SOUTHWESTERN BELL
40 prefixes in 660 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 660-236 | MARSHALL | 9533 | 2001-05-10 | Yes |
| 660-248 | FAYETTE | 9533 | — | Yes |
| 660-258 | BROOKFIELD | 9533 | — | Yes |
| 660-263 | MOBERLY | 9533 | — | — |
| 660-268 | BROOKFIELD | 9533 | — | Yes |
| 660-269 | MOBERLY | 9533 | — | Yes |
| 660-273 | ARMSTRONG | 9533 | — | Yes |
| 660-338 | GLASGOW | 9533 | — | Yes |
| 660-339 | TRENTON | 9533 | — | Yes |
| 660-347 | LA MONTE | 9533 | — | Yes |
| 660-358 | TRENTON | 9533 | — | Yes |
| 660-359 | TRENTON | 9533 | — | Yes |
| 660-372 | MOBERLY | 9533 | 2001-07-11 | Yes |
| 660-376 | MARCELINE | 9533 | — | Yes |
| 660-379 | DOWNING | 9533 | — | Yes |
| 660-397 | EDINA | 9533 | — | Yes |
| 660-456 | HIGBEE | 9533 | — | Yes |
| 660-457 | LANCASTER | 9533 | — | Yes |
| 660-529 | SLATER | 9533 | — | Yes |
| 660-530 | SEDALIA | 9533 | — | Yes |
| 660-542 | CARROLLTON | 9533 | — | Yes |
| 660-563 | KNOBNOSTER | 9533 | — | Yes |
| 660-586 | NEWFRNKLIN | 9533 | 2001-05-10 | Yes |
| 660-626 | KIRKSVILLE | 9533 | — | Yes |
| 660-627 | KIRKSVILLE | 9533 | — | Yes |
| 660-646 | CHILLICOTH | 9533 | — | — |
| 660-665 | KIRKSVILLE | 9533 | — | — |
| 660-687 | KNOBNOSTER | 9533 | — | Yes |
| 660-707 | CHILLICOTH | 9533 | — | Yes |
| 660-730 | KIRKSVILLE | 9533 | — | Yes |
| 660-752 | CHILLICOTH | 9533 | — | Yes |
| 660-783 | STANBERRY | 9533 | — | Yes |
| 660-785 | KIRKSVILLE | 9533 | — | Yes |
| 660-826 | SEDALIA | 9533 | — | — |
| 660-827 | SEDALIA | 9533 | — | — |
| 660-829 | SEDALIA | 9533 | — | Yes |
| 660-831 | MARSHALL | 9533 | — | Yes |
| 660-848 | NEWFRNKLIN | 9533 | — | Yes |
| 660-882 | BOONVILLE | 9533 | — | Yes |
| 660-886 | MARSHALL | 9533 | — | 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.