| 319-200 | Cedar Rapids, IA | Landline | Imon Communications |
| 319-201 | Mt Pleasant, IA | Wireless | Sprint Spectrum L.p. |
| 319-202 | Cedar Rapids, IA | Wireless | Iowa Wireless Services, Lp |
| 319-203 | Cedar Rapids, IA | Landline | Mcc Telephony Of Iowa |
| 319-208 | Burlington, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-209 | Burlington, IA | Wireless | Sprint Spectrum L.p. |
| 319-210 | Cedar Rapids, IA | Wireless | Sprint Spectrum L.p. |
| 319-212 | Columbus Jct, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-213 | Cedar Rapids, IA | Landline | Mcimetro Access Transmission Services LLC |
| 319-214 | Vinton, IA | Landline | Mcc Telephony Of Iowa |
| 319-215 | Waterloo, IA | Landline | United States Cellular Corp. - Iowa |
| 319-217 | Mount Pleasant, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-219 | Mount Pleasant, IA | Landline | Local Telephone Data Services Corp. DBA Ltds Corp. |
| 319-221 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-222 | Cedar Falls, IA | Landline | Qwest Corporation |
| 319-223 | Newhall, IA | Landline | South Slope Cooperative Telephone Co. |
| 319-224 | Walker, IA | Landline | Windstream Iowa Communications - North |
| 319-225 | Amana, IA | Landline | Mcc Telephony Of Iowa |
| 319-226 | Waterloo, IA | Landline | Qwest Corporation |
| 319-227 | Norway, IA | Landline | South Slope Cooperative Telephone Co. |
| 319-228 | Van Horne, IA | Landline | Van Horne Cooperative Telephone Company |
| 319-230 | Waterloo, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-231 | Waterloo, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-232 | Waterloo, IA | Landline | Qwest Corporation |
| 319-233 | Waterloo, IA | Landline | Qwest Corporation |
| 319-234 | Waterloo, IA | Landline | Qwest Corporation |
| 319-235 | Waterloo, IA | Landline | Qwest Corporation |
| 319-236 | Waterloo, IA | Landline | Qwest Corporation |
| 319-237 | Burlington, IA | Landline | Local Telephone Data Services Corp. DBA Ltds Corp. |
| 319-238 | Oelwein, IA | Wireless | Zayo Group LLC |
| 319-239 | Waterloo, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-240 | Waterloo, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-241 | Cedar Rapids, IA | Wireless | Iowa Wireless Services, Lp |
| 319-242 | Cedar Falls, IA | Landline | AT&T Local |
| 319-243 | Cedar Falls, IA | Landline | Qwest Corporation |
| 319-244 | Ely, IA | Landline | Mcc Telephony Of Iowa |
| 319-246 | Fort Madison, IA | Landline | AT&T Local |
| 319-247 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-248 | Iowa City, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-250 | Fort Madison, IA | Landline | Onvoy |
| 319-253 | Hillsboro, IA | Landline | Windstream Iowa Communications |
| 319-254 | Crawfordsville, IA | Landline | Windstream Iowa Communications |
| 319-255 | Columbus Jct, IA | Landline | Local Telephone Data Services Corp. DBA Ltds Corp. |
| 319-256 | Wayland, IA | Landline | Farmers & Merchants Mutual Telephone Co. |
| 319-257 | Winfield, IA | Landline | Windstream Iowa Communications |
| 319-258 | Salem, IA | Landline | Windstream Iowa Communications |
| 319-261 | Cedar Rapids, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-262 | Kalona, IA | Landline | Mcc Telephony Of Iowa |
| 319-263 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-265 | Cedar Rapids, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-266 | Cedar Falls, IA | Landline | Qwest Corporation |
| 319-267 | Allison, IA | Landline | Dumont Telephone Co. |
| 319-268 | Cedar Falls, IA | Landline | Qwest Corporation |
| 319-269 | Waterloo, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-270 | Cedar Rapids, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-272 | Waterloo, IA | Landline | Qwest Corporation |
| 319-273 | Cedar Falls, IA | Landline | Qwest Corporation |
| 319-274 | Waterloo, IA | Landline | Qwest Corporation |
| 319-275 | Tripoli, IA | Landline | Butler - Bremer Mutual Telephone Co. |
| 319-276 | Plainfield, IA | Landline | Butler - Bremer Mutual Telephone Co. |
| 319-277 | Cedar Falls, IA | Landline | Qwest Corporation |
| 319-278 | Clarksville, IA | Landline | Butler - Bremer Mutual Telephone Co. |
| 319-279 | Readlyn, IA | Landline | Readlyn Telephone Co. |
| 319-282 | North English, IA | Landline | Mcc Telephony Of Iowa |
| 319-283 | Oelwein, IA | Landline | Qwest Corporation |
| 319-284 | Oelwein, IA | Landline | East Buchanan Telephone Cooperative |
| 319-285 | Kalona, IA | Landline | Mcc Telephony Of Iowa |
| 319-286 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-287 | Waterloo, IA | Landline | Qwest Corporation |
| 319-288 | Keosauqua, IA | Wireless | Iowa Wireless Services, Lp |
| 319-290 | Waterloo, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-291 | Waterloo, IA | Landline | Qwest Corporation |
| 319-292 | Waterloo, IA | Landline | Qwest Corporation |
| 319-293 | Keosauqua, IA | Landline | Van Buren Telephone Co. |
| 319-294 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-295 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-296 | Waterloo, IA | Landline | Qwest Corporation |
| 319-297 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-298 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-310 | Cedar Rapids, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-312 | Dysart, IA | Landline | Mcc Telephony Of Iowa |
| 319-313 | Keokuk, IA | Landline | Local Telephone Data Services Corp. DBA Ltds Corp. |
| 319-316 | Fort Madison, IA | Landline | Local Telephone Data Services Corp. DBA Ltds Corp. |
| 319-321 | Iowa City, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-322 | Norway, IA | Landline | Mcc Telephony Of Iowa |
| 319-325 | Iowa City, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-327 | Independence, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-328 | Newhall, IA | Landline | Mcc Telephony Of Iowa |
| 319-329 | Cedar Rapids, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-330 | Iowa City, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-331 | Iowa City, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-332 | Independence, IA | Landline | Independence Telecommunications Utility |
| 319-333 | Iowa City, IA | Landline | Mcc Telephony Of Iowa |
| 319-334 | Independence, IA | Landline | Qwest Corporation |
| 319-335 | Iowa City, IA | Landline | Qwest Corporation |
| 319-336 | Riverside, IA | Landline | Mcc Telephony Of Iowa |
| 319-337 | Iowa City, IA | Landline | Qwest Corporation |
| 319-338 | Iowa City, IA | Landline | Qwest Corporation |
| 319-339 | Iowa City, IA | Landline | Qwest Corporation |
| 319-341 | Iowa City, IA | Landline | Qwest Corporation |
| 319-342 | La Porte City, IA | Landline | La Porte City Telephone Company |
| 319-343 | Shellsburg, IA | Landline | Shellsburg Cablevision |
| 319-345 | Reinbeck, IA | Landline | Windstream Iowa Communications - North |
| 319-346 | Parkersburg, IA | Landline | Qwest Corporation |
| 319-347 | Aplington, IA | Landline | Windstream Iowa Communications - Systems |
| 319-350 | Cedar Rapids, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-351 | Iowa City, IA | Landline | Qwest Corporation |
| 319-352 | Waverly, IA | Landline | Qwest Corporation |
| 319-353 | Iowa City, IA | Landline | Qwest Corporation |
| 319-354 | Iowa City, IA | Landline | Qwest Corporation |
| 319-355 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-356 | Iowa City, IA | Landline | Qwest Corporation |
| 319-357 | Fairfax, IA | Landline | Mcc Telephony Of Iowa |
| 319-358 | Iowa City, IA | Landline | Qwest Corporation |
| 319-359 | Iowa City, IA | Landline | Mcc Telephony Of Iowa |
| 319-360 | Cedar Rapids, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-361 | Cedar Rapids, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-362 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-363 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-364 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-365 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-366 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-367 | New London, IA | Landline | Windstream Iowa Communications |
| 319-368 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-369 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-371 | Fort Madison, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-372 | Fort Madison, IA | Landline | Qwest Corporation |
| 319-373 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-375 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-376 | Fort Madison, IA | Landline | Qwest Corporation |
| 319-377 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-378 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-382 | Cedar Rapids, IA | Wireless | 365 Wireless |
| 319-383 | Iowa City, IA | Wireless | New Cingular Wireless PCS - IL |
| 319-384 | Iowa City, IA | Landline | Qwest Corporation |
| 319-385 | Mount Pleasant, IA | Landline | Windstream Iowa Communications |
| 319-389 | Cedar Rapids, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-390 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-392 | Danville, IA | Landline | Danville Mutual Telephone Co. |
| 319-393 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-394 | Mediapolis, IA | Landline | Mediapolis Telephone Co. |
| 319-395 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-396 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-397 | Milton, IA | Landline | Van Buren Telephone Co. |
| 319-398 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-399 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-400 | Iowa City, IA | Wireless | New Cingular Wireless PCS - IL |
| 319-404 | Waterloo, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-406 | Denver, IA | Landline | AT&T Local |
| 319-408 | Lisbon, IA | Landline | Mcc Telephony Of Iowa |
| 319-409 | Cedar Rapids, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-415 | Waterloo, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-421 | Shell Rock, IA | Landline | Mcc Telephony Of Iowa |
| 319-423 | Cedar Rapids, IA | Landline | Teleport Communications America |
| 319-425 | Anamosa, IA | Landline | Martelle Coop Tel Asc DBA Martelle Comm Coop Ia |
| 319-427 | Waterloo, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-429 | Waterloo, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-430 | Iowa City, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-431 | Cedar Rapids, IA | Wireless | Sprint Spectrum L.p. |
| 319-432 | Cedar Rapids, IA | Landline | Neutral Tandem-iowa |
| 319-433 | Waterloo, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-434 | Belle Plaine, IA | Landline | Coon Creek Telecommunications Corp. |
| 319-435 | Coggon, IA | Landline | Qwest Corporation |
| 319-436 | Shellsburg, IA | Landline | Farmers Mutual Telephone Co. |
| 319-437 | Central City, IA | Landline | Prairieburg Telephone Co. |
| 319-438 | Central City, IA | Landline | Windstream Iowa Communications - North |
| 319-439 | Elberon, IA | Landline | Keystone Farms Cooperative Telephone Company |
| 319-440 | Cedar Rapids, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-442 | Keystone, IA | Landline | Keystone Farms Cooperative Telephone Company |
| 319-443 | Urbana, IA | Landline | Farmers Mutual Telephone Co. |
| 319-444 | Belle Plaine, IA | Landline | Windstream Iowa Communications - North |
| 319-445 | Reinbeck, IA | Landline | Mcc Telephony Of Iowa |
| 319-446 | Atkins, IA | Landline | Atkins Telephone Co. |
| 319-447 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-448 | Walker, IA | Landline | Windstream Iowa Communications - North |
| 319-449 | Cedar Rapids, IA | Landline | Onvoy |
| 319-450 | Cedar Rapids, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-453 | Shellsburg, IA | Landline | Farmers Mutual Telephone Co. |
| 319-454 | Blairstown, IA | Landline | Coon Creek Telephone Co. |
| 319-455 | Lisbon, IA | Landline | Windstream Iowa Communications - Systems |
| 319-456 | Richland, IA | Landline | Windstream Iowa Communications |
| 319-457 | Burlington, IA | Wireless | Iowa Wireless Services, Lp |
| 319-458 | Washington, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-459 | North Liberty, IA | Landline | Mcc Telephony Of Iowa |
| 319-460 | Washington, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-461 | Washington, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-462 | Anamosa, IA | Landline | Qwest Corporation |
| 319-463 | Montrose, IA | Landline | Windstream Iowa Communications |
| 319-464 | Waterloo, IA | Landline | AT&T Local |
| 319-465 | Monticello, IA | Landline | Qwest Corporation |
| 319-466 | Iowa City, IA | Landline | Qwest Corporation |
| 319-467 | Iowa City, IA | Landline | Qwest Corporation |
| 319-469 | Salem, IA | Landline | Windstream Iowa Communications |
| 319-470 | Fort Madison, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-471 | Iowa City, IA | Landline | AT&T Local |
| 319-472 | Vinton, IA | Landline | Qwest Corporation |
| 319-473 | Keokuk, IA | Wireless | Iowa Wireless Services, Lp |
| 319-474 | Brandon, IA | Landline | Windstream Iowa Communications |
| 319-475 | Mount Auburn, IA | Landline | La Porte City Telephone Company |
| 319-476 | Dysart, IA | Landline | Farmers Cooperative Telephone Co. |
| 319-477 | Garrison, IA | Landline | Keystone Farms Cooperative Telephone Company |
| 319-478 | Traer, IA | Landline | Windstream Iowa Communications - North |
| 319-479 | Clutier, IA | Landline | Farmers Cooperative Telephone Co. |
| 319-480 | Anamosa, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-481 | Anamosa, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-482 | Martelle, IA | Landline | Martelle Cooperative Telephone Association |
| 319-483 | Waverly, IA | Landline | Qwest Corporation |
| 319-484 | Olin, IA | Landline | Olin & Morley Telephone Co. |
| 319-486 | Waterloo, IA | Wireless | Iowa Wireless Services, Lp |
| 319-488 | Keystone, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-489 | Martelle, IA | Landline | Olin & Morley Telephone Co. |
| 319-490 | Cedar Rapids, IA | Wireless | Electronic Engineering Company |
| 319-491 | Cedar Rapids, IA | Landline | AT&T Local |
| 319-493 | Waterloo, IA | Wireless | Sprint Spectrum L.p. |
| 319-494 | Mount Sterling, IA | Landline | Van Buren Telephone Co. |
| 319-495 | La Porte City, IA | Landline | Mcc Telephony Of Iowa |
| 319-498 | Birmingham, IA | Landline | Van Buren Telephone Co. |
| 319-499 | Iowa City, IA | Wireless | Sprint Spectrum L.p. |
| 319-504 | Waterloo, IA | Wireless | Sprint Spectrum L.p. |
| 319-505 | Waterloo, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-509 | Oelwein, IA | Wireless | Iowa Wireless Services, Lp |
| 319-512 | Iowa City, IA | Landline | New Cingular Wireless PCS - IL |
| 319-520 | Keokuk, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-521 | Cedar Rapids, IA | Wireless | Iowa Wireless Services, Lp |
| 319-523 | Wapello, IA | Landline | Windstream Iowa Communications |
| 319-524 | Keokuk, IA | Landline | Qwest Corporation |
| 319-525 | Hartwick, IA | Landline | Cooperative Telephone Co. |
| 319-526 | Keokuk, IA | Landline | Qwest Corporation |
| 319-527 | Wapello, IA | Landline | Louisa Communications, L.c. |
| 319-528 | Wever, IA | Landline | Windstream Iowa Communications |
| 319-529 | Waterloo, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-530 | Iowa City, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-531 | Cedar Rapids, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-533 | Cedar Rapids, IA | Wireless | Sprint Spectrum L.p. |
| 319-534 | Danville, IA | Landline | Mcc Telephony Of Iowa |
| 319-535 | Mount Vernon, IA | Wireless | Bandwidth.com Clec |
| 319-536 | Shellsburg, IA | Landline | Shellsburg Cablevision |
| 319-537 | Mount Pleasant, IA | Wireless | Iowa Wireless Services, Lp |
| 319-538 | Cedar Rapids, IA | Landline | Zayo Group LLC |
| 319-540 | Cedar Rapids, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-541 | Iowa City, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-543 | Solon, IA | Landline | Mcc Telephony Of Iowa |
| 319-545 | North Liberty, IA | Landline | South Slope Cooperative Telephone Company |
| 319-548 | Washington, IA | Wireless | Iowa Wireless Services, Lp |
| 319-550 | Cedar Rapids, IA | Landline | United States Cellular Corp. - Iowa |
| 319-551 | Cedar Rapids, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-553 | Cedar Falls, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-558 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-559 | Waverly, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-560 | Cedar Rapids, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-561 | Fort Madison, IA | Wireless | Iowa Wireless Services, Lp |
| 319-572 | Burlington, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-573 | Cedar Rapids, IA | Wireless | New Cingular Wireless PCS - IL |
| 319-575 | Cedar Falls, IA | Landline | Zayo Group LLC |
| 319-576 | Burlington, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-578 | Swisher, IA | Landline | Mcc Telephony Of Iowa |
| 319-585 | Hazleton, IA | Landline | Mcc Telephony Of Iowa |
| 319-591 | Washington, IA | Wireless | Sprint Spectrum L.p. |
| 319-592 | Bonaparte, IA | Landline | Van Buren Telephone Co. |
| 319-594 | Iowa City, IA | Wireless | Sprint Spectrum L.p. |
| 319-596 | Waverly, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-598 | Washington, IA | Landline | Local Telephone Data Services Corp. DBA Ltds Corp. |
| 319-601 | Burlington, IA | Wireless | Sprint Spectrum L.p. |
| 319-610 | Waterloo, IA | Wireless | New Cingular Wireless PCS - IL |
| 319-614 | Packwood, IA | Wireless | New Cingular Wireless PCS - IL |
| 319-621 | Iowa City, IA | Wireless | Sprint Spectrum L.p. |
| 319-622 | Amana, IA | Landline | South Slope Cooperative Telephone Co. |
| 319-623 | Ladora, IA | Landline | Cooperative Telephone Co. |
| 319-624 | North Liberty, IA | Landline | South Slope Cooperative Telephone Company |
| 319-625 | North Liberty, IA | Landline | South Slope Cooperative Telephone Co. |
| 319-626 | North Liberty, IA | Landline | South Slope Cooperative Telephone Co. |
| 319-627 | West Liberty, IA | Landline | West Liberty Telephone Co. |
| 319-628 | Oxford, IA | Landline | Windstream Iowa Communications - North |
| 319-629 | Lone Tree, IA | Landline | Windstream Iowa Communications |
| 319-631 | Iowa City, IA | Wireless | Sprint Spectrum L.p. |
| 319-632 | North Liberty, IA | Landline | South Slope Cooperative Telephone Co. |
| 319-633 | Lone Tree, IA | Landline | Mcc Telephony Of Iowa |
| 319-634 | Aurora, IA | Landline | East Buchanan Telephone Cooperative |
| 319-635 | Fairbank, IA | Landline | Windstream Iowa Communications - North |
| 319-636 | Hazleton, IA | Landline | Windstream Iowa Communications - North |
| 319-638 | Fairbank, IA | Landline | Oran Mutual Telephone Co. |
| 319-639 | Kinross, IA | Landline | Modern Cooperative Telephone Co. |
| 319-640 | Cedar Rapids, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-642 | Marengo, IA | Landline | Windstream Iowa Communications - North |
| 319-643 | West Branch, IA | Landline | West Liberty Telephone Co. |
| 319-644 | Solon, IA | Landline | Windstream Iowa Communications |
| 319-645 | Tiffin, IA | Landline | Windstream Iowa Communications - North |
| 319-646 | Wellman, IA | Landline | Wellman Cooperative Telephone Association |
| 319-647 | Victor, IA | Landline | Cooperative Telephone Co. |
| 319-648 | Riverside, IA | Landline | Windstream Iowa Communications |
| 319-651 | Cedar Rapids, IA | Wireless | Sprint Spectrum L.p. |
| 319-652 | Traer, IA | Landline | Mcc Telephony Of Iowa |
| 319-653 | Washington, IA | Landline | Windstream Iowa Communications - North |
| 319-654 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-655 | North English, IA | Landline | Modern Cooperative Telephone Co. |
| 319-656 | Kalona, IA | Landline | Kalona Cooperative Telephone Co. |
| 319-657 | Ainsworth, IA | Landline | Windstream Iowa Communications |
| 319-658 | Crawfordsville, IA | Landline | Windstream Iowa Communications |
| 319-660 | Williamsburg, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-661 | Williamsburg, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-662 | South Amana, IA | Landline | Windstream Iowa Communications - North |
| 319-664 | North English, IA | Landline | North English Cooperative Telephone Co. |
| 319-665 | North Liberty, IA | Landline | South Slope Cooperative Telephone Co. |
| 319-667 | South English, IA | Landline | Modern Cooperative Telephone Co. |
| 319-668 | Williamsburg, IA | Landline | Windstream Iowa Communications - North |
| 319-669 | Fort Madison, IA | Wireless | New Cingular Wireless PCS - IL |
| 319-670 | Keokuk, IA | Wireless | New Cingular Wireless PCS - IL |
| 319-671 | Burlington, IA | Wireless | Alliance Connect |
| 319-674 | Wellman, IA | Landline | Mcc Telephony Of Iowa |
| 319-677 | Keosauqua, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-678 | Iowa City, IA | Landline | Qwest Corporation |
| 319-679 | Lone Tree, IA | Landline | Sharon Telephone Co. |
| 319-683 | Kalona, IA | Landline | Sharon Telephone Co. |
| 319-685 | Guernsey, IA | Landline | Cooperative Telephone Co. |
| 319-688 | Iowa City, IA | Landline | Qwest Corporation |
| 319-693 | Cedar Rapids, IA | Wireless | New Cingular Wireless PCS - IL |
| 319-694 | Brighton, IA | Landline | Windstream Iowa Communications |
| 319-695 | Packwood, IA | Landline | Windstream Iowa Communications |
| 319-696 | Lockridge, IA | Landline | Windstream Iowa Communications |
| 319-698 | West Chester, IA | Landline | Windstream Iowa Communications - North |
| 319-720 | Cedar Rapids, IA | Landline | Windstream It-comm |
| 319-721 | Cedar Rapids, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-723 | Nichols, IA | Landline | Windstream Iowa Communications |
| 319-725 | Conesville, IA | Landline | Windstream Iowa Communications |
| 319-726 | Letts, IA | Landline | Windstream Iowa Communications |
| 319-728 | Columbus Jct, IA | Landline | Windstream Iowa Communications |
| 319-729 | Letts, IA | Landline | Windstream Iowa Communications |
| 319-730 | Cedar Rapids, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-731 | Cedar Rapids, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-734 | Cedar Rapids, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-738 | Keswick, IA | Landline | Modern Cooperative Telephone Co. |
| 319-739 | Cedar Rapids, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-741 | Marengo, IA | Landline | Coon Creek Telecommunications Corp. |
| 319-743 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-745 | West Liberty, IA | Landline | Mcc Telephony Of Iowa |
| 319-750 | Burlington, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-752 | Burlington, IA | Landline | Qwest Corporation |
| 319-753 | Burlington, IA | Landline | Qwest Corporation |
| 319-754 | Burlington, IA | Landline | Qwest Corporation |
| 319-758 | Burlington, IA | Landline | Qwest Corporation |
| 319-759 | Burlington, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-766 | Oakville, IA | Landline | Windstream Iowa Communications |
| 319-768 | Burlington, IA | Landline | Qwest Corporation |
| 319-774 | Cedar Rapids, IA | Landline | Level 3 Communications |
| 319-775 | Cedar Rapids, IA | Landline | Bandwidth.com Clec |
| 319-777 | Cedar Rapids, IA | Landline | Alliance Connect |
| 319-779 | Kalona, IA | Landline | Mcc Telephony Of Iowa |
| 319-784 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-786 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-788 | Reinbeck, IA | Landline | Reinbeck Municipal Telecommunications Utility |
| 319-790 | Cedar Rapids, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-795 | Keokuk, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-796 | Stockport, IA | Landline | Van Buren Telephone Co. |
| 319-800 | Iowa City, IA | Landline | Zayo Group LLC |
| 319-804 | Cedar Rapids, IA | Landline | Ymax Communications Corp. |
| 319-820 | Monticello, IA | Landline | Level 3 Communications |
| 319-821 | Anamosa, IA | Wireless | Iowa Wireless Services, Lp |
| 319-822 | Dunkerton, IA | Landline | Dunkerton Telephone Cooperative |
| 319-823 | Grundy Center, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-824 | Grundy Center, IA | Landline | Windstream Iowa Communications - Systems |
| 319-825 | Grundy Center, IA | Landline | Grundy Center Communications Utility |
| 319-826 | Cedar Rapids, IA | Landline | Mcc Telephony Of Iowa |
| 319-827 | Jesup, IA | Landline | Farmers Mutual Telephone Co. |
| 319-828 | North Liberty, IA | Landline | South Slope Cooperative Telephone Company |
| 319-830 | Waterloo, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-832 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-833 | Waterloo, IA | Landline | Qwest Corporation |
| 319-834 | Iowa City, IA | Landline | Qwest Corporation |
| 319-835 | Donnellson, IA | Landline | Windstream Iowa Communications |
| 319-836 | Primrose, IA | Landline | Windstream Iowa Communications |
| 319-837 | West Point, IA | Landline | Windstream Iowa Communications |
| 319-838 | Argyle, IA | Landline | Windstream Iowa Communications |
| 319-841 | Ely, IA | Landline | South Slope Cooperative Telephone Co. |
| 319-842 | Alburnett, IA | Landline | Farmers Mutual Telephone Co. |
| 319-844 | Monticello, IA | Landline | Mcc Telephony Of Iowa |
| 319-845 | Fairfax, IA | Landline | South Slope Cooperative Telephone Co. |
| 319-846 | Fairfax, IA | Landline | South Slope Cooperative Telephone Co. |
| 319-848 | Ely, IA | Landline | South Slope Cooperative Telephone Co. |
| 319-849 | Center Point, IA | Landline | Qwest Corporation |
| 319-850 | Burlington, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-851 | Palo, IA | Landline | Palo Cooperative Telephone Association |
| 319-853 | North Liberty, IA | Landline | Cellco Partnership DBA Verizon Wireless |
| 319-854 | Springville, IA | Landline | Springville Cooperative Telephone Assn. |
| 319-855 | Iowa City, IA | Wireless | New Cingular Wireless PCS - IL |
| 319-857 | Swisher, IA | Landline | Swisher Telephone Co. |
| 319-859 | Cedar Falls, IA | Landline | Qwest Corporation |
| 319-861 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-862 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-863 | Washington, IA | Landline | Windstream Iowa Communications - North |
| 319-865 | Mount Union, IA | Landline | Windstream Iowa Communications |
| 319-866 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-868 | Morning Sun, IA | Landline | Mutual Telephone Co. Of Morning Sun |
| 319-874 | Waterloo, IA | Landline | Qwest Corporation |
| 319-877 | West Branch, IA | Landline | Mcc Telephony Of Iowa |
| 319-878 | Farmington, IA | Landline | Windstream Iowa Communications |
| 319-882 | Tripoli, IA | Landline | Butler - Bremer Mutual Telephone Co. |
| 319-883 | Waterloo, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-884 | Aplington, IA | Landline | Windstream Iowa Communications - Systems |
| 319-885 | Shell Rock, IA | Landline | Shell Rock Communications |
| 319-887 | Iowa City, IA | Landline | Qwest Corporation |
| 319-892 | Cedar Rapids, IA | Landline | Mcleodusa Telecommunications Services- Ia |
| 319-895 | Mount Vernon, IA | Landline | Qwest Corporation |
| 319-896 | Cedar Rapids, IA | Landline | Qwest Corporation |
| 319-899 | Cedar Rapids, IA | Wireless | Cellco Partnership DBA Verizon Wireless |
| 319-929 | Cedar Rapids, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-930 | Iowa City, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-931 | Mount Pleasant, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-934 | Quasqueton, IA | Landline | East Buchanan Telephone Cooperative |
| 319-935 | Winthrop, IA | Landline | East Buchanan Telephone Cooperative |
| 319-936 | Iowa City, IA | Wireless | Iowa Wireless Services, Lp |
| 319-937 | Mediapolis, IA | Landline | Mediapolis Telephone Co. |
| 319-938 | Rowley, IA | Landline | Windstream Iowa Communications |
| 319-939 | Waterloo, IA | Wireless | United States Cellular Corp. - Iowa |
| 319-961 | Waterloo, IA | Wireless | Iowa Wireless Services, Lp |
| 319-981 | Cedar Rapids, IA | Wireless | Iowa Wireless Services, Lp |
| 319-983 | New Hartford, IA | Landline | Qwest Corporation |
| 319-984 | Denver, IA | Landline | Qwest Corporation |
| 319-985 | Dodgeville, IA | Landline | Mediapolis Telephone Co. |
| 319-986 | Mount Pleasant, IA | Landline | Windstream Iowa Communications |
| 319-987 | Janesville, IA | Landline | Windstream Iowa Communications - Systems |
| 319-988 | Hudson, IA | Landline | Qwest Corporation |
| 319-989 | Dike, IA | Landline | Qwest Corporation |
| 319-999 | Cedar Rapids, IA | Landline | Atkins Telephone Company |