SOUTHWESTERN BELL
149 prefixes in 620 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 620-221 | WINFIELD | 9533 | — | — |
| 620-222 | WINFIELD | 9533 | — | Yes |
| 620-223 | FORT SCOTT | 9533 | — | — |
| 620-224 | FORT SCOTT | 9533 | — | Yes |
| 620-225 | DODGE CITY | 9533 | — | — |
| 620-227 | DODGE CITY | 9533 | — | — |
| 620-229 | WINFIELD | 9533 | — | Yes |
| 620-230 | PITTSBURG | 9533 | — | — |
| 620-231 | PITTSBURG | 9533 | — | — |
| 620-232 | PITTSBURG | 9533 | — | Yes |
| 620-234 | STAFFORD | 9533 | — | Yes |
| 620-235 | PITTSBURG | 9533 | — | Yes |
| 620-236 | CHETOPA | 9533 | — | Yes |
| 620-240 | PITTSBURG | 9533 | — | Yes |
| 620-241 | MCPHERSON | 9533 | — | — |
| 620-242 | MCPHERSON | 9533 | — | Yes |
| 620-244 | ERIE | 9533 | — | Yes |
| 620-245 | MCPHERSON | 9533 | — | Yes |
| 620-251 | COFFEYVL | 9533 | — | — |
| 620-252 | COFFEYVL | 9533 | — | Yes |
| 620-254 | ATTICA | 9533 | — | Yes |
| 620-257 | LYONS | 9533 | — | Yes |
| 620-260 | GARDENCITY | 9533 | — | Yes |
| 620-271 | GARDENCITY | 9533 | — | — |
| 620-272 | GARDENCITY | 9533 | — | — |
| 620-273 | COTONWDFLS | 9533 | — | Yes |
| 620-275 | GARDENCITY | 9533 | — | — |
| 620-276 | GARDENCITY | 9533 | — | — |
| 620-277 | GARDENCITY | 9533 | — | Yes |
| 620-285 | LARNED | 9533 | — | — |
| 620-309 | LIBERAL | 9533 | — | Yes |
| 620-325 | NEODESHA | 9533 | — | Yes |
| 620-326 | WELLINGTON | 9533 | — | Yes |
| 620-330 | INDEPNDNCE | 9533 | — | Yes |
| 620-331 | INDEPNDNCE | 9533 | — | — |
| 620-332 | INDEPNDNCE | 9533 | — | Yes |
| 620-336 | CHERRYVALE | 9533 | — | Yes |
| 620-338 | DODGE CITY | 9533 | — | — |
| 620-339 | DODGE CITY | 9533 | — | Yes |
| 620-340 | EMPORIA | 9533 | — | — |
| 620-341 | EMPORIA | 9533 | — | — |
| 620-342 | EMPORIA | 9533 | — | — |
| 620-343 | EMPORIA | 9533 | — | — |
| 620-359 | WELLINGTON | 9533 | — | Yes |
| 620-365 | IOLA | 9533 | — | — |
| 620-374 | HOWARD | 9533 | — | Yes |
| 620-380 | IOLA | 9533 | — | Yes |
| 620-382 | MARION | 9533 | — | Yes |
| 620-392 | HARTFORD | 9533 | — | Yes |
| 620-399 | WELLINGTON | 9533 | — | Yes |
| 620-400 | GREAT BEND | 9533 | 2011-01-13 | Yes |
| 620-408 | DODGE CITY | 9533 | — | Yes |
| 620-412 | EMPORIA | 9533 | 2002-04-04 | Yes |
| 620-417 | LIBERAL | 9533 | 2007-05-23 | Yes |
| 620-421 | PARSONS | 9533 | — | — |
| 620-422 | NICKERSON | 9533 | — | Yes |
| 620-423 | PARSONS | 9533 | — | Yes |
| 620-431 | CHANUTE | 9533 | — | — |
| 620-432 | CHANUTE | 9533 | — | Yes |
| 620-433 | CHANUTE | 9533 | — | Yes |
| 620-441 | ARKANSASCY | 9533 | — | Yes |
| 620-442 | ARKANSASCY | 9533 | — | — |
| 620-446 | ARKANSASCY | 9533 | — | Yes |
| 620-449 | ST PAUL | 9533 | — | Yes |
| 620-450 | PRATT | 9533 | — | Yes |
| 620-464 | COFFEYVL | 9533 | — | Yes |
| 620-473 | HUMBOLDT | 9533 | — | Yes |
| 620-482 | LIBERAL | 9533 | — | Yes |
| 620-501 | MEDICNLODG | 9533 | 2001-06-07 | Yes |
| 620-504 | MCPHERSON | 9533 | 2001-06-07 | Yes |
| 620-507 | WELLINGTON | 9533 | 2001-06-07 | Yes |
| 620-508 | PRATT | 9533 | 2001-06-07 | Yes |
| 620-510 | SUBLETTE | 9533 | 2001-06-08 | Yes |
| 620-532 | KINGMAN | 9533 | — | Yes |
| 620-560 | HUTCHINSON | 9533 | 2002-01-30 | Yes |
| 620-563 | PLAINS | 9533 | — | Yes |
| 620-582 | COLDWATER | 9533 | — | Yes |
| 620-583 | EUREKA | 9533 | — | Yes |
| 620-622 | PROTECTION | 9533 | — | Yes |
| 620-624 | LIBERAL | 9533 | — | — |
| 620-625 | YATES CTR | 9533 | — | Yes |
| 620-626 | LIBERAL | 9533 | — | — |
| 620-628 | CANTON | 9533 | — | Yes |
| 620-629 | LIBERAL | 9533 | — | — |
| 620-646 | FOWLER | 9533 | — | Yes |
| 620-647 | MOLINE | 9533 | — | Yes |
| 620-659 | KINSLEY | 9533 | — | Yes |
| 620-662 | HUTCHINSON | 9533 | — | — |
| 620-663 | HUTCHINSON | 9533 | — | — |
| 620-664 | HUTCHINSON | 9533 | — | Yes |
| 620-665 | HUTCHINSON | 9533 | — | — |
| 620-669 | HUTCHINSON | 9533 | — | — |
| 620-672 | PRATT | 9533 | — | — |
| 620-675 | SUBLETTE | 9533 | — | Yes |
| 620-678 | HAMILTON | 9533 | — | Yes |
| 620-679 | TREECE | 9533 | — | Yes |
| 620-682 | DODGE CITY | 9533 | 2002-09-23 | Yes |
| 620-694 | HUTCHINSON | 9533 | — | — |
| 620-699 | READING | 9533 | — | Yes |
| 620-702 | CHERRYVALE | 9533 | 2001-06-08 | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.