SOUTHWESTERN BELL
470 prefixes in 713 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 713-723 | HOUSTON | 9533 | — | — |
| 713-726 | HOUSTON | 9533 | — | Yes |
| 713-728 | HOUSTON | 9533 | — | Yes |
| 713-729 | HOUSTON | 9533 | — | — |
| 713-730 | HOUSTON | 9533 | — | Yes |
| 713-731 | HOUSTON | 9533 | 2001-04-19 | Yes |
| 713-732 | HOUSTON | 9533 | 2001-04-19 | Yes |
| 713-733 | HOUSTON | 9533 | 2001-04-19 | — |
| 713-734 | HOUSTON | 9533 | 2001-04-19 | — |
| 713-735 | HOUSTON | 9533 | — | — |
| 713-737 | HOUSTON | 9533 | — | Yes |
| 713-738 | HOUSTON | 9533 | 2001-04-19 | — |
| 713-739 | HOUSTON | 9533 | — | Yes |
| 713-740 | HOUSTON | 9533 | — | — |
| 713-741 | HOUSTON | 9533 | — | — |
| 713-742 | HOUSTON | 9533 | — | Yes |
| 713-743 | HOUSTON | 9533 | — | — |
| 713-744 | HOUSTON | 9533 | — | — |
| 713-745 | HOUSTON | 9533 | — | — |
| 713-746 | HOUSTON | 9533 | — | — |
| 713-747 | HOUSTON | 9533 | — | — |
| 713-748 | HOUSTON | 9533 | — | Yes |
| 713-749 | HOUSTON | 9533 | — | — |
| 713-750 | HOUSTON | 9533 | — | Yes |
| 713-751 | HOUSTON | 9533 | — | Yes |
| 713-752 | HOUSTON | 9533 | — | — |
| 713-753 | HOUSTON | 9533 | — | — |
| 713-754 | HOUSTON | 9533 | — | Yes |
| 713-755 | HOUSTON | 9533 | — | — |
| 713-756 | HOUSTON | 9533 | — | — |
| 713-757 | HOUSTON | 9533 | — | Yes |
| 713-758 | HOUSTON | 9533 | — | Yes |
| 713-759 | HOUSTON | 9533 | — | — |
| 713-767 | HOUSTON | 9533 | — | — |
| 713-770 | HOUSTON | 9533 | — | Yes |
| 713-771 | HOUSTON | 9533 | — | — |
| 713-772 | HOUSTON | 9533 | — | — |
| 713-773 | HOUSTON | 9533 | — | — |
| 713-774 | HOUSTON | 9533 | — | — |
| 713-776 | HOUSTON | 9533 | — | — |
| 713-777 | HOUSTON | 9533 | — | — |
| 713-778 | HOUSTON | 9533 | — | — |
| 713-779 | HOUSTON | 9533 | — | Yes |
| 713-780 | HOUSTON | 9533 | — | — |
| 713-781 | HOUSTON | 9533 | — | — |
| 713-782 | HOUSTON | 9533 | — | — |
| 713-783 | HOUSTON | 9533 | — | — |
| 713-784 | HOUSTON | 9533 | — | — |
| 713-785 | HOUSTON | 9533 | — | — |
| 713-787 | HOUSTON | 9533 | — | — |
| 713-788 | HOUSTON | 9533 | — | Yes |
| 713-789 | HOUSTON | 9533 | — | — |
| 713-790 | HOUSTON | 9533 | — | — |
| 713-791 | HOUSTON | 9533 | — | Yes |
| 713-792 | HOUSTON | 9533 | — | — |
| 713-793 | HOUSTON | 9533 | — | Yes |
| 713-794 | HOUSTON | 9533 | — | Yes |
| 713-795 | HOUSTON | 9533 | — | — |
| 713-796 | HOUSTON | 9533 | — | — |
| 713-797 | HOUSTON | 9533 | — | Yes |
| 713-798 | HOUSTON | 9533 | — | — |
| 713-799 | HOUSTON | 9533 | — | Yes |
| 713-802 | HOUSTON | 9533 | — | — |
| 713-803 | HOUSTON | 9533 | — | Yes |
| 713-807 | HOUSTON | 9533 | — | Yes |
| 713-808 | HOUSTON | 9533 | — | Yes |
| 713-812 | HOUSTON | 9533 | — | — |
| 713-827 | HOUSTON | 9533 | — | — |
| 713-831 | HOUSTON | 9533 | — | — |
| 713-834 | HOUSTON | 9533 | — | Yes |
| 713-836 | HOUSTON | 9533 | 2010-12-16 | Yes |
| 713-837 | HOUSTON | 9533 | — | Yes |
| 713-838 | HOUSTON | 9533 | — | Yes |
| 713-839 | HOUSTON | 9533 | — | Yes |
| 713-840 | HOUSTON | 9533 | — | — |
| 713-842 | HOUSTON | 9533 | — | Yes |
| 713-843 | HOUSTON | 9533 | — | Yes |
| 713-844 | HOUSTON | 9533 | — | Yes |
| 713-845 | HOUSTON | 9533 | — | — |
| 713-847 | HOUSTON | 9533 | — | — |
| 713-849 | HSTNSUBURB | 9533 | — | — |
| 713-850 | HOUSTON | 9533 | — | — |
| 713-852 | HOUSTON | 9533 | — | Yes |
| 713-853 | HOUSTON | 9533 | — | Yes |
| 713-856 | HSTNSUBURB | 9533 | — | — |
| 713-861 | HOUSTON | 9533 | — | — |
| 713-862 | HOUSTON | 9533 | — | — |
| 713-863 | HOUSTON | 9533 | — | Yes |
| 713-864 | HOUSTON | 9533 | — | — |
| 713-865 | HOUSTON | 9533 | — | Yes |
| 713-866 | HOUSTON | 9533 | — | — |
| 713-867 | HOUSTON | 9533 | — | — |
| 713-868 | HOUSTON | 9533 | — | — |
| 713-869 | HOUSTON | 9533 | — | — |
| 713-871 | HOUSTON | 9533 | — | — |
| 713-873 | HOUSTON | 9533 | — | Yes |
| 713-874 | HOUSTON | 9533 | — | Yes |
| 713-877 | HOUSTON | 9533 | — | — |
| 713-878 | HOUSTON | 9533 | — | Yes |
| 713-879 | WESTFIELD | 9533 | 2008-03-14 | 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.