NumberResearchRecent thousands-block assignments
36 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 346
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 |
|---|---|---|---|---|---|---|---|
| 2016-07-19 | 346-352-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2016-07-19 | 346-352-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2016-07-19 | 346-352-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2016-07-19 | 346-706-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PINEHURST | TX |
| 2016-07-19 | 346-706-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PINEHURST | TX |
| 2016-07-19 | 346-706-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PINEHURST | TX |
| 2016-07-19 | 346-762-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | RICHMNRNBG | TX |
| 2016-07-15 | 346-410-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HSTNSUBURB | TX |
| 2016-07-13 | 346-352-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7239 | HOUSTON | TX |
| 2016-07-08 | 346-205-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | LANGHAMCRK | TX |
| 2016-07-08 | 346-258-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | SHELDON | TX |
| 2016-07-08 | 346-258-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | SHELDON | TX |
| 2016-07-08 | 346-258-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | SHELDON | TX |
| 2016-07-06 | 346-241-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2016-07-06 | 346-241-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2016-06-30 | 346-236-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | TOMBALL | TX |
| 2016-06-30 | 346-707-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | VLY LODGE | TX |
| 2016-06-28 | 346-917-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | CHANNELVW | TX |
| 2016-06-28 | 346-917-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | CHANNELVW | TX |
| 2016-06-27 | 346-368-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SUGAR LAND | TX |
| 2016-06-27 | 346-368-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SUGAR LAND | TX |
| 2016-06-27 | 346-757-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | STAFFORD | TX |
| 2016-06-24 | 346-410-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | HSTNSUBURB | TX |
| 2016-06-24 | 346-917-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | CHANNELVW | TX |
| 2016-06-24 | 346-917-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | CHANNELVW | TX |
| 2016-06-23 | 346-235-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BAMMEL | TX |
| 2016-06-23 | 346-301-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SPLENDORA | TX |
| 2016-06-22 | 346-253-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | MANVEL | TX |
| 2016-06-21 | 346-220-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SPRING | TX |
| 2016-06-21 | 346-230-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | APOLLO | TX |
| 2016-06-21 | 346-718-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | HOUSTON | TX |
| 2016-06-20 | 346-248-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PINEHURST | TX |
| 2016-06-20 | 346-262-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2016-06-20 | 346-410-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HSTNSUBURB | TX |
| 2016-06-17 | 346-666-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | CYPRESS | TX |
| 2016-06-10 | 346-412-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CYPRESS | TX |
| 2016-06-07 | 346-205-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LANGHAMCRK | TX |
| 2016-06-07 | 346-235-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BAMMEL | TX |
| 2016-06-07 | 346-251-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BARKER | TX |
| 2016-06-07 | 346-387-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | KATY | TX |
| 2016-06-07 | 346-703-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | PINEHURST | TX |
| 2016-06-07 | 346-718-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2016-06-03 | 346-410-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2016-05-27 | 346-235-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | BAMMEL | TX |
| 2016-05-25 | 346-351-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SPRING | TX |
| 2016-05-25 | 346-410-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HSTNSUBURB | TX |
| 2016-05-23 | 346-954-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DEER PARK | TX |
| 2016-05-20 | 346-236-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | TOMBALL | TX |
| 2016-05-20 | 346-410-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2016-05-20 | 346-410-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 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.