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LATA List and Some Descriptions

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Mark J. Cuccia

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May 15, 1996, 3:00:00 AM5/15/96

While inTRA-LATA competition (particularly being able to choose a
primary 1+/0+ default toll carrier for inTRA-LATA) and even *local*
competition is becoming more available, as well as the local carriers
being able to offer toll inTER-LATA, and the concept of "LATA's" might
become meaningless or obsolete in the near future, LATA's still do
exist. LATA's (<L>ocal <A>ccess <T>ransport <A>reas) were "created" in
the early to mid 1980's as part of the divestiture (breakup) of the
one corporate Bell System and the MFJ (<M>odification of <F>inal
<J>udgement). As mentioned below, there was an "initial" LATA scheme,
but there were some changes to this just at the time of divestiture
and the beginnings of "Equal Access" services.

I am interested in what the original LATA scheme really was intended
to be, including the LATA codes. I mention below *some* of the
original intended LATA's and how they were actually changed when
LATA's "officially" took effect in January 1984. If anyone has a list
of the 1982/83 LATA's and the associated "LATA Codes", I'd be
interested in some of these original but later modified LATA
situations.

LATA codes are three digit codes assigned to each LATA or LATA-Like
territory. I don't know who did the original numbering scheme
(AT&T/Bell? DOJ? USITA? NECA? FCC? or a combination of them?), nor do
I know who maintains the LATA numbering for any slight modifications
which might be necessary (Bellcore? FCC? ATIS or their forums? etc).
The LATA codes are used for "administrative" and "organizational"
purposes. They are not really intended to be network routing or
switching codes (but what a particular interexchange carrier does
within its *own* network for routing and switching is really its own
business), but used to organize listings of NPA-NXX codes of a
particular carrier or switching entity as well as for billing
functions, such as division of toll revenues. LATA codes are indicated
in such materials as:

tariffs filed with the FCC by AT&T and other toll carriers;
Bellcore TRA products;
NECA products;
etc.

The listing below has been compiled from various sources, particularly
from tariff filings.

So any additions, corrections, further details will be appreciated!

------------------

LATA Names and Service Regions by LATA Number:

Within "Bell" LATA's, there CAN BE and ARE independent telco central offices
(there are 164 total "Bell" Latas);

Within an "independent" LATA, there CAN BE and ARE are central offices of
"other" independents;

LATA's CAN and DO cross state/NPA lines --
sometimes in rather large chunks;
sometimes just 'zigzagging' about a state/NPA boundary.

There are even cross-state situations where one LATA contains central
offices of an adjacent state served by a DIFFERENT Regional Bell Company

(i.e. Some Bell South LATA's can extend into portions of TX and AR,
and include central offices of Southwestern Bell as well as some
small local independent telcos;

Likewise, some Southwestern Bell LATA's can extend into portions of
LA, MS, TN, KY and include central offices of Bell South as well as
some small local independent telcos).

1NX (NYNEX)
2NX (Bell Atlantic)
3NX (Ameritech)
4NX (Bell South)
5NX (Southwestern Bell)
6NX (US West)
7NX (Pacific Telesis)

8NX (Alaska, Hawaii, Puerto Rico, US Virign Islands;
also includes 'pseudo' LATA's for Canada, other Caribbean, etc)

9NX (LATA's and Lata-like regions of:
Cincinnati Bell, Southern New England (Bell), large "independent"
telco territory)

This listing represents the Bell, "offshore" and "independent" LATA's
of the US (including AK, HI, PR, USVI, etc) as finalized around 1984/85.
There were some modifications made to the "initial" LATA scheme as
submitted in 1982/83.

Originally, there were to be only 160 "Bell" LATA's. After some AT&T and
DOJ/Greene negotiations, there were four additional "Bell" LATA's. There
were also to have been some additional "independent" LATA's using "9NX"
codes such as:
955 Dothan AL - GTE
(9NX code?) Las Vegas NV - Centel
(9NX code?) Bryan TX - GTE
959 Jefferson City & Columbia MO - shared United and GTE
(9NX code?) Ashland KY - GTE

Some of the above "deleted" independent LATA's had their boundaries
redrawn to become a "Bell" LATA, by adding some Bell central offices of an
adjacent "initial/existing" Bell LATA. Others were just completely absorbed
into an intial/existing adjacent "Bell" LATA. In addition, there were also
some *additional* "independent" LATA's added to the "initial" scheme.

Of the "Bell" LATA's, you will note that for the most part, they are all
numbered with consecutive even numbers. There are a few exceptions to this
in the listing. In the listing below, there are some "odd" numbered "Bell"
LATA's as well as some "skipped" even number sequences. This might give
some insight into what the 1982/83 "initial" LATA scheme was.

1NX - NYNEX (12 total)
===========

120 Maine
122 New Hampshire
124 Vermont
126 western MA
128 eastern MA
130 Rhode Island
132 New York City METRO (also includes two ratecenters of extreme
southwestern CT handled by NY Telephone; includes Long Island
and portions of some counties north of Bronx NYCity)
133 Poughkeepsie NY
134 Albany NY
136 Syracuse NY
138 Binghampton NY
140 Buffalo NY

2NX - Bell Atlantic (19 total)
===================

220 Atlantic Coastal area (NJ)
222 Delaware Valley area (NJ)
224 northern NJ area
226 Capital PA
228 Philadelphia PA (includes entire state of Delaware)
230 Altoona PA
232 northeastern PA
234 Pittsburgh PA
236 Washington DC METRO (includes MD and VA suburbs)
238 Baltimore MD
240 Hagerstown MD
242 Salisbury MD
244 Roanoke VA
246 Culpepper VA
248 Richmond VA
250 Lynchburg VA
252 Norfolk VA
254 Charleston WV
256 Clarksburg WV

3NX - Ameritech (29 total)
===============

320 Cleveland OH
322 Youngstown OH
324 Columbus OH
325 Akron OH
326 Toledo OH
328 Dayton OH
330 Evansville IN
332 South Bend IN
334 Auburn-Huntington IN
336 Indianapolis IN
338 Bloomington IN
340 Detroit MI
342 upper peninsula MI
344 Saginaw MI
346 Lansing MI
348 Grand Rapids MI
350 northeastern WI
352 northwestern WI
354 southwestern WI
356 southeastern WI
358 Chicago IL METRO (includes some WI and IN suburbs)
360 Rockford IL
362 Cairo IL
364 Sterling IL
366 Forrest IL
368 Peoria IL
370 Champaign IL
374 Springfield IL
376 Quincy IL

4NX - Bell South (38 total)
================
(note within Florida, there are *also* "sub-LATA zones" as per
state regulatory stipulations. They are known as "Equal Access
Exchange Areas", EAEA's; this *also* happens in "independent"
areas in Florida using '9NX' LATA codes)

420 Asheville NC
422 Charlotte NC
424 Greensboro NC
426 Raleigh NC
428 Wilmington NC
430 Greenville SC
432 Florence SC
434 Columbia SC
436 Charleston SC
438 Atlanta GA
440 Savannah GA
442 Augusta GA
444 Albany GA
446 Macon GA
448 Pensacola FL
(448-13 WA-EA; 448-14 CR-EA; 448-15 FW-EA)
450 Panama City FL
(450-09 PC-EA; 450-10 SJ-EA; 450-11 QC-EA; 450-12 MR-EA)
452 Jacksonville FL
(452-04 CL-EA; 452-05 LO-EA)
454 Gainesville FL
(454-02 NW-EA; 454-03 OL-EA)
456 Daytona Beach FL
(456-01 PO-EA)
458 Orlando FL
(458-06 OR-EA; 458-07 LB-EA; 458-08 WI-EA)
460 southeastern FL
(460-17 GG-EA; 460-18 GR-EA)
462 Louisville KY
464 Owensboro KY
466 Winchester KY
468 Memphis TN
470 Nashville TN
472 Chattanooga TN
474 Knoxville TN
476 Birmingham AL
477 Huntsville AL
478 Montgomery AL
480 Mobile AL
482 Jackson MS (covers a portion of LA across the river from
Natchez MS)
484 Biloxi/Gulfcoast area MS
486 Shreveport LA
488 Lafayette LA
490 New Orleans LA
492 Baton Rouge LA

5NX - Southwestern Bell (27 total)
=======================

520 St.Louis MO (also includes a rather sizeable portion of
central IL independent and Ameritech central offices)
521 Westphalia MO
522 Springfield MO
524 Kansas City MO area
526 Ft.Smith AR
528 Little Rock AR
530 Pine Bluff AR
532 Witchita KS
534 Topeka KS
536 Oklahoma City OK
538 Tulsa OK
540 El Paso TX
542 Midland TX
544 Lubbock TX
546 Amarillo TX
548 Witchita Falls TX
550 Abilene TX
552 Dallas TX
554 Longview TX
556 Waco TX
558 Austin TX
560 Houston TX
562 Beaumont TX
564 Corpus Christi TX
566 San Antonio TX
568 Brownsville TX
570 Hearne TX

6NX - US West (27 total)
=============

620 Rochester MN
624 Duluth MN
626 St.Cloud MN
628 Minneapolis-St.Paul MN
630 Sioux City IA
632 Des Moines IA
634 Davenport IA
635 Cedar Rapids IA
636 Brainerd-Fargo ND (also includes large part of western MN)
638 Bismark ND
640 South Dakota
644 Omaha NE
646 Grand Island NE
648 Great Falls MT
650 Billings MT
652 Idaho (southern)
654 Wyoming
656 Denver CO
658 Colorado Springs CO
660 Utah
664 New Mexico
666 Phoenix AZ
668 Tucson AZ
670 Eugene OR
672 Portland OR
674 Seattle WA
676 Spokane WA (includes small part of central Idaho)

7NX - Pacific Telesis (12 total)
=====================

720 Reno NV
721 Pahrump NV (southern NV, including Sprint's Centel Las Vegas)
722 San Francisco CA
724 Chico CA
726 Sacramento CA
728 Fresno CA
730 Los Angeles CA
732 San Diego CA
734 Bakersfield CA
736 Monterey CA
738 Stockton CA
740 San Luis Obispo CA

8NX - "offshore & international"
================================

820 Puerto Rico (ITT)
822 US Virgin Islands (ITT)
824 Bahamas (pseudo-LATA) (C&W)
826 Jamaica (pseudo-LATA) (C&W)
828 Dominican Republic (pseudo-LATA) (GTE)
830 "other Caribbean islands" (pseudo-LATA) (C&W)
(Trinidad & Tobago, Bermuda, Cayman Is, Turks & Caicos Is,
British West Indies from British Virgin Is to Grenada
including Barbados)
832 Alaska (AT&T Alascom)
834 Hawaii (GTE)
836 Midway-Wake (CNMI?, Guam? American Samoa?) (GTE/RCA)
838 Mexico (pseudo-LATA) (Telemex/ITT)
840 "international/overseas" (pseudo-LATA)

Canadian "pseudo" LATA's
850 Bell Canada- Quebec (BCE- Bell Canada Enterprises;
also, BCE's Telebec central offices are in this "LATA")
851 Bell Canada- Ontario (BCE- Bell Canada Enterprises;
also, BCE's Northern Telephone of Ontario and the
Ontario Government/Railways owned Ontario Northland Telecomm.
central offices are in this "LATA")
881 Edmonton AB (EdTel, now part of "Telus" Corp)
882 Prince Rupert City BC (municipally owned "independent")
883 GTE's Quebec Telephone
884 Alberta (except Edmonton) (AGT is part of "Telus" Corp)
885 Newfoundland (NewTel is partially owned by BCE)
886 GTE's British Columbia Telephone Co.
887 Prince Edward Island (owned by MT&T)
888 Manitoba (MTS)
889 Nova Scotia (MT&T- Maritime Tel & Tel, partially owned by BCE)
890 New Brunswick (NBTel is partially owned by BCE)
891 Saskatchewan (Saskatel)
892 "Northwestel" (owned by BCE)
(northern BC, YT, NWT-incl.old Bell Canada in eastern/Arctic)

9NX - "independent" LATA's (continental US)
===========================================

920 Connecticut (SNET, except for NY Tel's ratecenters;
Woodbury Tel. in Woodbury CT is in this LATA)
921 Fishers Island NY (local independent telco)
922 Cincinnati Bell (OH, KY, IN)
923 Lima-Mansfield OH (two non-contiguous territories) SPRINT-United
924 Erie PA (GTE)
927 Harrisonburg VA
928 Charlottesville VA
929 Edinburg VA
930 Epps Fork VA
932 Bluefield WV
937 Richmond IN
938 Terre Haute IN
939 Ft.Myers FL (SPRINT-United)
(939-01 Avon Park EA; 939-02 Ft.Myers EA)
949 Fayetteville NC
951 Rocky Mount NC
952 Tampa FL (GTE)
953 Talahassee FL (SPRINT-Centel)
956 Bristol-Johnson City TN (SPRINT-United)
958 Lincoln NE (Lincoln Tel & Tel)
960 Coeur d'Alene ID (GTE)- north Idaho
961 San Angelo TX (GTE)
963 Kalispell MT
973 Palm Sprins CA (GTE)
974 Rochester NY (Rochester Frontier Tel)
976 Mattoon IL
977 Macomb IL
978 Olney IL
980 Navajo Communications of Arizona
981 Navajo Communications of Utah
999 (default "lata" code for NPA's 500, 800, 900, etc)

some other "major" independent telcos of the above 9NX "LATA's":
(ICTC -- Illinois Consolidated Telephone Company)
(SPRINT-United's Carolina Tel & Tel)
(GTE/Contel- formerly Contel)
(SPRINT-Centel)
(SPRINT-United's Inter-Mountain Tel. Co.)
(Citizen's Telecom- once was independent areas served by GTE)
etc.

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