SOUTHWESTERN BELL
281 prefixes in 210 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 210-666 | SANANTONIO | 9533 | — | Yes |
| 210-667 | SANANTONIO | 9533 | — | Yes |
| 210-670 | SANANTONIO | 9533 | — | Yes |
| 210-673 | SANANTONIO | 9533 | — | — |
| 210-674 | SANANTONIO | 9533 | — | Yes |
| 210-675 | SANANTONIO | 9533 | — | Yes |
| 210-677 | SANANTONIO | 9533 | — | Yes |
| 210-678 | SANANTONIO | 9533 | — | Yes |
| 210-679 | SANANTONIO | 9533 | — | Yes |
| 210-680 | SANANTONIO | 9533 | — | — |
| 210-681 | SANANTONIO | 9533 | — | — |
| 210-682 | SANANTONIO | 9533 | — | Yes |
| 210-684 | SANANTONIO | 9533 | — | — |
| 210-687 | SANANTONIO | 9533 | — | Yes |
| 210-688 | SANANTONIO | 9533 | — | Yes |
| 210-690 | SANANTONIO | 9533 | — | — |
| 210-691 | SANANTONIO | 9533 | — | Yes |
| 210-692 | SANANTONIO | 9533 | — | Yes |
| 210-694 | SANANTONIO | 9533 | — | — |
| 210-695 | SANANTONIO | 9533 | — | Yes |
| 210-696 | SANANTONIO | 9533 | — | Yes |
| 210-697 | SANANTONIO | 9533 | — | — |
| 210-698 | SANANTONIO | 9533 | — | — |
| 210-699 | SANANTONIO | 9533 | — | Yes |
| 210-703 | SANANTONIO | 9533 | 2007-08-02 | Yes |
| 210-704 | SANANTONIO | 9533 | — | Yes |
| 210-705 | SANANTONIO | 9533 | — | Yes |
| 210-706 | SANANTONIO | 9533 | — | Yes |
| 210-715 | SANANTONIO | 9533 | — | — |
| 210-720 | SANANTONIO | 9533 | — | — |
| 210-730 | SANANTONIO | 9533 | — | Yes |
| 210-731 | SANANTONIO | 9533 | — | — |
| 210-732 | SANANTONIO | 9533 | — | — |
| 210-733 | SANANTONIO | 9533 | — | — |
| 210-734 | SANANTONIO | 9533 | — | — |
| 210-735 | SANANTONIO | 9533 | — | — |
| 210-736 | SANANTONIO | 9533 | — | Yes |
| 210-737 | SANANTONIO | 9533 | — | Yes |
| 210-738 | SANANTONIO | 9533 | — | Yes |
| 210-751 | SANANTONIO | 9533 | 2014-06-09 | Yes |
| 210-764 | SANANTONIO | 9533 | — | Yes |
| 210-766 | SANANTONIO | 9533 | 2011-05-11 | Yes |
| 210-767 | SANANTONIO | 9533 | 2001-06-25 | Yes |
| 210-768 | SANANTONIO | 9533 | 2011-05-11 | Yes |
| 210-770 | XXXXXXXXXX | 9533 | — | — |
| 210-785 | SANANTONIO | 9533 | — | Yes |
| 210-804 | SANANTONIO | 9533 | — | — |
| 210-805 | SANANTONIO | 9533 | — | Yes |
| 210-820 | SANANTONIO | 9533 | — | — |
| 210-821 | SANANTONIO | 9533 | — | — |
| 210-822 | SANANTONIO | 9533 | — | — |
| 210-824 | SANANTONIO | 9533 | — | — |
| 210-826 | SANANTONIO | 9533 | — | — |
| 210-828 | SANANTONIO | 9533 | — | — |
| 210-829 | SANANTONIO | 9533 | — | — |
| 210-832 | SANANTONIO | 9533 | — | — |
| 210-841 | SANANTONIO | 9533 | — | — |
| 210-856 | SANANTONIO | 9533 | — | — |
| 210-871 | SANANTONIO | 9533 | — | Yes |
| 210-877 | SANANTONIO | 9533 | — | Yes |
| 210-882 | SANANTONIO | 9533 | — | Yes |
| 210-886 | SANANTONIO | 9533 | — | Yes |
| 210-921 | SANANTONIO | 9533 | — | — |
| 210-922 | SANANTONIO | 9533 | — | — |
| 210-923 | SANANTONIO | 9533 | — | Yes |
| 210-924 | SANANTONIO | 9533 | — | — |
| 210-927 | SANANTONIO | 9533 | — | — |
| 210-928 | SANANTONIO | 9533 | — | Yes |
| 210-930 | SANANTONIO | 9533 | — | — |
| 210-932 | SANANTONIO | 9533 | — | Yes |
| 210-936 | SANANTONIO | 9533 | 2018-10-22 | Yes |
| 210-938 | SANANTONIO | 9533 | — | — |
| 210-945 | SANANTONIO | 9533 | — | — |
| 210-946 | SANANTONIO | 9533 | — | Yes |
| 210-949 | SANANTONIO | 9533 | — | — |
| 210-967 | SANANTONIO | 9533 | — | Yes |
| 210-977 | SANANTONIO | 9533 | — | Yes |
| 210-978 | SANANTONIO | 9533 | — | Yes |
| 210-979 | SANANTONIO | 9533 | — | Yes |
| 210-989 | SANANTONIO | 9533 | — | Yes |
| 210-999 | SANANTONIO | 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.