NumberResearchRecent thousands-block assignments
11 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-02-11 | 281-671-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SATSUMA | TX |
| 2010-02-11 | 281-671-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SATSUMA | TX |
| 2010-02-11 | 281-673-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BAMMEL | TX |
| 2010-02-11 | 281-716-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BAMMEL | TX |
| 2010-02-11 | 281-786-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | APOLLO | TX |
| 2010-02-11 | 281-826-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | TOMBALL | TX |
| 2010-02-11 | 281-826-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | TOMBALL | TX |
| 2010-02-11 | 281-826-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | TOMBALL | TX |
| 2010-02-11 | 281-836-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BAMMEL | TX |
| 2010-02-11 | 281-849-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LANGHAMCRK | TX |
| 2010-02-11 | 281-849-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LANGHAMCRK | TX |
| 2010-02-11 | 281-849-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LANGHAMCRK | TX |
| 2010-02-02 | 281-896-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| 2010-02-02 | 281-896-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| 2010-02-02 | 281-901-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2010-02-02 | 281-901-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2010-02-02 | 281-901-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HSTNSUBURB | TX |
| 2010-02-02 | 281-901-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HSTNSUBURB | TX |
| 2010-02-02 | 281-901-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2010-02-02 | 281-901-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2010-02-02 | 281-901-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2010-01-19 | 281-713-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HUMBLE | TX |
| 2010-01-15 | 281-202-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | RICHMNRNBG | TX |
| 2010-01-12 | 281-601-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PORTER | TX |
| 2010-01-12 | 281-601-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PORTER | TX |
| 2010-01-08 | 281-673-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2010-01-08 | 281-673-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2010-01-08 | 281-891-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2010-01-08 | 281-912-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2009-12-29 | 281-402-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | LA PORTE | TX |
| 2009-12-29 | 281-661-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2009-12-29 | 281-661-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2009-12-29 | 281-846-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2009-12-29 | 281-936-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2009-12-15 | 281-676-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BARKER | TX |
| 2009-12-15 | 281-846-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HOUSTON | TX |
| 2009-12-11 | 281-746-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CYPRESS | TX |
| 2009-12-11 | 281-862-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | CHANNELVW | TX |
| 2009-12-04 | 281-462-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | CROSBY | TX |
| 2009-12-01 | 281-809-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HSTNSUBURB | TX |
| 2009-11-24 | 281-673-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | BAMMEL | TX |
| 2009-11-18 | 281-846-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2009-11-12 | 281-397-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BAMMEL | TX |
| 2009-11-03 | 281-815-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LANGHAMCRK | TX |
| 2009-11-02 | 281-746-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | CYPRESS | TX |
| 2009-11-02 | 281-746-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | CYPRESS | TX |
| 2009-10-30 | 281-202-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | RICHMNRNBG | TX |
| 2009-10-28 | 281-824-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | ALVIN | TX |
| 2009-10-22 | 281-846-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2009-10-22 | 281-846-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.