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 |
|---|---|---|---|---|---|---|---|
| 2006-02-22 | 281-323-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| 2006-02-22 | 281-683-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2006-02-21 | 281-385-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | MONTBLVIEU | TX |
| 2006-02-21 | 281-576-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | MONTBLVIEU | TX |
| 2006-02-21 | 281-576-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | MONTBLVIEU | TX |
| 2006-02-17 | 281-841-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-02-17 | 281-841-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-02-17 | 281-841-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-02-17 | 281-841-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-02-17 | 281-841-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-02-17 | 281-841-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-02-16 | 281-372-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | HSTNSUBURB | TX |
| 2006-02-08 | 281-258-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| 2006-02-08 | 281-258-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| 2006-02-08 | 281-454-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2006-02-01 | 281-245-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ALVIN | TX |
| 2006-02-01 | 281-402-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LA PORTE | TX |
| 2006-02-01 | 281-581-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LIVERPOOL | TX |
| 2006-01-25 | 281-881-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-25 | 281-881-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-25 | 281-881-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-25 | 281-881-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-25 | 281-881-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-25 | 281-881-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-25 | 281-881-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-25 | 281-881-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-25 | 281-881-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-25 | 281-881-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-18 | 281-406-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| 2006-01-18 | 281-746-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CYPRESS | TX |
| 2006-01-17 | 281-841-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-17 | 281-841-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-06 | 281-841-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-01-06 | 281-841-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2005-12-30 | 281-210-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| 2005-12-30 | 281-898-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | APOLLO | TX |
| 2005-12-22 | 281-761-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | CLEVELAND | TX |
| 2005-12-21 | 281-683-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2005-12-21 | 281-691-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2005-12-21 | 281-691-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2005-12-20 | 281-678-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | DICKINSON | TX |
| 2005-12-20 | 281-678-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | DICKINSON | TX |
| 2005-12-19 | 281-954-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | APOLLO | TX |
| 2005-12-16 | 281-573-6XXX | 6000–6999 | Assigned | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | BEACH CITY | TX |
| 2005-12-16 | 281-691-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2005-12-16 | 281-691-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2005-12-12 | 281-758-0XXX | 0000–0999 | Assigned | SOUTHWESTERN BELL | 9533 | CYPRESS | TX |
| 2005-12-12 | 281-758-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | CYPRESS | TX |
| 2005-12-12 | 281-758-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | CYPRESS | TX |
| 2005-12-06 | 281-305-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | PINEHURST | 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.