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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-04-11 | 346-286-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-04-11 | 346-286-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-04-11 | 346-286-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-04-11 | 346-286-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-04-11 | 346-286-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-04-11 | 346-286-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-04-11 | 346-286-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-04-11 | 346-286-8XXX | 8000–8999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-04-11 | 346-286-9XXX | 9000–9999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2017-04-07 | 346-616-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | HUMBLE | TX |
| 2017-04-03 | 346-313-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2017-04-03 | 346-413-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2017-04-03 | 346-413-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2017-04-03 | 346-413-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2017-04-03 | 346-773-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2017-04-03 | 346-773-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2017-04-03 | 346-774-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2017-04-03 | 346-774-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2017-03-30 | 346-249-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2017-03-30 | 346-249-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2017-03-30 | 346-255-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | CHANNELVW | TX |
| 2017-03-30 | 346-255-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | CHANNELVW | TX |
| 2017-03-30 | 346-255-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | CHANNELVW | TX |
| 2017-03-30 | 346-255-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | CHANNELVW | TX |
| 2017-03-30 | 346-255-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | CHANNELVW | TX |
| 2017-03-29 | 346-227-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2017-03-29 | 346-244-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SATSUMA | TX |
| 2017-03-29 | 346-246-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | TOMBALL | TX |
| 2017-03-29 | 346-420-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SUGAR LAND | TX |
| 2017-03-29 | 346-420-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SUGAR LAND | TX |
| 2017-03-29 | 346-420-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SUGAR LAND | TX |
| 2017-03-29 | 346-420-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SUGAR LAND | TX |
| 2017-03-29 | 346-816-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ARCOLA | TX |
| 2017-03-24 | 346-244-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SATSUMA | TX |
| 2017-03-24 | 346-244-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SATSUMA | TX |
| 2017-03-24 | 346-874-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SUGAR LAND | TX |
| 2017-03-22 | 346-242-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | LANGHAMCRK | TX |
| 2017-03-22 | 346-413-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | SPRING | TX |
| 2017-03-22 | 346-617-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | DICKINSON | TX |
| 2017-03-22 | 346-760-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BARKER | TX |
| 2017-03-22 | 346-803-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | HSTNSUBURB | TX |
| 2017-03-22 | 346-815-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | APOLLO | TX |
| 2017-03-21 | 346-493-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2017-03-21 | 346-493-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2017-03-21 | 346-606-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2017-03-21 | 346-606-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2017-03-21 | 346-606-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2017-03-21 | 346-606-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2017-03-21 | 346-606-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2017-03-21 | 346-606-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | 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.