Information for Area Code: 815-xxx-xxxx - IL - ILLINOIS

Phone Number Search

Reverse Phone Number Lookup:

Free Approximate Location Lookup (Map):


Resources

Information about Area Code 815

Area code 815 is a telephone area code for the northwestern corner and southern Chicago suburbs of the state of Illinois. An overlay area code 779 was implemented on March 17 of 2007. A month earlier, on February 17, 1+ten-digits were required to be dialed for all calls in and out of area code 815--in preparation for the 779 overlay.


North: 608, 262
West: 563 area code 815 East: 847/224, 630, 708
South: 309, 217

Cities in the 815/779 area code include:
Apple River, Illinois
Belvidere, Illinois
Bolingbrook, Illinois
Byron, Illinois--Prefixes include: 234 406 803
Cortland, Illinois
Cedarville, Illinois--Prefixes include: 563
Coal City, Illinois
Crystal Lake, Illinois--Prefixes include: 204 219 261 276 301 356 404 425 444 455 459 477 479 526 788 893
Davis Junction, Illinois--Prefixes include:
DeKalb, Illinois--Prefixes include: 748 753 756 758
Dixon, Illinois--Prefixes include: 285 288 284
Dwight, Illinois--Prefixes include: 584
Earlville, Illinois--Prefixes include: 246
East Dubuque, Illinois
Frankfort, Illinois--Prefixes include: 464 469 806
Freeport, Illinois--Prefixes include: 232 233 235 238 266 275 291 297 541 599 616 618 650 656 801 821 908 990
Galena, Illinois
Harvard, Illinois
Joliet, Illinois--Prefixes include: 720 725 727 729 730 741 744
Kankakee, Illinois
Lanark, Illinois--Prefixes include: 270 493 658 952
La Salle, Illinois--Prefixes include: 220 223 224
Lena, Illinois--Prefixes include: 369 809
Loves Park, Illinois
Machesney Park, Illinois
Malta, Illinois
McHenry, Illinois
Mendota, Illinois
Minooka, Illinois
Mokena, Illinois--Prefixes include: 479
Monroe Center, Illinois--Prefixes include: 393
Morris, Illinois
Mount Morris, Illinois--Prefixes include: 734
New Lenox, Illinois--Prefixes include: 485 462 463 919 212
Orangeville, Illinois--Prefixes include: 789 819
Oregon, Illinois--Prefixes include: 732
Ottawa, Illinois
Plainfield, Illinois
Princeton, Illinois--Prefixes include: 872 875 876 879
Rochelle, Illinois--Prefixes include: 561 562 888 917
Rockford, Illinois--Prefixes include: 201 202 209 218 222 226 227 229 231 242 243 262 282 289 296 298 299 315 316 319 378 381 387 391 394 395 397 398 399 470 480 484 489 490 494 505 509 516 519 520 540 543 558 601 608 621 633 636 637 639 641 654 670 681 703 708 713 720 721 742 749 763 847 860 870 871 877 904 914 921 961 962 963 964 965 966 967 968 969 971 972 977 978 979 980 983 985 986 987 988 997
Rockton, Illinois
Romeoville, Illinois
Roscoe, Illinois
Savanna, Illinois--Prefixes include: 273
Shannon, Illinois
Spring Valley, Illinois--Prefixes include: 663 664
Sterling, Illinois--Prefixes include: 380
Stillman Valley, Illinois--Prefixes include: 645
Stockton, Illinois--Prefixes include: 840 947
Streator, Illinois
Sycamore, Illinois--Prefixes include: 895 889
Tinley Park, Illinois
Warren, Illinois--Prefixes include: 745 818
Woodstock, Illinois

Flag of Illinois Illinois Area codes
217 | 224 | 309 | 312 | 618 | 630 | 708 | 773 | 779 | 815 | 847



Exchanges for Area Code 815-xxx-xxxx:

Exchange 815-200
-

Exchange 815-201
Rockford - HEARTLAND COMMUNICATIONS, INC.

Exchange 815-202
Rockford - HEARTLAND COMMUNICATIONS, INC.

Exchange 815-203
- HEARTLAND COMMUNICATIONS, INC.

Exchange 815-204
- HEARTLAND COMMUNICATIONS, INC.

Exchange 815-205
- HEARTLAND COMMUNICATIONS, INC.

Exchange 815-206
WOODSTOCK - AMERITECH ILLINOIS

Exchange 815-207
Oak Brook - AT&T LOCAL

Exchange 815-208
Dekalb -

Exchange 815-209
Rockford - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-210
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-211
-

Exchange 815-212
Chicago - T-MOBILE USA, INC.

Exchange 815-213
Sterling - UNITED STATES CELLULAR CORP.

Exchange 815-214
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-215
Chicago - GLOBALCOM, INC.-IL

Exchange 815-216
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-217
-

Exchange 815-218
Rockford - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-219
Lombard -

Exchange 815-220
LA SALLE - AMERITECH ILLINOIS

Exchange 815-221
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-222
Rockford - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-223
LA SALLE - AMERITECH ILLINOIS

Exchange 815-224
LA SALLE - AMERITECH ILLINOIS

Exchange 815-225
MILLEDGEVILLE - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-226
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-227
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-228
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-229
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-230
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-231
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-232
Freeport - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-233
Freeport - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-234
Byron - VERIZON NORTH INC.-IL

Exchange 815-235
Freeport - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-236
Schaumburg - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-237
GARDNER - AMERITECH ILLINOIS

Exchange 815-238
FREEPORT - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-239
PECATONICA - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-240
- SOURCE ONE WIRELESS

Exchange 815-241
Northbrook - AIRTOUCH PAGING - ILLINOIS

Exchange 815-242
Rockford - HEARTLAND COMMUNICATIONS, INC.

Exchange 815-243
- UNITED STATES CELLULAR CORP.

Exchange 815-244
MOUNT CARROLL - GALLATIN RIVER COMMUNICATIONS

Exchange 815-245
Schaumburg - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-246
EARLVILLE - VERIZON NORTH INC.-IL

Exchange 815-247
SEWARD - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-248
Durand - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-249
GRAND RIDGE - VERIZON NORTH INC.-IL

Exchange 815-250
-

Exchange 815-251
NELSON - GALLATIN RIVER COMMUNICATIONS

Exchange 815-252
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-253
KEMPTON - FRONTIER COMMUNICATIONS OF ILLINOIS, INC.

Exchange 815-254
PLAINFIELD - AMERITECH ILLINOIS

Exchange 815-255
- SOURCE ONE WIRELESS

Exchange 815-256
STELLE - STELLE TELEPHONE CO.

Exchange 815-257
Streator - ILLINOIS VALLEY CELLULAR RSA 2-I PARTNERSHIP

Exchange 815-258
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-259
THOMSON - GALLATIN RIVER COMMUNICATIONS

Exchange 815-260
Schaumberg - UNITED STATES CELLULAR CORP.

Exchange 815-261
Elk Grove Village - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 815-262
Rockford - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-263
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-264
WATERMAN - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-265
GILMAN - AMERITECH ILLINOIS

Exchange 815-266
Freeport - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-267
Elk Grove Village - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 815-268
ONARGA - AMERITECH ILLINOIS

Exchange 815-269
Danforth - VERIZON SOUTH INC.-IL (ALLTEL)

Exchange 815-270
-

Exchange 815-271
Elk Grove Village - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 815-272
Elk Grove Village - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 815-273
SAVANNA - GALLATIN RIVER COMMUNICATIONS

Exchange 815-274
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-275
FREEPORT - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-276
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-277
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-278
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-279
Bradley - AMERITECH MOBILE SERVICES, INC.

Exchange 815-280
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-281
- UNITED STATES CELLULAR CORP.

Exchange 815-282
LOVES PARK - AMERITECH ILLINOIS

Exchange 815-283
Joliet - A BEEP LLC

Exchange 815-284
Dixon - GALLATIN RIVER COMMUNICATIONS

Exchange 815-285
Dixon - GALLATIN RIVER COMMUNICATIONS

Exchange 815-286
Hinckley - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-287
VERONA - AMERITECH ILLINOIS

Exchange 815-288
Dixon - GALLATIN RIVER COMMUNICATIONS

Exchange 815-289
- UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-290
Chicago -

Exchange 815-291
- UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-292
BERGEN - BERGEN TELEPHONE CO. - ILLINOIS

Exchange 815-293
ROMEOVILLE - AMERITECH ILLINOIS

Exchange 815-294
- HEARTLAND COMMUNICATIONS, INC.

Exchange 815-295
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-296
Rockford - METROCALL

Exchange 815-297
Freeport - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-298
Rockford - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-299
- UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-300
Chicago - AMERITECH ILLINOIS

Exchange 815-301
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-302
Aurora - SPRINT SPECTRUM L.P.

Exchange 815-303
PRINCETON - ILLINOIS VALLEY CELLULAR RSA 2-I PARTNERSHIP

Exchange 815-304
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-305
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-306
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-307
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-308
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-309
-

Exchange 815-310
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-311
-

Exchange 815-312
-

Exchange 815-313
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-314
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-315
Rockford - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-316
Machesney Park - TDS METROCOM INC.-IL

Exchange 815-317
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-318
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-319
- UNITED STATES CELLULAR CORP.

Exchange 815-320
- HEARTLAND COMMUNICATIONS, INC.

Exchange 815-321
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-322
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-323
Rockford - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-324
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 815-325
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-326
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-327
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-328
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-329
- HEARTLAND COMMUNICATIONS, INC.

Exchange 815-330
Chicago - GLOBALCOM, INC.-IL

Exchange 815-331
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-332
CHERRY VALLEY - VERIZON NORTH INC.-IL

Exchange 815-333
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-334
WOODSTOCK - AMERITECH ILLINOIS

Exchange 815-335
Winnebago - VERIZON NORTH INC.-IL

Exchange 815-336
Coleta - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-337
WOODSTOCK - AMERITECH ILLINOIS

Exchange 815-338
WOODSTOCK - AMERITECH ILLINOIS

Exchange 815-339
Granville - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-340
-

Exchange 815-341
- AT&T WIRELESS SERVICES, INC.

Exchange 815-342
- AT&T WIRELESS SERVICES, INC.

Exchange 815-343
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-344
MC HENRY - AMERITECH ILLINOIS

Exchange 815-345
Chicago - TDS METROCOM INC.-IL

Exchange 815-346
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-347
Northbrook - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-348
- HEARTLAND COMMUNICATIONS, INC.

Exchange 815-349
Wood Dale - XO ILLINOIS, INC.

Exchange 815-350
Sterling - ESSEX TELCOM, INC.

Exchange 815-351
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-352
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-353
Northbrook - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-354
Northbrook - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-355
Northbrook - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-356
CRYSTAL LAKE - AMERITECH ILLINOIS

Exchange 815-357
SENECA - AMERITECH ILLINOIS

Exchange 815-358
CORNELL - C-R TELEPHONE CO.

Exchange 815-359
HARMON - GALLATIN RIVER COMMUNICATIONS

Exchange 815-360
- ESSEX TELCOM, INC.

Exchange 815-361
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-362
GERMAN VALLEY - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-363
MC HENRY - AMERITECH ILLINOIS

Exchange 815-364
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-365
REDDICK - VERIZON NORTH INC.-IL

Exchange 815-366
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-367
Winslow - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-368
LOSTANT - VERIZON NORTH INC.-IL

Exchange 815-369
Lena - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-370
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-371
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-372
ROMEOVILLE - AMERITECH ILLINOIS

Exchange 815-373
- SOURCE ONE WIRELESS

Exchange 815-374
- SOURCE ONE WIRELESS

Exchange 815-375
DE KALB - UNITED STATES CELLULAR CORP.

Exchange 815-376
Ohio - VERIZON NORTH INC.-IL

Exchange 815-377
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-378
Rockford - NEXTEL COMMUNICATIONS

Exchange 815-379
WALNUT - VERIZON NORTH INC.-IL

Exchange 815-380
Sterling - ESSEX TELCOM, INC.

Exchange 815-381
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-382
Schaumburg - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-383
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-384
CRESTON - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-385
MC HENRY - AMERITECH ILLINOIS

Exchange 815-386
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-387
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-388
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 815-389
BELOIT - AMERITECH ILLINOIS

Exchange 815-390
- SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-391
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-392
KINSMAN - KINSMAN MUTUAL TELEPHONE CO.

Exchange 815-393
Monroe Center - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-394
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-395
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-396
STEWARD - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-397
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-398
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-399
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-400
Dekalb - OMNIPLEX COMMUNICATIONS GROUP, LLC - IL

Exchange 815-401
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-402
DAVENPORT - SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-403
Arlington Heights - SPRINT SPECTRUM L.P.

Exchange 815-404
Arlington Heights - SPRINT SPECTRUM L.P.

Exchange 815-405
- NEXTEL COMMUNICATIONS

Exchange 815-406
Cordova - VERIZON NORTH INC.-IL

Exchange 815-407
ROMEOVILLE - AMERITECH ILLINOIS

Exchange 815-408
Chicago - GLOBALCOM, INC.-IL

Exchange 815-409
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-410
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-411
-

Exchange 815-412
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-413
Chicago - GLOBALCOM, INC.-IL

Exchange 815-414
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-415
SENECA - AMERITECH ILLINOIS

Exchange 815-416
MORRIS - AMERITECH ILLINOIS

Exchange 815-417
BRAIDWOOD - AMERITECH ILLINOIS

Exchange 815-418
Chicago - GLOBALCOM, INC.-IL

Exchange 815-419
Bloomington - AT&T LOCAL

Exchange 815-420
Sterling - ESSEX TELCOM, INC.

Exchange 815-421
HERSCHER - AMERITECH ILLINOIS

Exchange 815-422
ST ANNE - AMERITECH ILLINOIS

Exchange 815-423
ELWOOD - AMERITECH ILLINOIS

Exchange 815-424
ELWOOD - AMERITECH ILLINOIS

Exchange 815-425
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-426
HERSCHER - AMERITECH ILLINOIS

Exchange 815-427
ST ANNE - AMERITECH ILLINOIS

Exchange 815-428
MARTINTON - VERIZON NORTH INC.-IL

Exchange 815-429
SHELDON - VERIZON NORTH INC.-IL

Exchange 815-430
Chicago - GLOBALCOM, INC.-IL

Exchange 815-431
OTTAWA - AMERITECH ILLINOIS

Exchange 815-432
WATSEKA - AMERITECH ILLINOIS

Exchange 815-433
OTTAWA - AMERITECH ILLINOIS

Exchange 815-434
OTTAWA - AMERITECH ILLINOIS

Exchange 815-435
BEAVERVILLE - VERIZON NORTH INC.-IL

Exchange 815-436
PLAINFIELD - AMERITECH ILLINOIS

Exchange 815-437
PUTNAM - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-438
TAMPICO - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-439
PLAINFIELD - AMERITECH ILLINOIS

Exchange 815-440
Dixon - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-441
STERLING - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-442
TONICA - TONICA TELEPHONE CO.

Exchange 815-443
Pearl City - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-444
CRYSTAL LAKE - AMERITECH ILLINOIS

Exchange 815-445
MANLIUS - VERIZON NORTH INC.-IL

Exchange 815-446
CEDAR POINT - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-447
DEPUE - FRONTIER COMMUNICATIONS OF DEPUE, INC.

Exchange 815-448
MAZON - AMERITECH ILLINOIS

Exchange 815-449
DAKOTA - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-450
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-451
Schaumburg - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-452
Toluca - VERIZON NORTH INC.-IL

Exchange 815-453
ASHTON - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-454
Sheffield - VERIZON NORTH INC.-IL

Exchange 815-455
CRYSTAL LAKE - AMERITECH ILLINOIS

Exchange 815-456
Franklin Grove - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-457
CISSNA PARK - VERIZON SOUTH INC.-IL (ALLTEL)

Exchange 815-458
BRAIDWOOD - AMERITECH ILLINOIS

Exchange 815-459
CRYSTAL LAKE - AMERITECH ILLINOIS

Exchange 815-460
Chicago - GLOBALCOM, INC.-IL

Exchange 815-461
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-462
NEW LENOX - AMERITECH ILLINOIS

Exchange 815-463
NEW LENOX - AMERITECH ILLINOIS

Exchange 815-464
FRANKFORT - AMERITECH ILLINOIS

Exchange 815-465
GRANT PARK - AMERITECH ILLINOIS

Exchange 815-466
GRANT PARK - AMERITECH ILLINOIS

Exchange 815-467
MINOOKA - AMERITECH ILLINOIS

Exchange 815-468
MANTENO - AMERITECH ILLINOIS

Exchange 815-469
FRANKFORT - AMERITECH ILLINOIS

Exchange 815-470
Rockford - AMERITECH ILLINOIS

Exchange 815-471
MIDDLEPORT TOWNSHIP - ILLINOIS VALLEY CELLULAR RSA 2-I PARTNERSHIP

Exchange 815-472
MOMENCE - AMERITECH ILLINOIS

Exchange 815-473
WOODLAND - VERIZON SOUTH INC.-IL (ALLTEL)

Exchange 815-474
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-475
PLATTVILLE - AMERITECH ILLINOIS

Exchange 815-476
WILMINGTON - AMERITECH ILLINOIS

Exchange 815-477
CRYSTAL LAKE - AMERITECH ILLINOIS

Exchange 815-478
MANHATTAN - AMERITECH ILLINOIS

Exchange 815-479
CRYSTAL LAKE - AMERITECH ILLINOIS

Exchange 815-480
Rockford - METROCALL

Exchange 815-481
Marseilles - ILLINOIS VALLEY CELLULAR RSA 2-I PARTNERSHIP

Exchange 815-482
Crystal Lake - NEXTEL COMMUNICATIONS

Exchange 815-483
Aurora - SPRINT SPECTRUM L.P.

Exchange 815-484
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-485
NEW LENOX - AMERITECH ILLINOIS

Exchange 815-486
DONOVAN - VERIZON NORTH INC.-IL

Exchange 815-487
Chicago - GLOBALCOM, INC.-IL

Exchange 815-488
Marseilles - ILLINOIS VALLEY CELLULAR RSA 2-I PARTNERSHIP

Exchange 815-489
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-490
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-491
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 815-492
APPLE CANYON LAKE - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-493
Lanark - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-494
- UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-495
LELAND - VERIZON NORTH INC.-IL

Exchange 815-496
SHERIDAN - VERIZON NORTH INC.-IL

Exchange 815-497
Compton - VERIZON NORTH INC.-IL

Exchange 815-498
SOMONAUK - VERIZON NORTH INC.-IL

Exchange 815-499
Sterling - UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-500
-

Exchange 815-501
Cortland - SPRINT SPECTRUM L.P.

Exchange 815-502
Chicago - GLOBALCOM, INC.-IL

Exchange 815-503
Peoria - SPRINT SPECTRUM L.P.- IL

Exchange 815-504
Chicago - GLOBALCOM, INC.-IL

Exchange 815-505
Rockford - T-MOBILE USA, INC.

Exchange 815-506
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-507
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-508
Cortland - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-509
Rockford - NEXTEL COMMUNICATIONS

Exchange 815-510
- HEARTLAND COMMUNICATIONS, INC.

Exchange 815-511
-

Exchange 815-512
Chicago - GLOBALCOM, INC.-IL

Exchange 815-513
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-514
Elmhurst - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-515
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-516
Rockford - SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-517
Dekalb - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 815-518
Chicago - GLOBALCOM, INC.-IL

Exchange 815-519
Rockford - SPRINT SPECTRUM L.P.

Exchange 815-520
Rockford - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-521
MINOOKA - AMERITECH ILLINOIS

Exchange 815-522
KIRKLAND - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-523
Oak Brook - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-524
Oak Brook - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-525
Vernon Hills - TDS METROCOM INC.-IL

Exchange 815-526
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-527
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-528
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-529
Northbrook - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-530
Elmhurst - NEXTEL COMMUNICATIONS

Exchange 815-531
Oak Brook - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-532
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 815-533
La Grange - BEEPERMART, INC.

Exchange 815-534
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-535
STERLING - AMERITECH ILLINOIS

Exchange 815-536
Westchester - METROCALL

Exchange 815-537
PROPHETSTOWN - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-538
Mendota - VERIZON NORTH INC.-IL

Exchange 815-539
Mendota - VERIZON NORTH INC.-IL

Exchange 815-540
Rockford - SPRINT SPECTRUM L.P.

Exchange 815-541
- UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-542
THOMAS (BUREAU) - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-543
- UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-544
Belvidere - VERIZON NORTH INC.-IL

Exchange 815-545
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-546
- AT&T WIRELESS SERVICES, INC.

Exchange 815-547
Belvidere - VERIZON NORTH INC.-IL

Exchange 815-548
STERLING - AMERITECH ILLINOIS

Exchange 815-549
Bourbonnais - SPRINT SPECTRUM L.P.- IL

Exchange 815-550
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-551
Sterling - ESSEX TELCOM, INC.

Exchange 815-552
LOCKPORT - AMERITECH ILLINOIS

Exchange 815-553
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 815-554
DAVENPORT - SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-555
Rockford - AMERITECH ILLINOIS

Exchange 815-556
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-557
Aurora - SPRINT SPECTRUM L.P.

Exchange 815-558
- UNITED STATES CELLULAR CORP.

Exchange 815-559
Sterling - ESSEX TELCOM, INC.

Exchange 815-560
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 815-561
Rochelle - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-562
Rochelle - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-563
CEDARVILLE - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-564
STERLING - AMERITECH ILLINOIS

Exchange 815-565
- SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-566
Rockford - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-567
CAMPUS - VERIZON NORTH INC.-IL

Exchange 815-568
MARENGO - AMERITECH ILLINOIS

Exchange 815-569
CAPRON - VERIZON NORTH INC.-IL

Exchange 815-570
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-571
Dekalb -

Exchange 815-572
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-573
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-574
Sterling - ESSEX TELCOM, INC.

Exchange 815-575
Schaumburg - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-576
Sterling - ESSEX TELCOM, INC.

Exchange 815-577
PLAINFIELD - AMERITECH ILLINOIS

Exchange 815-578
MC HENRY - AMERITECH ILLINOIS

Exchange 815-579
Oak Brook - SPRINT SPECTRUM L.P.- IL

Exchange 815-580
Rockford - AT&T LOCAL

Exchange 815-581
-

Exchange 815-582
Chicago -

Exchange 815-583
Sterling - ESSEX TELCOM, INC.

Exchange 815-584
DWIGHT - AMERITECH ILLINOIS

Exchange 815-585
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-586
RANSOM - C-R TELEPHONE CO.

Exchange 815-587
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-588
LOCKPORT - AMERITECH ILLINOIS

Exchange 815-589
Fulton - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-590
Sterling - SPRINT SPECTRUM L.P.- IL

Exchange 815-591
HANOVER - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-592
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-593
Dekalb - AT&T LOCAL

Exchange 815-594
Apple River - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-595
Dekalb - AT&T LOCAL

Exchange 815-596
Chicago -

Exchange 815-597
GARDEN PRAIRIE - VERIZON NORTH INC.-IL

Exchange 815-598
MASSBACH - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-599
- VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-600
BURR RIDGE - EGIX NETWORK SERVICES, INC. - IL

Exchange 815-601
Rockford - BITWISE COMMUNICATIONS, INC. - IL

Exchange 815-602
Chicago - GLOBALCOM, INC.-IL

Exchange 815-603
Chicago - T-MOBILE USA, INC.

Exchange 815-604
Sterling - ESSEX TELCOM, INC.

Exchange 815-605
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-606
Chicago - GLOBALCOM, INC.-IL

Exchange 815-607
Bloomington - BITWISE COMMUNICATIONS, INC. - IL

Exchange 815-608
Rockford - T-MOBILE USA, INC.

Exchange 815-609
PLAINFIELD - AMERITECH ILLINOIS

Exchange 815-610
Bloomington - BITWISE COMMUNICATIONS, INC. - IL

Exchange 815-611
-

Exchange 815-612
Bloomington - BITWISE COMMUNICATIONS, INC. - IL

Exchange 815-613
Sterling - ESSEX TELCOM, INC.

Exchange 815-614
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-615
Peoria - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-616
Rockford - T-MOBILE USA, INC.

Exchange 815-617
Oak Brook - AT&T LOCAL

Exchange 815-618
-

Exchange 815-619
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-620
Sterling - ESSEX TELCOM, INC.

Exchange 815-621
Rockford - SPRINT SPECTRUM L.P.

Exchange 815-622
STERLING - AMERITECH ILLINOIS

Exchange 815-623
Roscoe - VERIZON NORTH INC.-IL

Exchange 815-624
Rockton - VERIZON NORTH INC.-IL

Exchange 815-625
STERLING - AMERITECH ILLINOIS

Exchange 815-626
STERLING - AMERITECH ILLINOIS

Exchange 815-627
PAWPAW - VERIZON NORTH INC.-IL

Exchange 815-628
WEST BROOKLYN - VERIZON NORTH INC.-IL

Exchange 815-629
SHIRLAND - VERIZON NORTH INC.-IL

Exchange 815-630
Chicago -

Exchange 815-631
STERLING - AMERITECH ILLINOIS

Exchange 815-632
STERLING - AMERITECH ILLINOIS

Exchange 815-633
LOVES PARK - AMERITECH ILLINOIS

Exchange 815-634
COAL CITY - AMERITECH ILLINOIS

Exchange 815-635
CHATSWORTH - VERIZON NORTH INC.-IL

Exchange 815-636
LOVES PARK - AMERITECH ILLINOIS

Exchange 815-637
LOVES PARK - AMERITECH ILLINOIS

Exchange 815-638
LA MOILLE - VERIZON NORTH INC.-IL

Exchange 815-639
LOVES PARK - AMERITECH ILLINOIS

Exchange 815-640
Lisle - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-641
-

Exchange 815-642
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-643
DOVER - VERIZON NORTH INC.-IL

Exchange 815-644
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-645
Stillman Valley - VERIZON NORTH INC.-IL

Exchange 815-646
TISKILWA - VERIZON NORTH INC.-IL

Exchange 815-647
Bloomington - SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-648
Hebron - VERIZON NORTH INC.-IL

Exchange 815-649
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-650
FREEPORT - AT&T LOCAL

Exchange 815-651
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-652
GRAND DETOUR - GALLATIN RIVER COMMUNICATIONS

Exchange 815-653
WONDER LAKE - VERIZON NORTH INC.-IL

Exchange 815-654
LOVES PARK - AMERITECH ILLINOIS

Exchange 815-655
Sterling - ESSEX TELCOM, INC.

Exchange 815-656
Rockford - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-657
FORREST - AMERITECH ILLINOIS

Exchange 815-658
Sterling - ESSEX TELCOM, INC.

Exchange 815-659
BUREAU - VERIZON NORTH INC.-IL

Exchange 815-660
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-661
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-662
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-663
Spring Valley - VERIZON NORTH INC.-IL

Exchange 815-664
Spring Valley - VERIZON NORTH INC.-IL

Exchange 815-665
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-666
Hickory Hills -

Exchange 815-667
UTICA - AMERITECH ILLINOIS

Exchange 815-668
Joliet - AMERITECH MOBILE SERVICES, INC.

Exchange 815-669
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-670
Rockford - SPRINT SPECTRUM L.P.

Exchange 815-671
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-672
Streator - VERIZON NORTH INC.-IL

Exchange 815-673
Streator - VERIZON NORTH INC.-IL

Exchange 815-674
STREATOR - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-675
Spring Grove - VERIZON NORTH INC.-IL

Exchange 815-676
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-677
Dixon - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-678
RICHMOND - VERIZON NORTH INC.-IL

Exchange 815-679
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-680
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-681
- HEARTLAND COMMUNICATIONS, INC.

Exchange 815-682
STOCKLAND - VERIZON SOUTH INC.-IL (ALLTEL)

Exchange 815-683
CRESCENT CITY - AMERITECH ILLINOIS

Exchange 815-684
Chadwick - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-685
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-686
PIPER CITY - VERIZON NORTH INC.-IL

Exchange 815-687
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-688
Strawn - VERIZON NORTH INC.-IL

Exchange 815-689
CULLOM - FRONTIER COMMUNICATIONS OF ILLINOIS, INC.

Exchange 815-690
Schaumberg - UNITED STATES CELLULAR CORP.

Exchange 815-691
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-692
Fairbury - VERIZON NORTH INC.-IL

Exchange 815-693
Elmhurst - NEXTEL COMMUNICATIONS

Exchange 815-694
CLIFTON - VERIZON NORTH INC.-IL

Exchange 815-695
NEWARK - AMERITECH ILLINOIS

Exchange 815-696
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-697
CHEBANSE - VERIZON NORTH INC.-IL

Exchange 815-698
ASHKUM - VERIZON NORTH INC.-IL

Exchange 815-699
WYANET - VERIZON NORTH INC.-IL

Exchange 815-700
-

Exchange 815-701
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-702
- SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-703
Rockford - NEXTEL COMMUNICATIONS

Exchange 815-704
Madison - MCLEODUSA TELECOMMUNICATIONS SERVICES, INC.- IL

Exchange 815-705
Lisle - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-706
Sterling - ESSEX TELCOM, INC.

Exchange 815-707
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-708
-

Exchange 815-709
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-710
Oak Brook - AT&T LOCAL

Exchange 815-711
-

Exchange 815-712
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 815-713
- KMC TELECOM V, INC. - IL

Exchange 815-714
Chicago - SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-715
- AT&T WIRELESS SERVICES, INC.

Exchange 815-716
DE KALB - NEXTEL PARTNERS OPERATING CORP.

Exchange 815-717
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-718
Sterling - UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-719
Princeton - NEXTEL COMMUNICATIONS

Exchange 815-720
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-721
Rockford - AT&T LOCAL

Exchange 815-722
JOLIET - AMERITECH ILLINOIS

Exchange 815-723
JOLIET - AMERITECH ILLINOIS

Exchange 815-724
JOLIET - AMERITECH ILLINOIS

Exchange 815-725
JOLIET - AMERITECH ILLINOIS

Exchange 815-726
JOLIET - AMERITECH ILLINOIS

Exchange 815-727
JOLIET - AMERITECH ILLINOIS

Exchange 815-728
WONDER LAKE - VERIZON NORTH INC.-IL

Exchange 815-729
JOLIET - AMERITECH ILLINOIS

Exchange 815-730
JOLIET - AMERITECH ILLINOIS

Exchange 815-731
PLAINFIELD -

Exchange 815-732
Oregon - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-733
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-734
Mount Morris - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-735
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-736
LISBON - AMERITECH ILLINOIS

Exchange 815-737
Sharon - SHARON TELEPHONE CO. - ILLINOIS

Exchange 815-738
LEAF RIVER - LEAF RIVER TELEPHONE CO.

Exchange 815-739
DE KALB - NEXTEL COMMUNICATIONS

Exchange 815-740
JOLIET - AMERITECH ILLINOIS

Exchange 815-741
JOLIET - AMERITECH ILLINOIS

Exchange 815-742
- UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-743
GRAYMONT - FRONTIER COMMUNICATIONS OF PRAIRIE, INC.

Exchange 815-744
JOLIET - AMERITECH ILLINOIS

Exchange 815-745
WARREN - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-747
East Dubuque - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-748
Dekalb - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-749
Rockford - ANSWER AMERICA DBA ANSWER USA

Exchange 815-750
Marseilles - MARSEILLES TELEPHONE CO. OF MARSEILLES

Exchange 815-751
Dekalb - CONTEL CELLULAR, INC.

Exchange 815-752
Dekalb - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-753
Dekalb - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-754
Dekalb - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-755
- AMERITECH MOBILE SERVICES, INC.

Exchange 815-756
Dekalb - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-757
Dekalb - UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-758
Dekalb - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-759
MC HENRY - AMERITECH ILLINOIS

Exchange 815-760
-

Exchange 815-761
Dekalb - CONTEL CELLULAR, INC.

Exchange 815-762
Dekalb - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-763
Rockford - ANSWER AMERICA DBA ANSWER USA

Exchange 815-764
Dekalb - UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-765
POPLAR GROVE - VERIZON NORTH INC.-IL

Exchange 815-766
Dekalb - UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-767
BURR RIDGE - AMERITECH MOBILE SERVICES, INC.

Exchange 815-768
- AMERITECH ILLINOIS

Exchange 815-769
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-770
-

Exchange 815-771
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-772
MORRISON - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-773
JOLIET - AMERITECH ILLINOIS

Exchange 815-774
JOLIET - AMERITECH ILLINOIS

Exchange 815-775
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 815-776
Galena - AMERITECH ILLINOIS

Exchange 815-777
Galena - AMERITECH ILLINOIS

Exchange 815-778
LYNDON - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-780
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-781
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-782
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-783
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-784
Genoa - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-785
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 815-786
Sandwich - VERIZON NORTH INC.-IL

Exchange 815-787
Dekalb - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-788
CRYSTAL LAKE - AMERITECH ILLINOIS

Exchange 815-789
Orangeville - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-790
Crystal Lake - NEXTEL COMMUNICATIONS

Exchange 815-791
Elmhurst - NEXTEL COMMUNICATIONS

Exchange 815-792
HARDING - AMERITECH ILLINOIS

Exchange 815-793
Dekalb - T-MOBILE USA, INC.

Exchange 815-794
Marseilles - MARSEILLES TELEPHONE CO. OF MARSEILLES

Exchange 815-795
Marseilles - MARSEILLES TELEPHONE CO. OF MARSEILLES

Exchange 815-796
FLANAGAN - FRONTIER COMMUNICATIONS OF PRAIRIE, INC.

Exchange 815-797
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-798
Sterling - ESSEX TELCOM, INC.

Exchange 815-799
Peoria - SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-801
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-802
KANKAKEE - AMERITECH ILLINOIS

Exchange 815-803
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-804
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-805
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-806
- AMERITECH ILLINOIS

Exchange 815-807
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-808
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-809
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-810
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-811
-

Exchange 815-812
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-813
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-814
Chicago - T-MOBILE USA, INC.

Exchange 815-816
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-817
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-818
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-819
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-820
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-821
- KMC TELECOM V, INC. - IL

Exchange 815-822
STREATOR - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-823
Wood Dale - XO ILLINOIS, INC.

Exchange 815-824
SHABBONA - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-825
MALTA - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-826
- CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-827
MAPLE PARK - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-828
Wood Dale - XO ILLINOIS, INC.

Exchange 815-829
Sterling - ESSEX TELCOM, INC.

Exchange 815-830
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-831
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-832
SAUNEMIN - FRONTIER COMMUNICATIONS OF ILLINOIS, INC.

Exchange 815-833
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-834
LOCKPORT - AMERITECH ILLINOIS

Exchange 815-835
Sterling - ESSEX TELCOM, INC.

Exchange 815-836
LOCKPORT - AMERITECH ILLINOIS

Exchange 815-837
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-838
LOCKPORT - AMERITECH ILLINOIS

Exchange 815-839
Wood Dale - XO ILLINOIS, INC.

Exchange 815-840
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-841
Sterling - ESSEX TELCOM, INC.

Exchange 815-842
Pontiac - VERIZON NORTH INC.-IL

Exchange 815-843
Sterling - ESSEX TELCOM, INC.

Exchange 815-844
Pontiac - VERIZON NORTH INC.-IL

Exchange 815-845
Scales Mound - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-846
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-847
Rockford - SBC IP COMMUNICATIONS, INC.

Exchange 815-848
PONTIAC - ILLINOIS VALLEY CELLULAR RSA 2-I PARTNERSHIP

Exchange 815-849
SUBLETTE - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-850
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-851
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 815-852
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-853
Wenona - VERIZON NORTH INC.-IL

Exchange 815-854
LONG POINT - VERIZON NORTH INC.-IL

Exchange 815-855
Dekalb -

Exchange 815-856
LEONORE - LEONORE MUTUAL TELEPHONE CO.

Exchange 815-857
Amboy - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-858
Elizabeth - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-859
Sterling - ESSEX TELCOM, INC.

Exchange 815-860
- SOURCE ONE WIRELESS

Exchange 815-861
Schaumburg - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-862
Dekalb - HEARTLAND COMMUNICATIONS, INC.

Exchange 815-863
RUTLAND - VERIZON NORTH INC.-IL

Exchange 815-864
Shannon - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-865
DAVIS - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-866
PRINCETON - ILLINOIS VALLEY CELLULAR RSA 2-I PARTNERSHIP

Exchange 815-867
Bloomington - NEXTEL PARTNERS OPERATING CORP.

Exchange 815-868
MCCONNELL - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-869
MAGNOLIA - VERIZON NORTH INC.-IL

Exchange 815-870
Rockford - HEARTLAND COMMUNICATIONS, INC.

Exchange 815-871
- UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-872
Princeton - VERIZON NORTH INC.-IL

Exchange 815-873
Rockford - VERIZON NORTH INC.-IL

Exchange 815-874
Rockford - VERIZON NORTH INC.-IL

Exchange 815-875
Princeton - VERIZON NORTH INC.-IL

Exchange 815-876
Princeton - VERIZON NORTH INC.-IL

Exchange 815-877
LOVES PARK - AMERITECH ILLINOIS

Exchange 815-878
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-879
Princeton - VERIZON NORTH INC.-IL

Exchange 815-880
Wood Dale - XO ILLINOIS, INC.

Exchange 815-881
Sterling - ESSEX TELCOM, INC.

Exchange 815-882
MCNABB - MCNABB TELEPHONE CO.

Exchange 815-883
OGLESBY - AMERITECH ILLINOIS

Exchange 815-884
HARVARD - AMERITECH ILLINOIS

Exchange 815-885
ROCKCUT - VERIZON NORTH INC.-IL

Exchange 815-886
ROMEOVILLE - AMERITECH ILLINOIS

Exchange 815-887
Rolling Meadows - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 815-888
-

Exchange 815-889
Milford - VERIZON SOUTH INC.-IL (ALLTEL)

Exchange 815-890
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-891
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-892
Sterling - ESSEX TELCOM, INC.

Exchange 815-893
- COMCAST PHONE OF ILLINOIS, LLC - IL

Exchange 815-894
LADD - VERIZON NORTH INC.-IL

Exchange 815-895
Sycamore - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-896
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-897
Dekalb -

Exchange 815-898
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-899
Sycamore - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-900
-

Exchange 815-901
Dekalb - COMCAST PHONE OF ILLINOIS, LLC - IL

Exchange 815-902
Dekalb - SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-903
BURR RIDGE - AMERITECH MOBILE SERVICES, INC.

Exchange 815-904
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-905
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-906
Dekalb -

Exchange 815-907
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-908
- SPRINT SPECTRUM L.P.

Exchange 815-909
Dekalb - SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-910
MENDOTA - ILLINOIS VALLEY CELLULAR RSA 2-I PARTNERSHIP

Exchange 815-911
-

Exchange 815-912
Freeport - AERO COMMUNICATIONS, INC. - IL

Exchange 815-913
- FORTE COMMUNICATIONS, INC. - IL

Exchange 815-914
Rockford - SPRINT SPECTRUM L.P.

Exchange 815-915
Peoria - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-916
Elmhurst - NEXTEL COMMUNICATIONS

Exchange 815-917
Sterling - ESSEX TELCOM, INC.

Exchange 815-918
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-919
Chicago - T-MOBILE USA, INC.

Exchange 815-920
Bloomington -

Exchange 815-921
LOVES PARK - AMERITECH ILLINOIS

Exchange 815-922
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-923
UNION - AMERITECH ILLINOIS

Exchange 815-924
Sterling - ESSEX TELCOM, INC.

Exchange 815-925
HENNEPIN - VERIZON NORTH INC.-IL

Exchange 815-926
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-927
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 815-928
KANKAKEE - AMERITECH ILLINOIS

Exchange 815-929
KANKAKEE - AMERITECH ILLINOIS

Exchange 815-930
Freeport - SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-931
BURR RIDGE - SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 815-932
KANKAKEE - AMERITECH ILLINOIS

Exchange 815-933
KANKAKEE - AMERITECH ILLINOIS

Exchange 815-934
EMINGTON - VERIZON NORTH INC.-IL

Exchange 815-935
KANKAKEE - AMERITECH ILLINOIS

Exchange 815-936
KANKAKEE - AMERITECH ILLINOIS

Exchange 815-937
KANKAKEE - AMERITECH ILLINOIS

Exchange 815-938
Forreston - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-939
KANKAKEE - AMERITECH ILLINOIS

Exchange 815-940
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-941
MORRIS - AMERITECH ILLINOIS

Exchange 815-942
MORRIS - AMERITECH ILLINOIS

Exchange 815-943
HARVARD - AMERITECH ILLINOIS

Exchange 815-944
HOPKINS PARK - AMERITECH ILLINOIS

Exchange 815-945
CHENOA - VERIZON NORTH INC.-IL

Exchange 815-946
Polo - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-947
Stockton - VERIZON NORTH INC.-IL (CONTEL)

Exchange 815-948
HOOPPOLE - CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL

Exchange 815-949
CABERY - VERIZON NORTH INC.-IL

Exchange 815-950
-

Exchange 815-951
Sterling - ESSEX TELCOM, INC.

Exchange 815-952
- SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-953
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-954
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-955
Elmhurst - NEXTEL COMMUNICATIONS

Exchange 815-956
Dekalb -

Exchange 815-957
Rockford - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-958
-

Exchange 815-959
-

Exchange 815-960
Dekalb - NORTH COUNTY COMMUNICATIONS CORP. - CA

Exchange 815-961
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-962
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-963
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-964
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-965
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-966
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-967
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-968
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-969
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-970
DE KALB - NEXTEL COMMUNICATIONS

Exchange 815-971
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-972
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-973
- UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-974
Sterling - ESSEX TELCOM, INC.

Exchange 815-975
- AT&T WIRELESS SERVICES, INC.

Exchange 815-976
-

Exchange 815-977
Rockford - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 815-978
Rockford - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-979
Rockford - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-980
Rockford -

Exchange 815-981
Dekalb - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 815-982
Sterling - ESSEX TELCOM, INC.

Exchange 815-983
Rockford - AMERITECH MOBILE SERVICES, INC.

Exchange 815-984
WELLINGTON - VERIZON SOUTH INC.-IL (ALLTEL)

Exchange 815-985
Rockford - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-986
Machesney Park - US XCHANGE OF ILLINOIS LLC DBA CHOICE ONE COMM IL

Exchange 815-987
ROCKFORD - AMERITECH ILLINOIS

Exchange 815-988
- UNITED STATES CELLULAR CORP. - ILLINOIS

Exchange 815-989
Dekalb - SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 815-990
FREEPORT - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 815-991
Sterling - ESSEX TELCOM, INC.

Exchange 815-992
- NEXTEL COMMUNICATIONS

Exchange 815-993
BURR RIDGE -

Exchange 815-994
DE KALB - NEXTEL COMMUNICATIONS

Exchange 815-995
-

Exchange 815-996
-

Exchange 815-997
Rockford - MCLEODUSA TELECOMMUNICATIONS SERVICES, INC.- IL

Exchange 815-998
ODELL - VERIZON NORTH INC.-IL

Exchange 815-999
Schaumberg - UNITED STATES CELLULAR CORP.