 2011‑09‑30 (permissive), 2012‑09‑30 (mandatory). You now must use +1 721; from North America, dial 1‑721. All current 7-digit numbers in Sint Maarten begin with ‘5’, but new numbering ranges will be added in the future. The French side continues to use +590, or 011‑590 from North America (including calls from Sint Maarten to French Saint-Martin). (The French side now has the ISO country code MF, but .mf is not used for the Internet. Use either .gp (Guadeloupe) or .fr (France) for French St.‑Martin.)

nl: Het Caribische eiland Sint Maarten is verdeeld tussen Frankrijk en Nederland. Het Nederlandse deel heeft zich aangesloten bij de Noord-Amerikaanse Nummering Plan (+1) zoals het netnummer 721. De verandering was oorspronkelijk gepland voor 2010, maar werd uitgesteld. Permissieve bellen eindigde 2012‑09‑30, en de nieuwe nummers zijn nu verplicht. Alle huidige 7-cijferige nummers in Sint Maarten beginnen met ‘5’, maar nieuwe nummering reeksen kunnen worden toegevoegd. Gebruikt u de internationale landcode +1 721; uit Noord-Amerika, kies 1–721. Het Franse deel zal blijven +590 te gebruiken, of 011–590 uit Noord-Amerika. De andere Nederlandse eilanden in het Caribisch gebied niet veranderd. Sint Maarten is toegewezen ISO-landcode SX en de .sx Internet-domein.

fr: L’île antillaise de Saint-Martin est divisée entre la France et les Pays-Bas. La partie néerlandaise, Sint Maarten, a rejoint le Plan de Numérotation Nord-américain (+1) avec l’indicatif régional 721 et le domaine de l’Internet .sx (actuellement en vigueur). Pourtant, la transition a été remise. Composition facultative (composer +599 ou +1 721) a commencé le 2011‑09‑30; à partir du 2012‑09‑30, le +1 721 est obligatoire. Tous les numéros actuels à 7 chiffres à Sint Maarten commencent par ‘5’, mais d’autres numéros pourraient être ajoutés. Pendant la période permissive, on pouvait utiliser l’indicatif de pays +599 ou l’indicatif nord-américain +1 721; en Amérique du Nord, composer le 011–599 ou le 1–721. Maintenant il faut utiliser seulement +1 721. La partie française continuera d’utiliser +590, ou 011–590 d’Amérique du Nord.

Editorial commentary and explanatory notes about area code splits have now been moved off onto a separate page.

Don’t see a split listed here that used to be? Splits and overlays that have been cancelled or indefinitely postponed may no longer be shown.

Time Zone information is now available on the “Locator” page, which lists all active and upcoming area codes in numeric order with major cities.

There is an excellent listing of state/provincial regulatory agencies [link updated 2017‑05‑24] provided by the state of New York.

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