Date: Thu, 15 Aug 1996 12:56:34 -0700 From: "Mark J. Cuccia" Subject: LATAs: Numbers and "Names" 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, the concept of "LATA's" might become meaningless or obsolete in the near future, But presently, LATA's still do exist. LATA's (ocal ccess ransport 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 (odification of inal 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 and even independent telco operator/toll/tandem switches and regions. (there are 164 total "Bell" Latas) Within an "independent" LATA, there can be and some do have central offices of other (usually smaller) independents. LATA's can and most 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, TN, and include central offices of Bell South as well as some small local independent telcos) Also, there are some individual LATA's which are geographically discontiguous, split into two parts by another LATA. LATA's are grouped by Regional Bell company as follows: 1NX NYNEX 2NX Bell Atlantic 3NX Ameritech 4NX Bell South 5NX Southwestern Bell 6NX US West 7NX Pacific Telesis 8NX "offshore" and "international" Alaska, Hawaii, Puerto Rico, US Virign Islands; also includes 'pseudo' LATA's for Canada, other Caribbean, etc) 9NX "independents" -- LATA's and Lata-like regions of: Cincinnati Bell, Southern New England (Bell), large "independent" telco regions 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 161 "Bell" LATA's. After further negotiations betweem AT&T and DOJ/Greene, there were changes to some of LATA boundary lines origianally drawn up. In the complete list, most "Bell" LATA's are identified by consecutive even numbers. But there are some "skipped" even numbers, as well as some "odd" numbers for the LATA code. The following summarizes which even numbers were skipped and which odd number codes were probably added: (start off with 161 "Bell" LATA's) Delete the following four: #372 (part of IL - east St.Louis area?) #622 (part of MN - Brainerd MN?) #642 (part of SD? NE?) #662 (part of UT? NM?) Add the following seven: #133 Poughkeepsie NY #325 Akron OH #477 Huntsville AL #521 Westphalia MO (was to be LATA #959 Jefferson City & Columbia MO) #570 Hearne TX (was to be an indep.LATA 9NX Bryan TX) #635 Cedar Rapids IA #721 Pahrump NV (was to be an indep.LATA 9NX Las Vegas NV) (end up with 164 "Bell" LATA's) There were also to have been some other "independent" LATA's using "9NX" codes such as: (9NX) Ashland KY (GTE) -absorbed into existing #466 Winchester KY #955 Dothan AL (GTE) -absorbed into existing #478 Montgomery AL #959 Jefferson City MO (United) & Columbia MO (GTE) -transformed into NEW #521 Westphalia MO (9NX) Bryan TX (GTE) -transformed into NEW #570 Hearne TX (9NX) Las Vegas NV (Centel) -tranformed into NEW #721 Pahrump NV 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. There were also some additional "independent" LATA's added in 1984/85. 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 the exchanges of the towns in southwestern CT handled by NYNEX- Byram and Greenwich, but not SNET's 'Old Greenwich' exchange; also includes Long Island and portions of counties just north of Bronx NYCity) 133 Poughkeepsie NY (*added to ‘original' 1982/83 scheme*) 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 (discontiguous LATA; split by LATA #932) 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 (*added to ‘original' 1982/83 sheme*) 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 (incl. part of northwest WI) 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 (skipped 372, was to be IL east of St.Louis???, now part of #520) 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 (includes GTE- Ashland KY, was to be own LATA) 468 Memphis TN 470 Nashville TN 472 Chattanooga TN 474 Knoxville TN 476 Birmingham AL 477 Huntsville AL (*added to ‘original' 1982/83 scheme*) 478 Montgomery AL (includes GTE- Dothan AL, was to be own LATA 955) 480 Mobile AL 482 Jackson MS (Incl.part of LA across the Miss.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 Ameritech and independent central offices) 521 Westphalia MO (includes United- Jefferson City MO and GTE- Columbia MO, was to be its own LATA 959) (*LATA 521 was added to original 1982/83 scheme*) 522 Springfield MO 524 Kansas City MO/KS area (northwest MO, eastern KS) 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 (incl. GTE- Bryan TX, was to be its own LATA) (*LATA 570 was added to original 1982/83 scheme*) 6NX - US West (27 total) ============= 620 Rochester MN (skipped 622, was to be Brainerd MN???, now part of #636) 624 Duluth MN 626 St.Cloud MN 628 Minneapolis-St.Paul MN 630 Sioux City IA 632 Des Moines IA 634 Davenport IA (incl. some of northwest IL indep/Ameritech) 635 Cedar Rapids IA (*added to ‘original' 1982/83 scheme*) 636 Brainerd MN / Fargo ND (northwestern MN and eastern ND) 638 Bismark ND 640 South Dakota (skipped 642, was to be somewhere in SD??? NE???) 644 Omaha NE (incl. part of southwestern IA) 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 (skipped 662 southeast UT? northwest NM? now part of Navajo's #980/981?) 664 New Mexico 666 Phoenix AZ 668 Tucson AZ 670 Eugene OR 672 Portland OR (incl.part of southwestern WA) 674 Seattle WA 676 Spokane WA (includes part of central Idaho) 7NX - Pacific Telesis (12 total) ===================== 720 Reno NV 721 Pahrump NV (southern NV, including Sprint's Centel Las Vegas, was to be own LATA) (*LATA 721 was added to original 1982/83 scheme*) 722 San Francisco CA 724 Chico CA 726 Sacramento CA 728 Fresno CA 730 Los Angeles CA (extends into ‘independent' southwestern AZ) 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/ITT) 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 (also CNMI-Guam-Am.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; this "LATA" also includes many of BCE-Telebec's local and toll switches, particularly in central/western PQ and the Iles-de-la- Madeline area in the Gulf of St.Lawrence, also Schefferville PQ on the PQ/NF(LB) border; also in this "LATA" are local central offices of a number of small indep.telcos in Quebec which home on a Bell Canada toll/tandem switch) 851 Bell Canada- Ontario (BCE- Bell Canada Enterprises; this "LATA" also includes: the ON Govt/Railways owned Ontario Northland Telecommunications local and toll office switches (which BCE-Northern Tel homes on) and BCE-Northern Telephone's local central offices, as well as the local central offices of a number of small independent telcos in Ontario which home on a Bell Canada toll/tandem switch, in particular: Thunder Bay Telecommunications and Manitoulin-Is.Tel/Amtelicom) 881 Edmonton AB (EdTel, now part of "Telus" Corp) 882 Prince Rupert City BC (municipally owned "independent") 883 GTE's Quebec Telephone (discontiguous- separated into two parts of Quebec, eastern and southern by some of Bell Canada's territory; this "LATA" also includes a number of small independent telcos in Quebec which home on a GTE-Quebec toll switch, in particular: Sogetel with about a dozen local offices in the southern PQ part of this "LATA"; BCE-Telebec's Fermont PQ local exchange on the PQ/NF(LB) border is in the eastern PQ part of this "LATA") 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 (Island Telephone, owned by MT&T of NS) 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 NWT) 9NX - "independent" LATA's (continental US) =========================================== 920 Connecticut (SNET) (two NYNEX exchanges in southwestern CT- Byram and Greenwich are NOT in this LATA- they are in NY City Metro, #132 but SNET's 'Old Greenwich' IS in this LATA; also a local independent, Woodbury (CT) Tel is in this LATA) 921 Fishers Island NY (Fishers Is Telephone Co) 922 Cincinnati OH METRO (Cincinnati Bell Telephone) (includes suburbs in OH, KY, IN; some nearby small independents are also in this LATA) 923 Lima-Mansfield OH (SPRINT-United) (discontiguous- separated into two sgmnts by LATA #324 Columbus OH, into Mansfield area in central OH and Lima area in western OH) 924 Erie PA (GTE) 927 Harrisonburg VA (GTE-Contel) 928 Charlottesville VA (SPRINT-Centel) 929 Edinburg VA (Shenandoah Telephone) 930 Epps Fork VA (SPRINT-United's Carolina Tel & Tel) 932 Bluefield WV (Citizen's Telecom, southern WV; GTE, western VA) 937 Richmond IN (GTE) (incl. part of western OH) 938 Terre Haute IN (GTE) (incl. part of eastern IL) 939 Ft.Myers FL (SPRINT-United) (939-01 Avon Park EA; 939-02 Ft.Myers EA) 949 Fayetteville NC (SPRINT-United's Carolina Tel & Tel) 951 Rocky Mount NC (SPRINT-United's Carolina Tel & Tel) 952 Tampa FL (GTE) 953 Talahassee FL (SPRINT-Centel) 956 Bristol TN/VA - Johnson City TN (SPRINT-United's Inter-Mountain Tel) (northeastern TN and extreme southwestern VA) 958 Lincoln NE (Lincoln Tel & Tel) 960 Coeur d'Alene ID (GTE)- north Idaho, parts of northeast WA 961 San Angelo TX (GTE) 963 Kalispell MT (Northwestern Telephone Co. of Montana) 973 Palm Springs CA (GTE) 974 Rochester NY (Frontier's Rochester Tel) 976 Mattoon IL (Illinois Consolidated Telephone Co) 977 Macomb/Galesburg IL (GTE) 978 Olney IL (GTE) 980 Navajo Communications of Arizona (northeastern AZ) 981 Navajo Communications of Utah (southeastern UT) 999 (default "LATA" code for NPA's 500, 800, 900, etc) MARK J. CUCCIA PHONE/WRITE/WIRE: HOME: (USA) Tel: CHestnut 1-2497 WORK: mcuccia@mailhost.tcs.tulane.edu |4710 Wright Road| (+1-504-241-2497) Tel:UNiversity 5-5954(+1-504-865-5954)|New Orleans 28 |fwds on no-answr to Fax:UNiversity 5-5917(+1-504-865-5917)|Louisiana(70128)|cellular/voicemail