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 |
|---|---|---|---|---|---|---|---|
| 2006-04-18 | 281-234-9XXX | 9000–9999 | Assigned | CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY | 2109 | KATY | TX |
| 2006-04-17 | 281-206-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BARKER | TX |
| 2006-04-17 | 281-213-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | CYPRESS | TX |
| 2006-04-17 | 281-436-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HSTNSUBURB | TX |
| 2006-04-17 | 281-990-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | APOLLO | TX |
| 2006-04-13 | 281-245-3XXX | 3000–3999 | Assigned | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7074 | ALVIN | TX |
| 2006-04-13 | 281-573-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BEACH CITY | TX |
| 2006-04-13 | 281-905-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2006-04-13 | 281-905-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2006-04-13 | 281-905-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2006-04-13 | 281-905-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2006-04-13 | 281-905-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2006-04-11 | 281-203-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SPRING | TX |
| 2006-04-11 | 281-245-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | ALVIN | TX |
| 2006-04-11 | 281-245-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | ALVIN | TX |
| 2006-04-11 | 281-301-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BAMMEL | TX |
| 2006-04-11 | 281-377-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BAMMEL | TX |
| 2006-04-11 | 281-506-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HSTNSUBURB | TX |
| 2006-04-11 | 281-506-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HSTNSUBURB | TX |
| 2006-04-11 | 281-542-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DEER PARK | TX |
| 2006-04-11 | 281-542-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DEER PARK | TX |
| 2006-04-06 | 281-416-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | HSTNSUBURB | TX |
| 2006-04-04 | 281-323-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| 2006-04-03 | 281-763-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2006-03-30 | 281-201-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SUGAR LAND | TX |
| 2006-03-29 | 281-520-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-03-29 | 281-520-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-03-29 | 281-520-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2006-03-17 | 281-644-7XXX | 7000–7999 | Assigned | CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY | 2072 | KATY | TX |
| 2006-03-17 | 281-760-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| 2006-03-15 | 281-779-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2006-03-15 | 281-779-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2006-03-15 | 281-779-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2006-03-15 | 281-779-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2006-03-15 | 281-779-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2006-03-14 | 281-369-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | ROSHARON | TX |
| 2006-03-14 | 281-402-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | LA PORTE | TX |
| 2006-03-13 | 281-853-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | APOLLO | TX |
| 2006-03-13 | 281-853-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | APOLLO | TX |
| 2006-03-13 | 281-898-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | APOLLO | TX |
| 2006-03-13 | 281-954-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | APOLLO | TX |
| 2006-03-10 | 281-860-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | CHANNELVW | TX |
| 2006-03-09 | 281-676-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BARKER | TX |
| 2006-03-09 | 281-815-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LANGHAMCRK | TX |
| 2006-03-08 | 281-725-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | RICHMNRNBG | TX |
| 2006-03-06 | 281-823-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | APOLLO | TX |
| 2006-03-01 | 281-825-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SPRING | TX |
| 2006-02-24 | 281-816-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | FRIENDSWD | TX |
| 2006-02-22 | 281-323-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| 2006-02-22 | 281-323-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | 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.