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 |
|---|---|---|---|---|---|---|---|
| 2008-02-08 | 281-832-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2008-02-08 | 281-832-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2008-02-08 | 281-832-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2008-02-08 | 281-905-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2008-02-08 | 281-905-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2008-02-07 | 281-902-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2008-02-05 | 281-898-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | APOLLO | TX |
| 2008-02-04 | 281-213-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | CYPRESS | TX |
| 2008-02-01 | 281-547-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | TOMBALL | TX |
| 2008-02-01 | 281-547-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | TOMBALL | TX |
| 2008-02-01 | 281-581-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | LIVERPOOL | TX |
| 2008-02-01 | 281-581-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | LIVERPOOL | TX |
| 2008-02-01 | 281-616-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BARKER | TX |
| 2008-02-01 | 281-616-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BARKER | TX |
| 2008-02-01 | 281-717-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | BARKER | TX |
| 2008-02-01 | 281-919-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | BAMMEL | TX |
| 2008-02-01 | 281-919-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | BAMMEL | TX |
| 2008-01-31 | 281-249-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HSTNSUBURB | TX |
| 2008-01-31 | 281-764-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HUFFMAN | TX |
| 2008-01-31 | 281-962-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SHELDON | TX |
| 2008-01-30 | 281-738-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BEACH CITY | TX |
| 2008-01-30 | 281-738-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BEACH CITY | TX |
| 2008-01-28 | 281-231-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7239 | WESTFIELD | TX |
| 2008-01-28 | 281-617-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HSTNSUBURB | TX |
| 2008-01-28 | 281-656-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7239 | LANGHAMCRK | TX |
| 2008-01-25 | 281-839-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | BAYTOWN | TX |
| 2008-01-22 | 281-248-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BAMMEL | TX |
| 2008-01-22 | 281-401-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | TOMBALL | TX |
| 2008-01-22 | 281-529-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HSTNSUBURB | TX |
| 2008-01-22 | 281-569-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BAMMEL | TX |
| 2008-01-21 | 281-206-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BARKER | TX |
| 2008-01-21 | 281-409-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2008-01-21 | 281-609-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SHELDON | TX |
| 2008-01-21 | 281-738-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BEACH CITY | TX |
| 2008-01-21 | 281-763-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | HOUSTON | TX |
| 2008-01-21 | 281-763-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | HOUSTON | TX |
| 2008-01-21 | 281-764-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HUFFMAN | TX |
| 2008-01-21 | 281-764-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HUFFMAN | TX |
| 2008-01-21 | 281-806-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | CLEVELAND | TX |
| 2008-01-21 | 281-888-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2008-01-21 | 281-907-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SPRING | TX |
| 2008-01-18 | 281-614-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DICKINSON | TX |
| 2008-01-18 | 281-750-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | RICHMNRNBG | TX |
| 2008-01-18 | 281-902-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2008-01-18 | 281-907-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SPRING | TX |
| 2008-01-18 | 281-990-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | APOLLO | TX |
| 2008-01-17 | 281-616-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BARKER | TX |
| 2008-01-17 | 281-779-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2008-01-17 | 281-806-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | CLEVELAND | TX |
| 2008-01-17 | 281-832-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | 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.