LincMad's Area Code Split Dates
Last updated 2008-11-29
Older splits (permissive before 2006-01-01) —
see oldnews.html;
Note: all dates are in year-month-day format, so 2009-04-02 = April 2, 2009.
Dates given in the form 2009–Q2 are 2nd Quarter of 2009, for example.
| Old |
New |
Area Affected |
Permissive |
Mandatory |
Test Number |
| 706 |
762 |
GA: northern Georgia except Atlanta metro area
(OVERLAY) |
NONE |
2006-05-16 |
$762-222-7777 |
| 310 |
424 |
CA: San Pedro, Torrance, Santa Monica, Malibu,
incl. Avalon (Santa Catalina Island)
(service-specific overlay, then overlay,
then emergency split revived by CPUC,
then postponed indefinitely, finally implemented as an
OVERLAY in
2006.) |
NONE |
2006-08-26 |
424-424-0424 |
| 519 |
226 |
ON: southwestern peninsula, London, Windsor
(OVERLAY) |
NONE |
2006-10-28 |
226-510-TEST
226-610-TEST
$226-610-BILL
226-810-TEST |
| 514 |
438 |
QC: Montréal
(OVERLAY) |
NONE |
2006-10-28 |
438-510-TEST
438-610-TEST
$438-610-BILL
438-810-TEST |
| 815 |
779 |
IL: Rockford, Joliet
(OVERLAY) |
NONE |
2007-03-17 |
779-779-0000 |
604
250 |
778 |
BC: entire province (OVERLAY EXPANSION)
(778 was originally a concentrated overlay on Vancouver and the
urban portion of 604, but was expanded to a general overlay on the
entire province, including the 250 area code and the rural areas of 604.) |
NONE |
2007-07-04 |
none |
| 985 |
504 |
LA: Lower Plaquemines Parish and the Mississippi River Delta
(REALIGNMENT)
(The (504) area code rate centers of Delacroix, Lake Catherine, St. Bernard,
and Yscloskey merged into the New Orleans rate center.
The (985) area code rate centers of Buras, Pointe-a-la-Hache, and Port Sulphur
also merged into New Orleans/(504). The Venice rate center changed from (985)
to (504). The (985) 358, 534, 564, 644, 687, and 814 prefixes reverted to (504);
the (985) 238 and 333 prefixes changed to (504) but with new 7-digit local numbers.) |
2007-07-29 |
2008-05-01 |
none |
| 630 |
331 |
IL: Aurora, Hinsdale
(OVERLAY) |
NONE |
2007-10-07 |
$331-330-0331 |
| 505 |
575 |
NM: Las Cruces, Roswell, Taos
(not Albuquerque, Santa Fe, Farmington) |
2007-10-07 |
2008-10-05 |
575-600-1234
$575-580-0575
$575-295-0000 |
| 418 |
581 |
QC: Québec city, Gaspé
(OVERLAY) |
NONE |
2008-09-19 |
581-510-TEST
$581-510-BILL
581-610-TEST
$581-610-BILL
581-710-TEST
$581-710-BILL
581-810-TEST
$581-810-BILL |
403
780 |
587 |
AB: entire province
(OVERLAY)
(587 overlays both 403 [Calgary, southern] and
780 [Edmonton, northern]) |
NONE |
2008-09-19 |
587-510-TEST
$587-510-BILL
587-610-TEST
$587-610-BILL
587-810-TEST
$587-810-BILL |
| 714 |
657 |
CA: Anaheim, northern Orange County
(OVERLAY) |
NONE |
2008-09-23 |
657-222-0002
657-222-0222 |
| 304 |
681 |
WV: entire state
(OVERLAY) |
NONE |
2009-03-28 |
681-990-TEST |
| 801 |
385 |
UT: Salt Lake City, Provo, Ogden
(OVERLAY) (originally to be a split in 2001,
then postponed, postponed again, postponed yet again, and finally reinstated
as an overlay) |
NONE |
2009-03-29 |
385-600-1234 |
| 818 |
747 |
CA: San Fernando Valley (Los Angeles County)
(OVERLAY) |
NONE |
2009-05-18 |
747-222-TEST |
| 760 |
442 |
CA: Oceanside, Escondido, northern San Diego County,
Palm Springs, Death Valley, eastern Sierra Nevada, inland areas:
originally scheduled as a split for late 2008, changed to an
OVERLAY at the last minute. All existing 760 numbers will
remain unchanged. |
NONE |
2009-11-21 |
442-442-1442
442-730-TEST
442-973-TEST |
| 270 |
364 |
KY: Paducah, Henderson, Hopkinsville, westernmost tip
(not Bowling Green, Owensboro) |
2010-04-01 |
t.b.a. |
364-364-4444 |
| 613 |
343 |
ON: Ottawa, eastern (OVERLAY) |
NONE |
2010-09-18 |
343-510-TEST
$343-510-BILL
343-610-TEST
$343-610-BILL
343-810-TEST
$343-810-BILL
|
| 618 |
730 |
IL: East St. Louis, southern
(OVERLAY) |
NONE |
t.b.a. |
t.b.a. |
| 217 |
447 |
IL: Champaign, Springfield
(OVERLAY) |
NONE |
t.b.a. |
t.b.a. |
black - new area code is already mandatory (use only the new area code)
blue - new area code in permissive status (use
either old or new)
green - new area code not yet in use (use old area
code until permissive date)
red - special notations
"Permissive" refers to the date at which it becomes possible
to use either the old or the new area code. You should begin using the new
number as soon as possible after the permissive date.
"Mandatory" refers to the date at which it becomes necessary
to use the new area code. If you dial the old area code after the mandatory
date, you will reach an error recording, or worse, a wrong number.
An overlay is
a new area code that occupies the same geographic territory as the existing area
code. Existing numbers are not changed, but new prefixes are assigned from the
new area code.
A realignment
is the assignment of prefixes at the border of one area code to an existing
adjacent area code. Only the indicated area is affected; other numbers in either
area code are unchanged.
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 state of Illinois has not yet established effective dates for the
618/730 and 217/447 overlays, which will be implemented as the existing codes
run low on available numbers.
The mandatory date for the 270/364 split in western Kentucky has not yet
been established.
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.
More details about area code splits and overlays can be found on the
AreaCode-Info pages,
maintained by John Cropper and
Eric Morson.
There is also an excellent listing of
state/provincial regulatory agencies
provided by the state of New York.
Return to top of this page
Go to "old news" page (older splits)
Go to postponed splits and overlays
Return to LincMad's Telephone Area Code page
Got an old number and don't know the new area code?
Try the cumulative listing of area code splits,
numerically by original area code.
©2008 Linc Madison,
a.k.a. LincMad Consulting, all rights reserved. URL: <http://www.LincMad.com>
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