All assignees
800 prefixes in 281 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 281-800 | HOUSTON | 177F | — | — |
| 281-801 | SPRING | 177F | — | Yes |
| 281-802 | HOUSTON | 5562 | — | Yes |
| 281-803 | TOMBALL | 7670 | — | Yes |
| 281-804 | HOUSTON | 5562 | — | Yes |
| 281-805 | HSTNSUBURB | 903C | 2022-04-28 | Yes |
| 281-806 | CLEVELAND | 6534 | 2006-12-18 | Yes |
| 281-807 | SATSUMA | 9533 | — | — |
| 281-808 | APOLLO | 5562 | — | Yes |
| 281-809 | HSTNSUBURB | 7239 | — | Yes |
| 281-810 | HSTNSUBURB | 9533 | — | Yes |
| 281-811 | XXXXXXXXXX | MULT | — | — |
| 281-812 | HUMBLE | 2114 | — | — |
| 281-813 | HOUSTON | 6534 | — | — |
| 281-814 | HOUSTON | 6534 | — | — |
| 281-815 | LANGHAMCRK | 7239 | — | Yes |
| 281-816 | FRIENDSWD | 7074 | — | Yes |
| 281-817 | DEER PARK | 7239 | — | Yes |
| 281-818 | HSTNSUBURB | 6701 | — | Yes |
| 281-819 | FRIENDSWD | 7239 | — | Yes |
| 281-820 | HSTNSUBURB | 9533 | — | — |
| 281-821 | WESTFIELD | 9533 | — | — |
| 281-822 | HOUSTON | 903C | — | — |
| 281-823 | APOLLO | 7074 | — | Yes |
| 281-824 | ALVIN | 9533 | — | Yes |
| 281-825 | SPRING | 9533 | — | Yes |
| 281-826 | TOMBALL | 9533 | — | Yes |
| 281-827 | HOUSTON | 6701 | — | — |
| 281-828 | BARKER | 7670 | — | Yes |
| 281-829 | BARKER | 9533 | — | Yes |
| 281-830 | HSTNSUBURB | 5562 | — | Yes |
| 281-831 | HSTNSUBURB | 6701 | — | Yes |
| 281-832 | HOUSTON | 6506 | 2007-11-27 | Yes |
| 281-833 | HOUSTON | 903C | — | Yes |
| 281-834 | BAYTOWN | 4344 | — | — |
| 281-835 | HSTNSUBURB | 9533 | — | Yes |
| 281-836 | BAMMEL | 7138 | — | Yes |
| 281-837 | BAYTOWN | 4344 | — | Yes |
| 281-838 | BAYTOWN | 4344 | — | Yes |
| 281-839 | BAYTOWN | 4344 | — | Yes |
| 281-840 | HOUSTON | 6506 | 2006-07-25 | Yes |
| 281-841 | HOUSTON | 6506 | 2006-01-04 | Yes |
| 281-842 | LA PORTE | 9533 | — | Yes |
| 281-843 | HIGHLANDS | 4344 | — | Yes |
| 281-844 | HOUSTON | 6534 | — | — |
| 281-845 | ARCOLA | 7074 | — | Yes |
| 281-846 | HOUSTON | 6701 | — | Yes |
| 281-847 | HSTNSUBURB | 9533 | — | — |
| 281-848 | HSTNSUBURB | 7138 | — | Yes |
| 281-849 | LANGHAMCRK | 7074 | — | Yes |
| 281-850 | HSTNSUBURB | 5562 | — | Yes |
| 281-851 | HOUSTON | 6534 | — | — |
| 281-852 | HUMBLE | 2114 | — | — |
| 281-853 | APOLLO | 9533 | — | Yes |
| 281-854 | HSTNSUBURB | 7074 | — | Yes |
| 281-855 | LANGHAMCRK | 9533 | — | — |
| 281-856 | LANGHAMCRK | 9533 | — | — |
| 281-857 | HOUSTON | 6114 | 2005-03-14 | Yes |
| 281-858 | LANGHAMCRK | 9533 | — | Yes |
| 281-859 | LANGHAMCRK | 9533 | — | — |
| 281-860 | CHANNELVW | 9533 | — | Yes |
| 281-861 | LANGHAMCRK | 9533 | — | Yes |
| 281-862 | CHANNELVW | 9533 | — | Yes |
| 281-863 | SPRING | 9533 | — | Yes |
| 281-864 | CHANNELVW | 9533 | — | Yes |
| 281-865 | HOUSTON | 5562 | 2007-06-22 | Yes |
| 281-866 | BAMMEL | 9533 | — | Yes |
| 281-867 | LA PORTE | 9533 | — | Yes |
| 281-868 | BAYTOWN | 6506 | 2020-10-02 | Yes |
| 281-869 | WESTFIELD | 7074 | — | Yes |
| 281-870 | HSTNSUBURB | 9533 | — | Yes |
| 281-871 | BAMMEL | 9533 | — | Yes |
| 281-872 | BAMMEL | 9533 | — | Yes |
| 281-873 | BAMMEL | 9533 | — | — |
| 281-874 | BAMMEL | 9533 | — | — |
| 281-875 | BAMMEL | 9533 | — | Yes |
| 281-876 | BAMMEL | 9533 | — | Yes |
| 281-877 | BAMMEL | 9533 | — | Yes |
| 281-878 | HSTNSUBURB | 9533 | — | Yes |
| 281-879 | HSTNSUBURB | 9533 | — | — |
| 281-880 | BAMMEL | 9533 | — | — |
| 281-881 | HOUSTON | 6506 | 2006-01-24 | Yes |
| 281-882 | SPRING | 9533 | — | Yes |
| 281-883 | HUMBLE | 7074 | — | Yes |
| 281-884 | DEER PARK | 9533 | — | Yes |
| 281-885 | BAMMEL | 7138 | — | Yes |
| 281-886 | HSTNSUBURB | 7239 | — | Yes |
| 281-887 | SATSUMA | 7074 | 2010-04-22 | Yes |
| 281-888 | HOUSTON | 6114 | 2007-06-07 | Yes |
| 281-889 | HOUSTON | 6506 | 2007-05-04 | Yes |
| 281-890 | SATSUMA | 9533 | — | — |
| 281-891 | BAMMEL | 9533 | — | Yes |
| 281-892 | HSTNSUBURB | 7239 | — | Yes |
| 281-893 | BAMMEL | 9533 | — | — |
| 281-894 | SATSUMA | 9533 | — | — |
| 281-895 | BAMMEL | 9533 | — | Yes |
| 281-896 | HSTNSUBURB | 5562 | 2007-08-03 | Yes |
| 281-897 | SATSUMA | 9533 | — | — |
| 281-898 | APOLLO | 7138 | 2002-01-07 | Yes |
| 281-899 | HSTNSUBURB | 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.