| 636-200 | Saint Louis | Landline | Fusion Cloud Services |
| 636-201 | Warrenton | Wireless | New Cingular Wireless |
| 636-202 | Warrenton | Landline | Mcimetro Access Transmission Services |
| 636-203 | Fenton | Landline | Mcimetro Access Transmission Services |
| 636-205 | Winfield | Landline | Level 3 Communications |
| 636-206 | Saint Charles | Landline | AT&T |
| 636-207 | Valley Park | Landline | Southwestern Bell |
| 636-208 | Herculaneum | Wireless | New Cingular Wireless |
| 636-209 | Herculaneum | Wireless | Verizon |
| 636-210 | Union | Wireless | New Cingular Wireless |
| 636-212 | Arnold | Wireless | Verizon |
| 636-215 | Saint Louis | Wireless | Verizon |
| 636-216 | Saint Louis | Landline | XO Communications |
| 636-219 | Saint Charles | Wireless | T-Mobile |
| 636-220 | Valley Park | Landline | Charter Fiberlink |
| 636-221 | Washington | Landline | Southwestern Bell |
| 636-222 | Cedar Hill | Wireless | Verizon |
| 636-223 | Imperial | Landline | AT&T |
| 636-224 | Pevely | Landline | Windstream Nuvox Missouri |
| 636-225 | Valley Park | Landline | Southwestern Bell |
| 636-226 | Valley Park | Landline | Southwestern Bell |
| 636-227 | Valley Park | Landline | Southwestern Bell |
| 636-228 | Augusta | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-229 | Saint Charles | Landline | Mcimetro Access Transmission Services |
| 636-230 | Valley Park | Landline | Southwestern Bell |
| 636-231 | Washington | Landline | Socket Telecom |
| 636-232 | Herculaneum | Landline | Level 3 Communications |
| 636-233 | Saint Charles | Landline | Verizon |
| 636-234 | Union | Landline | Level 3 Communications |
| 636-235 | Warrenton | Landline | Level 3 Communications |
| 636-236 | Saint Louis | Wireless | Sprint Spectrum |
| 636-237 | Chesterfield | Landline | Mcimetro Access Transmission Services |
| 636-238 | Valley Park | Landline | Mcimetro Access Transmission Services |
| 636-239 | Washington | Landline | Southwestern Bell |
| 636-240 | Saint Peters | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-242 | Washington | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-243 | Valles Mines | Landline | Level 3 Communications |
| 636-244 | Saint Charles | Landline | Charter Fiberlink |
| 636-245 | Saint Louis | Wireless | New Cingular Wireless |
| 636-246 | Saint Charles | Landline | XO Communications |
| 636-247 | Chesterfield | Landline | Southwestern Bell |
| 636-248 | Saint Peters | Wireless | Verizon |
| 636-249 | Union | Wireless | T-Mobile |
| 636-250 | Saint Charles | Landline | Orchard Farm Tel. |
| 636-251 | Foristell | Wireless | Verizon |
| 636-253 | High Ridge | Wireless | T-Mobile |
| 636-255 | Saint Charles | Landline | Southwestern Bell |
| 636-256 | Valley Park | Landline | Southwestern Bell |
| 636-257 | Pacific | Landline | Southwestern Bell |
| 636-258 | Saint Charles | Landline | Orchard Farm Tel. |
| 636-259 | Gray Summit | Wireless | T-Mobile |
| 636-261 | Saint Charles | Landline | Southwestern Bell |
| 636-262 | Chesterfield | Wireless | Sprint Spectrum |
| 636-263 | Saint Charles | Landline | AT&T |
| 636-264 | Winfield | Landline | Level 3 Communications |
| 636-265 | O Fallon | Landline | Charter Fiberlink |
| 636-266 | Washington | Landline | Level 3 Communications |
| 636-271 | Pacific | Landline | Southwestern Bell |
| 636-272 | Saint Peters | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-273 | Wildwood | Landline | Southwestern Bell |
| 636-274 | Cedar Hill | Landline | Southwestern Bell |
| 636-275 | Saint Louis | Wireless | Verizon |
| 636-277 | Saint Charles | Landline | Peerless Network Of Missouri |
| 636-278 | Saint Peters | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-279 | Saint Peters | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-281 | Saint Peters | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-282 | Arnold | Landline | Southwestern Bell |
| 636-283 | Washington | Landline | Teleport Communications America |
| 636-284 | Saint Charles | Wireless | New Cingular Wireless |
| 636-285 | Cedar Hill | Landline | Southwestern Bell |
| 636-287 | Arnold | Landline | Southwestern Bell |
| 636-288 | Saint Charles | Wireless | New Cingular Wireless |
| 636-290 | Troy | Wireless | T-Mobile |
| 636-292 | Chesterfield | Landline | Teleport Communications America |
| 636-293 | Saint Peters | Wireless | T-Mobile |
| 636-294 | Saint Peters | Landline | Charter Fiberlink |
| 636-295 | Troy | Wireless | Verizon |
| 636-296 | Arnold | Landline | Southwestern Bell |
| 636-297 | Warrenton | Wireless | Verizon |
| 636-299 | Chesterfield | Landline | AT&T |
| 636-300 | Saint Charles | Landline | Southwestern Bell |
| 636-303 | Union | Landline | Telnyx |
| 636-305 | Fenton | Landline | Southwestern Bell |
| 636-306 | Pevely | Wireless | T-Mobile |
| 636-310 | Hillsboro | Landline | Charter Fiberlink |
| 636-312 | Saint Peters | Wireless | New Cingular Wireless |
| 636-317 | Saint Louis | Landline | Charter Fiberlink |
| 636-318 | Troy | Wireless | T-Mobile |
| 636-319 | O Fallon | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-320 | Saint Charles | Wireless | USA Mobility Wireless |
| 636-321 | Arnold | Landline | Windstream Nuvox Missouri |
| 636-322 | Union | Landline | Southwestern Bell |
| 636-323 | Imperial | Landline | Level 3 Communications |
| 636-324 | Wildwood | Landline | Socket Telecom |
| 636-326 | Fenton | Landline | Southwestern Bell |
| 636-327 | Wentzville | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-328 | Saint Charles | Landline | Mcimetro Access Transmission Services |
| 636-329 | Saint Charles | Landline | Southwestern Bell |
| 636-330 | Hillsboro | Landline | Peerless Network Of Missouri |
| 636-331 | Herculaneum | Wireless | T-Mobile |
| 636-332 | Wentzville | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-333 | Arnold | Landline | Fusion Cloud Services |
| 636-334 | Pacific | Landline | Level 3 Communications |
| 636-335 | Fenton | Landline | Mcimetro Access Transmission Services |
| 636-336 | Saint Charles | Landline | Mcleodusa Telecommunication Services |
| 636-337 | Valles Mines | Landline | Southwestern Bell |
| 636-338 | Hawk Point | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-339 | Saint Peters | Wireless | T-Mobile |
| 636-343 | Fenton | Landline | Southwestern Bell |
| 636-344 | Saint Charles | Landline | Southwestern Bell |
| 636-345 | Saint Charles | Landline | Mcimetro Access Transmission Services |
| 636-346 | Saint Louis | Wireless | Sprint Spectrum |
| 636-347 | Hillsboro | Landline | Hd Carrier |
| 636-348 | Saint Peters | Landline | Fractel |
| 636-349 | Fenton | Landline | Southwestern Bell |
| 636-352 | Saint Charles | Landline | Level 3 Communications |
| 636-355 | Foley | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-356 | Moscow Mills | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-357 | Wentzville | Wireless | New Cingular Wireless |
| 636-358 | Troy | Wireless | New Cingular Wireless |
| 636-359 | Warrenton | Wireless | New Cingular Wireless |
| 636-362 | Saint Charles | Landline | Southwestern Bell |
| 636-363 | Arnold | Wireless | American Messaging Services |
| 636-364 | Saint Clair | Landline | Level 3 Communications |
| 636-366 | Moscow Mills | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-368 | Chesterfield | Landline | Sprint Spectrum |
| 636-373 | Saint Charles | Wireless | Sprint Spectrum |
| 636-375 | High Ridge | Landline | Southwestern Bell |
| 636-376 | High Ridge | Landline | Southwestern Bell |
| 636-377 | Warrenton | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-379 | Saint Peters | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-383 | Troy | Wireless | T-Mobile |
| 636-384 | Wright City | Wireless | New Cingular Wireless |
| 636-385 | Saint Peters | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-386 | Valley Park | Landline | Southwestern Bell |
| 636-387 | Saint Peters | Landline | Charter Fiberlink |
| 636-388 | Union | Landline | Level 3 Communications |
| 636-389 | Saint Charles | Wireless | Level 3 Communications |
| 636-390 | Washington | Landline | Southwestern Bell |
| 636-391 | Valley Park | Landline | Southwestern Bell |
| 636-392 | Washington | Landline | Aurora Communications |
| 636-393 | Pacific | Landline | Charter Fiberlink |
| 636-394 | Valley Park | Landline | Southwestern Bell |
| 636-395 | Saint Charles | Landline | AT&T |
| 636-397 | Saint Peters | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-398 | Wentzville | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-399 | Valley Park | Wireless | Verizon |
| 636-400 | Portage Des Sioux | Landline | Fusion Cloud Services |
| 636-402 | Gray Summit | Landline | Windstream Nuvox Missouri |
| 636-403 | Saint Charles | Wireless | USA Mobility Wireless |
| 636-405 | Wildwood | Landline | Southwestern Bell |
| 636-409 | Saint Peters | Landline | Charter Fiberlink |
| 636-410 | Saint Charles | Landline | XO Communications |
| 636-412 | Valley Park | Landline | XO Communications |
| 636-422 | Wildwood | Landline | Southwestern Bell |
| 636-425 | West Alton | Landline | Windstream Nuvox Missouri |
| 636-426 | Portage Des Sioux | Wireless | T-Mobile |
| 636-428 | House Springs | Landline | Teleport Communications America |
| 636-429 | Eureka | Landline | Peerless Network Of Missouri |
| 636-431 | Valley Park | Landline | Mcimetro Access Transmission Services |
| 636-432 | Washington | Landline | Southwestern Bell |
| 636-433 | Marthasville | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-434 | Portage Des Sioux | Landline | Southwestern Bell |
| 636-435 | Valley Park | Landline | Mcimetro Access Transmission Services |
| 636-438 | Valley Park | Landline | XO Communications |
| 636-439 | Saint Peters | Wireless | New Cingular Wireless |
| 636-441 | Saint Charles | Landline | Southwestern Bell |
| 636-442 | Saint Charles | Landline | Southwestern Bell |
| 636-443 | Saint Charles | Landline | Southwestern Bell |
| 636-444 | Saint Louis | Landline | Fusion Cloud Services |
| 636-445 | Wentzville | Landline | CenturyLink Communications |
| 636-447 | Saint Charles | Landline | Southwestern Bell |
| 636-448 | Saint Charles | Wireless | New Cingular Wireless |
| 636-449 | Saint Louis | Landline | Windstream Nuvox Missouri |
| 636-451 | Gray Summit | Landline | Southwestern Bell |
| 636-452 | Hillsboro | Landline | Southwestern Bell |
| 636-456 | Warrenton | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-458 | Wildwood | Landline | Southwestern Bell |
| 636-459 | Foristell | Wireless | Verizon |
| 636-461 | Imperial | Landline | Southwestern Bell |
| 636-462 | Troy | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-463 | Foristell | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-464 | Imperial | Landline | Southwestern Bell |
| 636-465 | Herculaneum | Landline | Charter Fiberlink |
| 636-466 | Wentzville | Wireless | New Cingular Wireless |
| 636-467 | Imperial | Landline | Southwestern Bell |
| 636-474 | Saint Peters | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-475 | Herculaneum | Landline | Southwestern Bell |
| 636-477 | Saint Charles | Landline | Southwestern Bell |
| 636-479 | Herculaneum | Landline | Southwestern Bell |
| 636-481 | Hillsboro | Landline | Level 3 Communications |
| 636-482 | Augusta | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-484 | Valley Park | Wireless | Verizon |
| 636-485 | Saint Peters | Wireless | Verizon |
| 636-486 | Saint Charles | Landline | Level 3 Communications |
| 636-487 | Saint Charles | Landline | Level 3 Communications |
| 636-488 | Jonesburg | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-489 | Chesterfield | Landline | Level 3 Communications |
| 636-492 | Fenton | Landline | Mcimetro Access Transmission Services |
| 636-493 | Saint Charles | Landline | Charter Fiberlink |
| 636-495 | House Springs | Landline | Windstream Nuvox Missouri |
| 636-496 | Fenton | Landline | Southwestern Bell |
| 636-497 | Wentzville | Wireless | T-Mobile |
| 636-498 | Saint Charles | Landline | Southwestern Bell |
| 636-500 | Imperial | Landline | Fusion Cloud Services |
| 636-515 | Saint Peters | Wireless | New Cingular Wireless |
| 636-517 | Valley Park | Landline | Southwestern Bell |
| 636-519 | Chesterfield | Landline | Southwestern Bell |
| 636-524 | Herculaneum | Landline | Level 3 Communications |
| 636-525 | Imperial | Landline | Southwestern Bell |
| 636-527 | Valley Park | Landline | Southwestern Bell |
| 636-528 | Troy | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-529 | Valley Park | Landline | Southwestern Bell |
| 636-530 | Chesterfield | Landline | Southwestern Bell |
| 636-532 | Chesterfield | Landline | Southwestern Bell |
| 636-533 | Fenton | Landline | XO Communications |
| 636-534 | Chesterfield | Landline | Mcimetro Access Transmission Services |
| 636-535 | Herculaneum | Wireless | Verizon |
| 636-536 | Chesterfield | Landline | Southwestern Bell |
| 636-537 | Chesterfield | Landline | Southwestern Bell |
| 636-538 | Wentzville | Wireless | T-Mobile |
| 636-541 | Saint Charles | Wireless | New Cingular Wireless |
| 636-542 | O Fallon | Landline | Windstream Nuvox Missouri |
| 636-543 | Herculaneum | Landline | Teleport Communications America |
| 636-544 | Saint Peters | Wireless | New Cingular Wireless |
| 636-547 | Imperial | Landline | Global Crossing Local Services |
| 636-548 | Arnold | Landline | Global Crossing Local Services |
| 636-549 | Eureka | Landline | Windstream Nuvox Missouri |
| 636-551 | Cedar Hill | Wireless | Verizon |
| 636-552 | Valley Park | Landline | Level 3 Communications |
| 636-556 | Saint Ann | Landline | Global Crossing Local Services |
| 636-557 | Valley Park | Landline | XO Communications |
| 636-561 | O Fallon | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-565 | Valles Mines | Landline | Level 3 Communications |
| 636-566 | Winfield | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-573 | Saint Charles | Landline | XO Communications |
| 636-574 | Saint Charles | Wireless | American Messaging Services |
| 636-575 | High Ridge | Wireless | New Cingular Wireless |
| 636-577 | Saint Peters | Wireless | New Cingular Wireless |
| 636-578 | Saint Louis | Wireless | Sprint Spectrum |
| 636-579 | Chesterfield | Wireless | T-Mobile |
| 636-582 | Union | Landline | Aurora Communications |
| 636-583 | Union | Landline | Southwestern Bell |
| 636-584 | Union | Landline | Southwestern Bell |
| 636-585 | High Hill | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-586 | Valles Mines | Landline | Southwestern Bell |
| 636-587 | Eureka | Landline | Southwestern Bell |
| 636-590 | Saint Ann | Landline | Global Crossing Local Services |
| 636-591 | Valley Park | Landline | Mcleodusa Telecommunication Services |
| 636-594 | Valley Park | Landline | XO Communications |
| 636-597 | Truxton | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-600 | Saint Louis | Landline | Fusion Cloud Services |
| 636-614 | Saint Peters | Landline | Level 3 Communications |
| 636-622 | Troy | Wireless | Mcimetro Access Transmission Services |
| 636-625 | O Fallon | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-626 | Saint Peters | Landline | Windstream Nuvox Missouri |
| 636-627 | Saint Louis | Landline | AT&T |
| 636-628 | Saint Ann | Landline | Global Crossing Local Services |
| 636-629 | Saint Clair | Landline | Southwestern Bell |
| 636-633 | Imperial | Wireless | T-Mobile |
| 636-634 | Saint Ann | Landline | Global Crossing Local Services |
| 636-637 | Herculaneum | Landline | Mcimetro Access Transmission Services |
| 636-638 | Herculaneum | Landline | Charter Fiberlink |
| 636-639 | Wentzville | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-642 | Imperial | Landline | Level 3 Communications |
| 636-648 | Saint Ann | Landline | Global Crossing Local Services |
| 636-649 | Union | Wireless | New Cingular Wireless |
| 636-651 | Saint Louis | Landline | Teleport Communications America |
| 636-660 | Fenton | Landline | Mcleodusa Telecommunication Services |
| 636-661 | Old Monroe | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-662 | Foley | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-665 | Old Monroe | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-666 | Union | Landline | Terra Nova Telecom Inc. |
| 636-667 | Washington | Wireless | Sprint Spectrum |
| 636-668 | Winfield | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-669 | Saint Charles | Landline | Mcleodusa Telecommunication Services |
| 636-671 | House Springs | Landline | Southwestern Bell |
| 636-673 | Foristell | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-674 | Imperial | Landline | Windstream Nuvox Missouri |
| 636-675 | Chesterfield | Wireless | T-Mobile |
| 636-677 | High Ridge | Landline | Southwestern Bell |
| 636-678 | Fenton | Landline | Global Crossing Local Services |
| 636-679 | Wentzville | Wireless | T-Mobile |
| 636-680 | Saint Louis | Landline | Windstream Nuvox Missouri |
| 636-681 | Saint Louis | Landline | Teleport Communications America |
| 636-685 | Saint Louis | Landline | Teleport Communications America |
| 636-686 | Saint Louis | Landline | Teleport Communications America |
| 636-688 | Saint Louis | Landline | Teleport Communications America |
| 636-689 | Saint Louis | Landline | Teleport Communications America |
| 636-692 | House Springs | Landline | Windstream Nuvox Missouri |
| 636-695 | O Fallon | Landline | Teleport Communications America |
| 636-696 | Saint Peters | Landline | Teleport Communications America |
| 636-697 | Saint Louis | Landline | Teleport Communications America |
| 636-698 | Wentzville | Landline | Teleport Communications America |
| 636-699 | Saint Louis | Landline | Fusion Cloud Services |
| 636-706 | Wentzville | Landline | CenturyLink Communications |
| 636-707 | Cedar Hill | Landline | Level 3 Communications |
| 636-717 | Fenton | Landline | Southwestern Bell |
| 636-720 | Saint Louis | Landline | Windstream Nuvox Missouri |
| 636-722 | Saint Charles | Landline | Southwestern Bell |
| 636-723 | Saint Charles | Landline | Southwestern Bell |
| 636-724 | Saint Charles | Landline | Southwestern Bell |
| 636-725 | Herculaneum | Landline | Windstream Nuvox Missouri |
| 636-728 | Chesterfield | Landline | Southwestern Bell |
| 636-730 | Chesterfield | Landline | Southwestern Bell |
| 636-732 | Gray Summit | Landline | Fractel |
| 636-733 | Chesterfield | Landline | Southwestern Bell |
| 636-734 | Saint Louis | Wireless | Sprint Spectrum |
| 636-735 | Chesterfield | Landline | Southwestern Bell |
| 636-736 | Chesterfield | Landline | Southwestern Bell |
| 636-737 | Chesterfield | Landline | Southwestern Bell |
| 636-741 | Imperial | Landline | Windstream Nuvox Missouri |
| 636-742 | Gray Summit | Landline | Southwestern Bell |
| 636-744 | Washington | Landline | Southwestern Bell |
| 636-745 | Wright City | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-747 | Pacific | Landline | Onvoy |
| 636-748 | Cedar Hill | Landline | Socket Telecom |
| 636-751 | Valley Park | Wireless | Verizon |
| 636-753 | Portage Des Sioux | Landline | Southwestern Bell |
| 636-754 | Saint Charles | Landline | XO Communications |
| 636-755 | O Fallon | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-757 | Saint Louis | Landline | Windstream Nuvox Missouri |
| 636-758 | Saint Clair | Landline | Fractel |
| 636-764 | Fenton | Landline | Level 3 Communications |
| 636-773 | Saint Charles | Landline | XO Communications |
| 636-775 | Troy | Landline | Charter Fiberlink |
| 636-777 | Saint Louis | Landline | Fusion Cloud Services |
| 636-778 | Chesterfield | Landline | Charter Fiberlink |
| 636-779 | Saint Louis | Landline | Windstream Nuvox Missouri |
| 636-782 | New Haven | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-787 | Chesterfield | Landline | XO Communications |
| 636-789 | Hillsboro | Landline | Southwestern Bell |
| 636-791 | Wright City | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-793 | Saint Charles | Landline | Mcimetro Access Transmission Services |
| 636-794 | Saint Charles | Landline | XO Communications |
| 636-795 | Saint Charles | Wireless | New Cingular Wireless |
| 636-797 | Hillsboro | Landline | Southwestern Bell |
| 636-798 | Defiance | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-800 | Saint Charles | Landline | Onvoy |
| 636-812 | Chesterfield | Landline | Mcleodusa Telecommunication Services |
| 636-818 | Washington | Wireless | |
| 636-821 | Wildwood | Landline | Windstream Nuvox Missouri |
| 636-825 | Valley Park | Landline | Southwestern Bell |
| 636-827 | Valley Park | Landline | Southwestern Bell |
| 636-828 | Wentzville | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-829 | House Springs | Wireless | T-Mobile |
| 636-837 | Pevely | Landline | Ton80 Communications |
| 636-841 | Wentzville | Wireless | T-Mobile |
| 636-849 | Saint Peters | Wireless | T-Mobile |
| 636-851 | Saint Charles | Landline | Southwestern Bell |
| 636-856 | Wentzville | Landline | Charter Fiberlink |
| 636-861 | Valley Park | Landline | Southwestern Bell |
| 636-865 | Hillsboro | Landline | Teleport Communications America |
| 636-866 | Saint Charles | Landline | Mcimetro Access Transmission Services |
| 636-875 | Saint Peters | Landline | Windstream Nuvox Missouri |
| 636-887 | Wentzville | Landline | Charter Fiberlink |
| 636-888 | Saint Clair | Landline | Peerless Network Of Missouri |
| 636-891 | Valley Park | Landline | Southwestern Bell |
| 636-893 | Saint Louis | Landline | Mcimetro Access Transmission Services |
| 636-896 | Saint Charles | Landline | Southwestern Bell |
| 636-898 | Chesterfield | Landline | XO Communications |
| 636-899 | Portage Des Sioux | Landline | Southwestern Bell |
| 636-900 | Washington | Landline | Onvoy |
| 636-916 | Saint Charles | Landline | Southwestern Bell |
| 636-922 | Saint Charles | Landline | Southwestern Bell |
| 636-923 | Saint Louis | Landline | Windstream Nuvox Missouri |
| 636-925 | Saint Charles | Landline | Southwestern Bell |
| 636-926 | Saint Charles | Landline | Southwestern Bell |
| 636-928 | Saint Charles | Landline | Southwestern Bell |
| 636-931 | Herculaneum | Landline | Southwestern Bell |
| 636-932 | New Haven | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-933 | Herculaneum | Landline | Southwestern Bell |
| 636-936 | Saint Charles | Landline | Southwestern Bell |
| 636-937 | Herculaneum | Landline | Southwestern Bell |
| 636-938 | Eureka | Landline | Southwestern Bell |
| 636-939 | Saint Charles | Landline | Southwestern Bell |
| 636-940 | Saint Charles | Landline | Southwestern Bell |
| 636-942 | Imperial | Landline | Southwestern Bell |
| 636-944 | Hillsboro | Landline | Southwestern Bell |
| 636-946 | Saint Charles | Landline | Southwestern Bell |
| 636-947 | Saint Charles | Landline | Southwestern Bell |
| 636-948 | Imperial | Landline | Southwestern Bell |
| 636-949 | Saint Charles | Landline | Southwestern Bell |
| 636-970 | Saint Peters | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-978 | Saint Peters | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-980 | Saint Peters | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-987 | Defiance | Landline | Centurytel Missouri Llc (southwest)dba CenturyLink |
| 636-999 | Pacific | Landline | Onvoy |