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 |
|---|---|---|---|---|---|---|---|
| 2015-12-23 | 346-220-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | SPRING | TX |
| 2015-12-23 | 346-229-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-12-23 | 346-312-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-12-23 | 346-312-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-12-23 | 346-312-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-12-23 | 346-312-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-12-23 | 346-313-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-12-23 | 346-313-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-12-23 | 346-314-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SATSUMA | TX |
| 2015-12-22 | 346-616-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HUMBLE | TX |
| 2015-12-22 | 346-617-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | DICKINSON | TX |
| 2015-12-22 | 346-617-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | DICKINSON | TX |
| 2015-12-22 | 346-831-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | SPRING | TX |
| 2015-12-21 | 346-205-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANGHAMCRK | TX |
| 2015-12-21 | 346-205-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANGHAMCRK | TX |
| 2015-12-21 | 346-205-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANGHAMCRK | TX |
| 2015-12-21 | 346-205-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANGHAMCRK | TX |
| 2015-12-21 | 346-205-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANGHAMCRK | TX |
| 2015-12-17 | 346-319-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2015-12-17 | 346-319-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2015-12-17 | 346-319-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2015-12-17 | 346-319-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2015-12-16 | 346-307-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | KATY | TX |
| 2015-12-16 | 346-316-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2015-12-16 | 346-316-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2015-12-16 | 346-316-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2015-12-16 | 346-316-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2015-12-16 | 346-316-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2015-12-16 | 346-316-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2015-12-16 | 346-316-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2015-12-16 | 346-316-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2015-12-15 | 346-314-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | SATSUMA | TX |
| 2015-12-15 | 346-770-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | BAMMEL | TX |
| 2015-12-15 | 346-770-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | BAMMEL | TX |
| 2015-12-15 | 346-831-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SPRING | TX |
| 2015-12-10 | 346-814-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| 2015-12-10 | 346-814-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| 2015-12-10 | 346-818-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | CYPRESS | TX |
| 2015-12-10 | 346-818-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | CYPRESS | TX |
| 2015-12-10 | 346-818-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | CYPRESS | TX |
| 2015-12-09 | 346-222-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | LA PORTE | TX |
| 2015-12-09 | 346-239-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | RICHMNRNBG | TX |
| 2015-12-09 | 346-304-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | STAFFORD | TX |
| 2015-12-09 | 346-304-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | STAFFORD | TX |
| 2015-12-09 | 346-304-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | STAFFORD | TX |
| 2015-12-09 | 346-309-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SUGAR LAND | TX |
| 2015-12-09 | 346-309-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SUGAR LAND | TX |
| 2015-12-09 | 346-309-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SUGAR LAND | TX |
| 2015-12-09 | 346-309-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SUGAR LAND | TX |
| 2015-12-09 | 346-309-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SUGAR LAND | 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.