All assignees
800 prefixes in 281 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 281-600 | BARKER | 903C | — | Yes |
| 281-601 | PORTER | 7670 | — | Yes |
| 281-602 | SPRING | 6114 | — | Yes |
| 281-603 | KEMAH | 903C | — | Yes |
| 281-604 | HOUSTON | 9533 | — | — |
| 281-605 | HOUSTON | 6506 | 2006-06-07 | Yes |
| 281-606 | HSTNSUBURB | 903C | — | Yes |
| 281-607 | MANVEL | 7239 | — | Yes |
| 281-608 | HUMBLE | 5562 | 2006-08-18 | Yes |
| 281-609 | SHELDON | 6114 | — | Yes |
| 281-610 | HOUSTON | 6534 | — | — |
| 281-611 | XXXXXXXXXX | MULT | — | — |
| 281-612 | FRIENDSWD | 318J | 2015-08-11 | Yes |
| 281-613 | HOUSTON | 6630 | — | — |
| 281-614 | DICKINSON | 4344 | — | Yes |
| 281-615 | HOUSTON | 6506 | — | — |
| 281-616 | BARKER | 9533 | — | Yes |
| 281-617 | HSTNSUBURB | 903C | — | Yes |
| 281-618 | BAMMEL | 9533 | — | — |
| 281-619 | HSTNSUBURB | 7239 | — | Yes |
| 281-620 | HOUSTON | 6506 | — | — |
| 281-621 | HOUSTON | 6630 | — | — |
| 281-622 | CLEVELAND | 9533 | — | Yes |
| 281-623 | HUMBLE | 6534 | 2017-11-02 | Yes |
| 281-624 | BAMMEL | 318J | 2012-08-21 | Yes |
| 281-625 | LANGHAMCRK | 6506 | 2026-02-06 | Yes |
| 281-626 | ROSHARON | 903C | 2020-07-06 | Yes |
| 281-627 | HOUSTON | 6506 | — | — |
| 281-628 | BAYTOWN | 6701 | — | Yes |
| 281-629 | HOUSTON | 6630 | — | — |
| 281-630 | HOUSTON | 6534 | — | — |
| 281-631 | BAMMEL | 9533 | — | Yes |
| 281-632 | SUGAR LAND | 2147 | — | — |
| 281-633 | RICHMNRNBG | 9533 | — | Yes |
| 281-634 | SUGAR LAND | 2147 | — | — |
| 281-635 | HOUSTON | 6506 | — | Yes |
| 281-636 | HOUSTON | 6506 | — | — |
| 281-637 | SUGAR LAND | 2147 | — | — |
| 281-638 | LANGHAMCRK | 6506 | — | Yes |
| 281-639 | LANGHAMCRK | 6506 | — | — |
| 281-640 | SATSUMA | 6114 | — | Yes |
| 281-641 | HUMBLE | 2114 | — | — |
| 281-642 | HSTNSUBURB | 6701 | 2002-10-18 | Yes |
| 281-643 | MANVEL | 903C | — | Yes |
| 281-644 | KATY | 2072 | — | Yes |
| 281-645 | WESTFIELD | 6114 | — | Yes |
| 281-646 | BARKER | 9533 | — | — |
| 281-647 | BARKER | 9533 | — | — |
| 281-648 | FRIENDSWD | 9533 | — | Yes |
| 281-649 | HSTNSUBURB | 9533 | — | — |
| 281-650 | BAMMEL | 6701 | — | — |
| 281-651 | SPRING | 9533 | — | Yes |
| 281-652 | HOUSTON | 9533 | — | Yes |
| 281-653 | SATSUMA | 7074 | — | Yes |
| 281-654 | BAMMEL | 7138 | 2001-04-27 | Yes |
| 281-655 | TOMBALL | 9533 | — | Yes |
| 281-656 | LANGHAMCRK | 9533 | — | Yes |
| 281-657 | HOUSTON | 7229 | — | Yes |
| 281-658 | HOUSTON | 6534 | — | — |
| 281-659 | CLEVELAND | 9533 | — | Yes |
| 281-660 | HOUSTON | 6534 | — | — |
| 281-661 | HOUSTON | 6114 | — | Yes |
| 281-662 | CHANNELVW | 5562 | 2013-06-18 | Yes |
| 281-663 | BAYTOWN | 4344 | — | — |
| 281-664 | SATSUMA | 903C | — | Yes |
| 281-665 | KATY | 2109 | 2012-09-11 | Yes |
| 281-666 | CROSBY | 7670 | — | Yes |
| 281-667 | APOLLO | 7239 | — | Yes |
| 281-668 | HSTNSUBURB | 7239 | — | Yes |
| 281-669 | HOUSTON | 9533 | 2002-01-28 | Yes |
| 281-670 | HSTNSUBURB | 7239 | — | Yes |
| 281-671 | SATSUMA | 7239 | — | Yes |
| 281-672 | LEAGUECITY | 4344 | — | Yes |
| 281-673 | BAMMEL | 7239 | — | Yes |
| 281-674 | HSTNSUBURB | 7239 | — | Yes |
| 281-675 | BARKER | 9533 | — | Yes |
| 281-676 | BARKER | 7239 | — | Yes |
| 281-677 | HSTNSUBURB | 7239 | — | Yes |
| 281-678 | DICKINSON | 7670 | — | Yes |
| 281-679 | HSTNSUBURB | 9533 | — | — |
| 281-680 | DEER PARK | 903C | — | Yes |
| 281-681 | SPRING | 9533 | — | — |
| 281-682 | HOUSTON | 6534 | — | — |
| 281-683 | BAYTOWN | 6701 | 2001-06-20 | Yes |
| 281-684 | HOUSTON | 6534 | 2001-05-11 | — |
| 281-685 | HOUSTON | 6534 | — | — |
| 281-686 | HOUSTON | 6534 | — | — |
| 281-687 | HOUSTON | 6534 | — | — |
| 281-688 | HIGHLANDS | 7670 | — | Yes |
| 281-689 | SPLENDORA | 9533 | — | — |
| 281-690 | SUGAR LAND | 6534 | 2006-05-15 | Yes |
| 281-691 | BAYTOWN | 7138 | 2004-03-04 | Yes |
| 281-692 | MANVEL | 9533 | — | Yes |
| 281-693 | KATY | 2072 | — | Yes |
| 281-694 | SEABROOK | 903C | — | Yes |
| 281-695 | CHANNELVW | 903C | — | Yes |
| 281-696 | BAMMEL | 6701 | 2020-12-18 | Yes |
| 281-697 | SUGAR LAND | 903C | 2020-12-22 | Yes |
| 281-698 | BARKER | 6114 | — | Yes |
| 281-699 | CROSBY | 903C | 2021-01-04 | 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.