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 |
|---|---|---|---|---|---|---|---|
| 2023-12-21 | 346-759-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | KATY | TX |
| 2023-12-21 | 346-759-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | KATY | TX |
| 2023-12-21 | 346-759-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | KATY | TX |
| 2023-12-21 | 346-759-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | KATY | TX |
| 2023-12-21 | 346-759-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | KATY | TX |
| 2023-12-21 | 346-759-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | KATY | TX |
| 2023-12-21 | 346-759-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | KATY | TX |
| 2023-12-21 | 346-761-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | SATSUMA | TX |
| 2023-12-21 | 346-761-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | SATSUMA | TX |
| 2023-12-21 | 346-761-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | SATSUMA | TX |
| 2023-12-21 | 346-761-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | SATSUMA | TX |
| 2023-12-21 | 346-761-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | SATSUMA | TX |
| 2023-12-21 | 346-761-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | SATSUMA | TX |
| 2023-12-21 | 346-761-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | SATSUMA | TX |
| 2023-12-20 | 346-750-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | HIGHLANDS | TX |
| 2023-12-20 | 346-750-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | HIGHLANDS | TX |
| 2023-12-20 | 346-750-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | HIGHLANDS | TX |
| 2023-12-20 | 346-750-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | HIGHLANDS | TX |
| 2023-12-20 | 346-750-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | HIGHLANDS | TX |
| 2023-12-20 | 346-750-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | HIGHLANDS | TX |
| 2023-12-20 | 346-750-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | HIGHLANDS | TX |
| 2023-12-20 | 346-750-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | HIGHLANDS | TX |
| 2023-12-18 | 346-681-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | SUGAR LAND | TX |
| 2023-12-18 | 346-681-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | SUGAR LAND | TX |
| 2023-12-18 | 346-685-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | HUMBLE | TX |
| 2023-12-18 | 346-685-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | HUMBLE | TX |
| 2023-12-18 | 346-685-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | HUMBLE | TX |
| 2023-12-18 | 346-685-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | HUMBLE | TX |
| 2023-12-18 | 346-685-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | HUMBLE | TX |
| 2023-12-18 | 346-685-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | HUMBLE | TX |
| 2023-12-18 | 346-748-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | BAMMEL | TX |
| 2023-12-18 | 346-748-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | BAMMEL | TX |
| 2023-12-18 | 346-748-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | BAMMEL | TX |
| 2023-12-18 | 346-748-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | BAMMEL | TX |
| 2023-12-18 | 346-748-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | BAMMEL | TX |
| 2023-12-18 | 346-748-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | BAMMEL | TX |
| 2023-12-18 | 346-748-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | BAMMEL | TX |
| 2023-12-18 | 346-748-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | BAMMEL | TX |
| 2023-12-15 | 346-739-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | HOUSTON | TX |
| 2023-12-15 | 346-741-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | HOUSTON | TX |
| 2023-12-15 | 346-741-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | HOUSTON | TX |
| 2023-12-15 | 346-741-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | HOUSTON | TX |
| 2023-12-14 | 346-731-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | CLEVELAND | TX |
| 2023-12-14 | 346-731-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | CLEVELAND | TX |
| 2023-12-14 | 346-731-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | CLEVELAND | TX |
| 2023-12-12 | 346-749-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | BAYTOWN | TX |
| 2023-12-11 | 346-489-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | LA PORTE | TX |
| 2023-12-11 | 346-540-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | SPLENDORA | TX |
| 2023-12-11 | 346-609-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2023-12-11 | 346-733-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANGHAMCRK | 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.