SOUTHWESTERN BELL
470 prefixes in 713 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 713-880 | HOUSTON | 9533 | — | — |
| 713-881 | HOUSTON | 9533 | — | Yes |
| 713-884 | HOUSTON | 9533 | — | Yes |
| 713-885 | HOUSTON | 9533 | — | Yes |
| 713-888 | HOUSTON | 9533 | — | — |
| 713-889 | HOUSTON | 9533 | 2004-10-07 | — |
| 713-890 | HOUSTON | 9533 | — | Yes |
| 713-892 | HOUSTON | 9533 | — | Yes |
| 713-895 | HOUSTON | 9533 | — | — |
| 713-896 | HSTNSUBURB | 9533 | — | — |
| 713-897 | SPRING | 9533 | 2009-01-20 | Yes |
| 713-909 | HSTNSUBURB | 9533 | 2010-11-12 | Yes |
| 713-910 | HOUSTON | 9533 | — | — |
| 713-914 | HOUSTON | 9533 | — | — |
| 713-917 | HOUSTON | 9533 | — | — |
| 713-918 | HOUSTON | 9533 | — | Yes |
| 713-920 | HOUSTON | 9533 | — | Yes |
| 713-921 | HOUSTON | 9533 | — | — |
| 713-923 | HOUSTON | 9533 | — | Yes |
| 713-924 | HOUSTON | 9533 | — | Yes |
| 713-926 | HOUSTON | 9533 | — | Yes |
| 713-928 | HOUSTON | 9533 | — | Yes |
| 713-932 | HOUSTON | 9533 | — | — |
| 713-934 | HOUSTON | 9533 | — | — |
| 713-935 | HOUSTON | 9533 | — | Yes |
| 713-937 | HSTNSUBURB | 9533 | — | — |
| 713-939 | HOUSTON | 9533 | — | — |
| 713-940 | HOUSTON | 9533 | — | Yes |
| 713-941 | HOUSTON | 9533 | — | Yes |
| 713-942 | HOUSTON | 9533 | — | — |
| 713-943 | HOUSTON | 9533 | — | — |
| 713-944 | HOUSTON | 9533 | — | — |
| 713-945 | HOUSTON | 9533 | — | — |
| 713-946 | HOUSTON | 9533 | — | — |
| 713-947 | HOUSTON | 9533 | — | — |
| 713-948 | HOUSTON | 9533 | — | — |
| 713-951 | HOUSTON | 9533 | — | — |
| 713-952 | HOUSTON | 9533 | — | — |
| 713-953 | HOUSTON | 9533 | — | — |
| 713-954 | HOUSTON | 9533 | — | — |
| 713-956 | HOUSTON | 9533 | — | — |
| 713-957 | HOUSTON | 9533 | — | Yes |
| 713-960 | HOUSTON | 9533 | — | Yes |
| 713-961 | HOUSTON | 9533 | — | — |
| 713-963 | HOUSTON | 9533 | — | — |
| 713-964 | HOUSTON | 9533 | — | — |
| 713-965 | HOUSTON | 9533 | — | Yes |
| 713-966 | HOUSTON | 9533 | — | Yes |
| 713-967 | HOUSTON | 9533 | — | — |
| 713-968 | HOUSTON | 9533 | — | — |
| 713-970 | HOUSTON | 9533 | — | Yes |
| 713-972 | HOUSTON | 9533 | — | Yes |
| 713-973 | HOUSTON | 9533 | — | — |
| 713-974 | HOUSTON | 9533 | — | — |
| 713-975 | HOUSTON | 9533 | — | — |
| 713-977 | HOUSTON | 9533 | — | — |
| 713-978 | HOUSTON | 9533 | — | Yes |
| 713-981 | HOUSTON | 9533 | — | — |
| 713-982 | HOUSTON | 9533 | — | — |
| 713-983 | HSTNSUBURB | 9533 | — | — |
| 713-984 | HOUSTON | 9533 | — | Yes |
| 713-985 | HOUSTON | 9533 | — | Yes |
| 713-987 | HOUSTON | 9533 | — | Yes |
| 713-988 | HOUSTON | 9533 | — | — |
| 713-989 | HOUSTON | 9533 | — | — |
| 713-991 | HOUSTON | 9533 | — | — |
| 713-993 | HOUSTON | 9533 | — | Yes |
| 713-994 | HOUSTON | 9533 | — | — |
| 713-995 | HOUSTON | 9533 | — | — |
| 713-996 | HOUSTON | 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.