SOUTHWESTERN BELL
110 prefixes in 636 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 636-937 | FSSCRSTLCY | 9533 | — | — |
| 636-938 | EUREKA | 9533 | — | Yes |
| 636-939 | HARVESTER | 9533 | — | Yes |
| 636-940 | ST CHARLES | 9533 | — | — |
| 636-942 | ANTONIA | 9533 | — | Yes |
| 636-944 | WARE | 9533 | — | Yes |
| 636-946 | ST CHARLES | 9533 | — | — |
| 636-947 | ST CHARLES | 9533 | — | — |
| 636-948 | ANTONIA | 9533 | — | Yes |
| 636-949 | ST CHARLES | 9533 | — | — |
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.