NumberResearchRecent thousands-block assignments
33 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 |
|---|---|---|---|---|---|---|---|
| 2017-08-07 | 346-244-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SATSUMA | TX |
| 2017-08-07 | 346-420-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SUGAR LAND | TX |
| 2017-08-07 | 346-420-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SUGAR LAND | TX |
| 2017-08-07 | 346-420-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SUGAR LAND | TX |
| 2017-08-03 | 346-570-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | HSTNSUBURB | TX |
| 2017-07-31 | 346-616-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HUMBLE | TX |
| 2017-07-31 | 346-616-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HUMBLE | TX |
| 2017-07-28 | 346-617-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | DICKINSON | TX |
| 2017-07-25 | 346-242-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | LANGHAMCRK | TX |
| 2017-07-25 | 346-242-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | LANGHAMCRK | TX |
| 2017-07-20 | 346-754-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HSTNSUBURB | TX |
| 2017-07-19 | 346-266-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-19 | 346-266-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-19 | 346-266-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-237-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-237-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-241-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-250-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-250-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-250-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-250-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-265-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-07-18 | 346-265-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-07-18 | 346-265-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-07-18 | 346-265-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-07-18 | 346-265-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-07-18 | 346-320-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-330-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-330-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-330-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-330-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-18 | 346-843-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | RICHMNRNBG | TX |
| 2017-07-17 | 346-264-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BARKER | TX |
| 2017-07-17 | 346-264-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BARKER | TX |
| 2017-07-17 | 346-264-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | BARKER | TX |
| 2017-07-17 | 346-351-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2017-07-17 | 346-351-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2017-07-17 | 346-351-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2017-07-14 | 346-288-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BEACH CITY | TX |
| 2017-07-14 | 346-288-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | BEACH CITY | TX |
| 2017-07-12 | 346-237-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-07-12 | 346-237-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-07-12 | 346-320-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2017-07-07 | 346-246-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TOMBALL | TX |
| 2017-07-07 | 346-246-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TOMBALL | TX |
| 2017-07-07 | 346-754-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2017-07-07 | 346-803-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2017-07-07 | 346-803-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2017-07-07 | 346-803-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2017-07-07 | 346-907-4XXX | 4000–4999 | 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.