NumberResearchRecent thousands-block assignments
11 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 281
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-03-05 | 281-957-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | KEMAH | TX |
| 2018-02-05 | 281-369-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | ROSHARON | TX |
| 2018-01-30 | 281-549-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | KEMAH | TX |
| 2018-01-30 | 281-623-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | HUMBLE | TX |
| 2018-01-30 | 281-939-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SPRING | TX |
| 2018-01-30 | 281-939-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SPRING | TX |
| 2018-01-17 | 281-843-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | HIGHLANDS | TX |
| 2017-12-18 | 281-939-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2017-12-18 | 281-939-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2017-12-14 | 281-939-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| 2017-12-14 | 281-939-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| 2017-12-12 | 281-623-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | HUMBLE | TX |
| 2017-12-12 | 281-623-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | HUMBLE | TX |
| 2017-11-20 | 281-623-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | HUMBLE | TX |
| 2017-11-03 | 281-623-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HUMBLE | TX |
| 2017-10-18 | 281-500-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | LANGHAMCRK | TX |
| 2017-10-18 | 281-500-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | LANGHAMCRK | TX |
| 2017-10-18 | 281-939-0XXX | 0000–0999 | Assigned | SOUTHWESTERN BELL | 9533 | SPRING | TX |
| 2017-10-10 | 281-369-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | ROSHARON | TX |
| 2017-09-25 | 281-640-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SATSUMA | TX |
| 2017-08-29 | 281-720-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SATSUMA | TX |
| 2017-08-29 | 281-720-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SATSUMA | TX |
| 2017-07-18 | 281-595-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | ROSHARON | TX |
| 2017-06-20 | 281-282-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | APOLLO | TX |
| 2017-06-20 | 281-524-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | KEMAH | TX |
| 2017-06-07 | 281-343-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | SMITHERSLK | TX |
| 2017-06-06 | 281-306-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | SPLENDORA | TX |
| 2017-06-06 | 281-326-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | KEMAH | TX |
| 2017-06-05 | 281-393-4XXX | 4000–4999 | Assigned | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | LIVERPOOL | TX |
| 2017-06-05 | 281-698-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | BARKER | TX |
| 2017-05-25 | 281-720-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | SATSUMA | TX |
| 2017-05-09 | 281-612-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | FRIENDSWD | TX |
| 2017-05-02 | 281-365-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-05-02 | 281-365-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-05-02 | 281-365-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-05-02 | 281-365-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-05-02 | 281-365-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-05-02 | 281-365-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-05-02 | 281-365-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-05-02 | 281-365-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-05-02 | 281-365-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-05-02 | 281-365-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-05-02 | 281-503-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | PORTER HTS | TX |
| 2017-04-14 | 281-502-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | HIGHLANDS | TX |
| 2017-03-24 | 281-666-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | CROSBY | TX |
| 2017-02-27 | 281-982-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | WESTFIELD | TX |
| 2017-02-15 | 281-612-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | FRIENDSWD | TX |
| 2017-01-12 | 281-272-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | HSTNSUBURB | TX |
| 2016-12-08 | 281-612-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | FRIENDSWD | TX |
| 2016-12-06 | 281-835-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | HSTNSUBURB | TX |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.