Area Code 815 phone numbers
State: Illinois
In service since: 1947
Landlines: 619
Wireless prefixes: 166
Carriers: 59
Counties: 31
ZIP codes: 214
Major cities: Rockford, Chicago, Arlington Heights, Freeport, DeKalb
Area Code 815 has 776 prefixes
| Prefix | County | City | Carrier |
|---|---|---|---|
| 1-815-200 | Cook | Chicago | Paetec Communications, Inc. - Il |
| 1-815-201 | Cook | Chicago | Bandwidth.com Clec, Llc - Il |
| 1-815-202 | Cook | Hickory Hills | New Cingular Wireless Pcs, Llc - Il |
| 1-815-203 | DuPage | Naperville | Usa Mobility Wireless, Inc. |
| 1-815-204 | DuPage | Naperville | Usa Mobility Wireless, Inc. |
| 1-815-205 | Cook | Chicago | Centurylink Communications Llc |
| 1-815-206 | McHenry | Woodstock | Ameritech Illinois |
| 1-815-207 | Cook | Hickory Hills | At&t Local |
| 1-815-208 | Lee | Dixon | Mediacom Telephony Of Illinois, Llc - Il |
| 1-815-209 | Winnebago | Rockford | Level 3 Communications, Llc - Il |
| 1-815-210 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-212 | Kane | Elgin | T-mobile Usa, Inc. |
| 1-815-213 | Whiteside | Sterling | United States Cellular Corp. - Illinois |
| 1-815-214 | Cook | Arlington Heights | Rcn Telecom Services Of Illinois, Inc. - Il |
| 1-815-215 | Cook | Chicago | First Communications Llc - Il |
| 1-815-216 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-217 | Cook | Chicago | Digital Network Access Communications, Inc. - Il |
| 1-815-218 | Winnebago | Rockford | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-219 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| 1-815-220 | La Salle | La Salle | Ameritech Illinois |
| 1-815-221 | Cook | Chicago | Teleport Communications America, Llc - Il |
| 1-815-222 | Winnebago | Rockford | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-223 | La Salle | La Salle | Ameritech Illinois |
| 1-815-224 | La Salle | La Salle | Ameritech Illinois |
| 1-815-225 | Carroll | Milledgeville | Citizens Telecom Co Illinois-frontier Citizens -il |
| 1-815-226 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-227 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-228 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-229 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-230 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-231 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-232 | Stephenson | Freeport | Frontier North, Inc. - Il |
| 1-815-233 | Stephenson | Freeport | Frontier North, Inc. - Il |
| 1-815-234 | Ogle | Byron | Frontier North, Inc. - Il |
| 1-815-235 | Stephenson | Freeport | Frontier North, Inc. - Il |
| 1-815-236 | Cook | Schaumburg | New Cingular Wireless Pcs, Llc - Il |
| 1-815-237 | Grundy | Gardner | Ameritech Illinois |
| 1-815-238 | Stephenson | Freeport | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-239 | Winnebago | Pecatonica | Frontier North, Inc. - Il |
| 1-815-240 | Winnebago | Rockford | Charter Fiberlink - Illinois, Llc - Il |
| 1-815-241 | Cook | Chicago | American Messaging Services, Llc |
| 1-815-242 | Cook | Chicago | Bandwidth.com Clec, Llc - Il |
| 1-815-243 | Winnebago | Rockford | United States Cellular Corp. - Illinois |
| 1-815-244 | Carroll | Mount Carroll | Gallatin River Communications Dba Centurylink |
| 1-815-245 | Cook | Schaumburg | New Cingular Wireless Pcs, Llc - Il |
| 1-815-246 | La Salle | Earlville | Frontier North, Inc. - Il |
| 1-815-247 | Winnebago | Pecatonica | Frontier North, Inc. - Il |
| 1-815-248 | Winnebago | Durand | Frontier North, Inc. - Il |
| 1-815-249 | La Salle | Grand Ridge | Frontier North, Inc. - Il |
| 1-815-250 | Cook | Arlington Heights | Comcast Phone Of Illinois, Llc Dba Comco - Il |
| 1-815-251 | Lee | Dixon | Gallatin River Communications Dba Centurylink |
| 1-815-252 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-253 | Ford | Kempton | Frontier Communications Of Illinois, Inc. |
| 1-815-254 | Will | Plainfield | Ameritech Illinois |
| 1-815-255 | Cook | Chicago | Us Xchange Of Illinois Llc Dba Choice One Comm Il |
| 1-815-256 | Kankakee | Cabery | Stelle Telephone Co. |
| 1-815-257 | La Salle | Streator | Illinois Valley Cellular Rsa 2-ii Partnership |
| 1-815-258 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-259 | Carroll | Thomson | Gallatin River Communications Dba Centurylink |
| 1-815-260 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| 1-815-261 | Cook | Arlington Heights | Mci Worldcom Communications, Inc. - Il |
| 1-815-262 | Winnebago | Rockford | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-263 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-264 | DeKalb | Waterman | Frontier North, Inc. - Il |
| 1-815-265 | Iroquois | Gilman | Ameritech Illinois |
| 1-815-266 | Stephenson | Freeport | Frontier North, Inc. - Il |
| 1-815-267 | Will | Plainfield | Mci Worldcom Communications, Inc. - Il |
| 1-815-268 | Iroquois | Onarga | Ameritech Illinois |
| 1-815-269 | Cook | Chicago | Frontier Communications Of The Carolinas, Inc - Il |
| 1-815-270 | Winnebago | Rockford | Charter Fiberlink - Illinois, Llc - Il |
| 1-815-271 | Cook | Elk Grove Village | Mci Worldcom Communications, Inc. - Il |
| 1-815-272 | Kane | Elgin | Mci Worldcom Communications, Inc. - Il |
| 1-815-273 | Carroll | Savanna | Gallatin River Communications Dba Centurylink |
| 1-815-274 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-275 | Stephenson | Freeport | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-276 | Cook | Arlington Heights | Teleport Communications America, Llc - Il |
| 1-815-277 | Cook | Chicago | Teleport Communications America, Llc - Il |
| 1-815-278 | Cook | Arlington Heights | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-279 | Cook | Chicago | American Messaging Services, Llc |
| 1-815-280 | Cook | Chicago | Teleport Communications America, Llc - Il |
| 1-815-281 | Whiteside | Erie | United States Cellular Corp. - Illinois |
| 1-815-282 | Winnebago | Loves Park | Ameritech Illinois |
| 1-815-283 | DeKalb | DeKalb | Mediacom Telephony Of Illinois, Llc - Il |
| 1-815-284 | Lee | Dixon | Gallatin River Communications Dba Centurylink |
| 1-815-285 | Lee | Dixon | Gallatin River Communications Dba Centurylink |
| 1-815-286 | DeKalb | Hinckley | Frontier North, Inc. - Il |
| 1-815-287 | Cook | Chicago | Ameritech Illinois |
| 1-815-288 | Lee | Dixon | Gallatin River Communications Dba Centurylink |
| 1-815-289 | Winnebago | Rockford | United States Cellular Corp. - Illinois |
| 1-815-290 | Cook | Chicago | At&t Corp. |
| 1-815-291 | Winnebago | Rockford | United States Cellular Corp. - Illinois |
| 1-815-292 | Rock | Clinton | Bergen Telephone Co. - Illinois |
| 1-815-293 | Will | Lockport | Ameritech Illinois |
| 1-815-294 | DuPage | Naperville | Usa Mobility Wireless, Inc. |
| 1-815-295 | Kane | Elgin | T-mobile Usa, Inc. |
| 1-815-296 | Winnebago | Rockford | Usa Mobility Wireless, Inc. |
| 1-815-297 | Stephenson | Freeport | Frontier North, Inc. - Il |
| 1-815-298 | Winnebago | Rockford | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-299 | Winnebago | Rockford | United States Cellular Corp. - Illinois |
| 1-815-300 | Will | New Lenox | Ameritech Illinois |
| 1-815-301 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-302 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| 1-815-303 | Bureau | Princeton | Illinois Valley Cellular Rsa 2-i Partnership |
| 1-815-304 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-305 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-306 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-307 | Cook | Schaumburg | Broadwing Communications, Llc - Il |
| 1-815-308 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-309 | Carroll | Shannon | Aero North Communications, Inc. - Il |
| 1-815-310 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-312 | Winnebago | Rockford | Ymax Communications Corp. - Il |
| 1-815-313 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-314 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-315 | Winnebago | Rockford | Level 3 Communications, Llc - Il |
| 1-815-316 | Winnebago | Machesney Park | Tds Metrocom Inc.-il |
| 1-815-317 | Cook | Chicago | Broadwing Communications, Llc - Il |
| 1-815-318 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-319 | Winnebago | Rockford | United States Cellular Corp. - Illinois |
| 1-815-320 | Cook | Chicago | Peerless Network Of Illinois, Llc - Il |
| 1-815-321 | Cook | Chicago | Xo Illinois, Inc. |
| 1-815-322 | Cook | Chicago | Level 3 Communications, Llc - Il |
| 1-815-323 | Winnebago | Rockford | Level 3 Communications, Llc - Il |
| 1-815-324 | Cook | Chicago | Mediacom Telephony Of Illinois, Llc - Il |
| 1-815-325 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-326 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-327 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-328 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-329 | Winnebago | Rockford | At&t Corp. |
| 1-815-330 | Cook | Chicago | First Communications Llc - Il |
| 1-815-331 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-332 | Winnebago | Rockford | Frontier North, Inc. - Il |
| 1-815-333 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-334 | McHenry | Woodstock | Ameritech Illinois |
| 1-815-335 | Winnebago | Winnebago | Frontier North, Inc. - Il |
| 1-815-336 | Whiteside | Sterling | Citizens Telecom Co Illinois-frontier Citizens -il |
| 1-815-337 | McHenry | Woodstock | Ameritech Illinois |
| 1-815-338 | McHenry | Woodstock | Ameritech Illinois |
| 1-815-339 | Putnam | Granville | Frontier North, Inc. - Il |
| 1-815-340 | Peoria | Peoria | Comcast Phone Of Illinois, Llc Dba Comco - Il |
| 1-815-341 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-342 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-343 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-344 | McHenry | McHenry | Ameritech Illinois |
| 1-815-345 | Kane | Elgin | Level 3 Communications, Llc - Il |
| 1-815-346 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-347 | Kane | Elgin | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-348 | Cook | Chicago | Us Xchange Of Illinois Llc Dba Choice One Comm Il |
| 1-815-349 | DuPage | Oak Brook | Xo Illinois, Inc. |
| 1-815-350 | Carroll | Shannon | Essex Telcom, Inc. |
| 1-815-351 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-352 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-353 | Kane | Elgin | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-354 | Kane | Elgin | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-355 | Kane | Elgin | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-356 | McHenry | Crystal Lake | Ameritech Illinois |
| 1-815-357 | La Salle | Seneca | Ameritech Illinois |
| 1-815-358 | Livingston | Cornell | C-r Telephone Co. |
| 1-815-359 | Lee | Harmon | Gallatin River Communications Dba Centurylink |
| 1-815-360 | Carroll | Shannon | Essex Telcom, Inc. |
| 1-815-361 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-362 | Stephenson | German Valley | Frontier North, Inc. - Il |
| 1-815-363 | McHenry | McHenry | Ameritech Illinois |
| 1-815-364 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-365 | Kankakee | Reddick | Frontier North, Inc. - Il |
| 1-815-366 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-367 | Stephenson | Winslow | Frontier North, Inc. - Il |
| 1-815-368 | La Salle | Lostant | Frontier North, Inc. - Il |
| 1-815-369 | Stephenson | Lena | Frontier North, Inc. - Il |
| 1-815-370 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-371 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-372 | Will | Lockport | Ameritech Illinois |
| 1-815-373 | Cook | Chicago | Us Xchange Of Illinois Llc Dba Choice One Comm Il |
| 1-815-374 | Cook | Chicago | Us Xchange Of Illinois Llc Dba Choice One Comm Il |
| 1-815-375 | DeKalb | DeKalb | United States Cellular Corp. - Illinois |
| 1-815-376 | Bureau | Ohio | Frontier North, Inc. - Il |
| 1-815-377 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-378 | Winnebago | Rockford | Sprint Spectrum L.p. |
| 1-815-379 | Bureau | Walnut | Frontier North, Inc. - Il |
| 1-815-380 | DeKalb | DeKalb | Essex Telcom, Inc. |
| 1-815-381 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-382 | Cook | Schaumburg | New Cingular Wireless Pcs, Llc - Il |
| 1-815-383 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-384 | Ogle | Rochelle | Frontier North, Inc. - Il |
| 1-815-385 | McHenry | McHenry | Ameritech Illinois |
| 1-815-386 | Cook | Arlington Heights | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-387 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-388 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| 1-815-389 | Rock | Beloit | Ameritech Illinois |
| 1-815-390 | Cook | Chicago | Comcast Phone Of Illinois, Llc Dba Comco - Il |
| 1-815-391 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-392 | Grundy | Kinsman | Kinsman Mutual Telephone Company |
| 1-815-393 | Ogle | Monroe Center | Frontier North, Inc. - Il |
| 1-815-394 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-395 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-396 | Lee | Steward | Frontier North, Inc. - Il |
| 1-815-397 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-398 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-399 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-400 | Lee | Dixon | Mediacom Telephony Of Illinois, Llc - Il |
| 1-815-401 | Cook | Chicago | Level 3 Communications, Llc - Il |
| 1-815-402 | Rock Island | Rock Island | Level 3 Communications, Llc - Il |
| 1-815-403 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| 1-815-404 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| 1-815-405 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| 1-815-406 | Ogle | Byron | Frontier North, Inc. - Il |
| 1-815-407 | Will | Lockport | Ameritech Illinois |
| 1-815-408 | Cook | Chicago | First Communications Llc - Il |
| 1-815-409 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-410 | Cook | Chicago | Level 3 Communications, Llc - Il |
| 1-815-412 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-413 | Cook | Chicago | First Communications Llc - Il |
| 1-815-414 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-415 | La Salle | Seneca | Ameritech Illinois |
| 1-815-416 | Grundy | Morris | Ameritech Illinois |
| 1-815-417 | Will | Braidwood | Ameritech Illinois |
| 1-815-418 | Cook | Chicago | First Communications Llc - Il |
| 1-815-419 | McLean | Bloomington | At&t Local |
| 1-815-420 | Winnebago | Rockford | Essex Telcom, Inc. |
| 1-815-421 | Cook | Chicago | Ameritech Illinois |
| 1-815-422 | Cook | Chicago | Ameritech Illinois |
| 1-815-423 | Will | Elwood | Ameritech Illinois |
| 1-815-424 | Will | Elwood | Ameritech Illinois |
| 1-815-425 | Cook | Arlington Heights | Broadwing Communications, Llc - Il |
| 1-815-426 | Kankakee | Herscher | Ameritech Illinois |
| 1-815-427 | Kankakee | Saint Anne | Ameritech Illinois |
| 1-815-428 | Cook | Chicago | Frontier North, Inc. - Il |
| 1-815-429 | Iroquois | Sheldon | Frontier North, Inc. - Il |
| 1-815-430 | Cook | Chicago | First Communications Llc - Il |
| 1-815-431 | La Salle | Ottawa | Ameritech Illinois |
| 1-815-432 | Iroquois | Watseka | Ameritech Illinois |
| 1-815-433 | La Salle | Ottawa | Ameritech Illinois |
| 1-815-434 | La Salle | Ottawa | Ameritech Illinois |
| 1-815-435 | Iroquois | Beaverville | Frontier North, Inc. - Il |
| 1-815-436 | Will | Plainfield | Ameritech Illinois |
| 1-815-437 | Putnam | Putnam | Frontier North, Inc. - Il |
| 1-815-438 | Whiteside | Tampico | Citizens Telecom Co Illinois-frontier Citizens -il |
| 1-815-439 | Will | Plainfield | Ameritech Illinois |
| 1-815-440 | Lee | Dixon | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-441 | Whiteside | Sterling | Cellco Partnership Dba Verizon Wireless - Il |
| 1-815-442 | La Salle | Tonica | Tonica Telephone Co. |
| 1-815-443 | Stephenson | Pearl City | Frontier North, Inc. - Il |
| 1-815-444 | McHenry | Crystal Lake | Ameritech Illinois |
| 1-815-445 | Bureau | Manlius | Frontier North, Inc. - Il |
| 1-815-446 | La Salle | Tonica | Frontier North, Inc. - Il |
| 1-815-447 | Bureau | Depue | Frontier Communications Of Depue, Inc. |
| 1-815-448 | Grundy | Mazon | Ameritech Illinois |
| 1-815-449 | Stephenson | Dakota | Frontier North, Inc. - Il |
| 1-815-450 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-451 | Cook | Schaumburg | New Cingular Wireless Pcs, Llc - Il |
| 1-815-452 | Marshall | Toluca | Frontier North, Inc. - Il |
| 1-815-453 | Lee | Ashton | Frontier North, Inc. - Il |
| 1-815-454 | Bureau | Sheffield | Frontier North, Inc. - Il |
| 1-815-455 | McHenry | Crystal Lake | Ameritech Illinois |
| 1-815-456 | Lee | Franklin Grove | Frontier North, Inc. - Il |
| 1-815-457 | Iroquois | Cissna Park | Frontier Communications Of The Carolinas, Inc - Il |
| 1-815-458 | Will | Braidwood | Ameritech Illinois |
| 1-815-459 | McHenry | Crystal Lake | Ameritech Illinois |
| 1-815-460 | Cook | Chicago | First Communications Llc - Il |
| 1-815-461 | Cook | Chicago | Xo Illinois, Inc. |
| 1-815-462 | Will | New Lenox | Ameritech Illinois |
| 1-815-463 | Will | New Lenox | Ameritech Illinois |
| 1-815-464 | Will | Frankfort | Ameritech Illinois |
| 1-815-465 | Kankakee | Grant Park | Ameritech Illinois |
| 1-815-466 | Kankakee | Grant Park | Ameritech Illinois |
| 1-815-467 | Grundy | Minooka | Ameritech Illinois |
| 1-815-468 | Kankakee | Manteno | Ameritech Illinois |
| 1-815-469 | Will | Frankfort | Ameritech Illinois |
| 1-815-471 | La Salle | Marseilles | Illinois Valley Cellular Rsa 2-i Partnership |
| 1-815-472 | Kankakee | Momence | Ameritech Illinois |
| 1-815-473 | Iroquois | Watseka | Frontier Communications Of The Carolinas, Inc - Il |
| 1-815-474 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| 1-815-475 | Kendall | Yorkville | Ameritech Illinois |
| 1-815-476 | Will | Wilmington | Ameritech Illinois |
| 1-815-477 | McHenry | Crystal Lake | Ameritech Illinois |
| 1-815-478 | Will | Manhattan | Ameritech Illinois |
| 1-815-479 | McHenry | Crystal Lake | Ameritech Illinois |
| 1-815-480 | Winnebago | Rockford | Usa Mobility Wireless, Inc. |
| 1-815-481 | La Salle | Marseilles | Illinois Valley Cellular Rsa 2-i Partnership |
| 1-815-482 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| 1-815-483 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| 1-815-484 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-485 | Will | New Lenox | Ameritech Illinois |
| 1-815-486 | Iroquois | Donovan | Frontier North, Inc. - Il |
| 1-815-487 | Cook | Chicago | First Communications Llc - Il |
| 1-815-488 | La Salle | Marseilles | Illinois Valley Cellular Rsa 2-i Partnership |
| 1-815-489 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-490 | Winnebago | Rockford | Ameritech Illinois |
| 1-815-491 | Winnebago | Rockford | 365 Wireless, Llc |
| 1-815-492 | Jo Daviess | Apple River | Frontier North, Inc. - Il |
| 1-815-493 | Carroll | Lanark | Citizens Telecom Co Illinois-frontier Citizens -il |
| 1-815-494 | Winnebago | Rockford | United States Cellular Corp. - Illinois |
| 1-815-495 | La Salle | Leland | Frontier North, Inc. - Il |
| 1-815-496 | La Salle | Sheridan | Frontier North, Inc. - Il |
| 1-815-497 | Lee | Compton | Frontier North, Inc. - Il |
| 1-815-498 | DeKalb | Somonauk | Frontier North, Inc. - Il |
| 1-815-499 | Whiteside | Sterling | United States Cellular Corp. - Illinois |
| 1-815-500 | Will | Joliet | Mediacom Telephony Of Illinois, Llc - Il |
| 1-815-501 | DeKalb | Cortland | Sprint Spectrum L.p. |
| 1-815-502 | Cook | Chicago | First Communications Llc - Il |
| 1-815-503 | Peoria | Peoria | Sprint Spectrum L.p. |