NumberResearchRecent thousands-block assignments
33 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 |
|---|---|---|---|---|---|---|---|
| 2021-03-23 | 346-667-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KATY | TX |
| 2021-03-23 | 346-667-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KATY | TX |
| 2021-03-23 | 346-799-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CLEVELAND | TX |
| 2021-03-22 | 346-481-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | RICHMNRNBG | TX |
| 2021-03-19 | 346-458-1XXX | 1000–1999 | Assigned | STRATUS NETWORKS | 495J | BEACH CITY | TX |
| 2021-03-17 | 346-362-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | SHELDON | TX |
| 2021-03-17 | 346-362-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | SHELDON | TX |
| 2021-03-17 | 346-421-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | ARCOLA | TX |
| 2021-03-17 | 346-421-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | ARCOLA | TX |
| 2021-03-17 | 346-421-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | ARCOLA | TX |
| 2021-03-16 | 346-338-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | VLY LODGE | TX |
| 2021-03-16 | 346-338-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | VLY LODGE | TX |
| 2021-03-16 | 346-536-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | SATSUMA | TX |
| 2021-03-16 | 346-536-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | SATSUMA | TX |
| 2021-03-16 | 346-536-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | SATSUMA | TX |
| 2021-03-16 | 346-536-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | SATSUMA | TX |
| 2021-03-10 | 346-457-1XXX | 1000–1999 | Assigned | STRATUS NETWORKS | 495J | KATY | TX |
| 2021-03-05 | 346-386-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2021-03-05 | 346-386-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2021-03-05 | 346-633-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DEER PARK | TX |
| 2021-03-05 | 346-633-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DEER PARK | TX |
| 2021-03-05 | 346-633-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DEER PARK | TX |
| 2021-03-04 | 346-488-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | PORTER HTS | TX |
| 2021-02-28 | 346-576-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | BARKER | TX |
| 2021-02-25 | 346-515-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2021-02-25 | 346-515-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | RICHMNRNBG | TX |
| 2021-02-25 | 346-515-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2021-02-25 | 346-515-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2021-02-25 | 346-515-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2021-02-25 | 346-536-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SATSUMA | TX |
| 2021-02-25 | 346-576-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | BARKER | TX |
| 2021-02-25 | 346-633-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | DEER PARK | TX |
| 2021-02-25 | 346-640-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | LANGHAMCRK | TX |
| 2021-02-25 | 346-645-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | TOMBALL | TX |
| 2021-02-23 | 346-466-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | HIGHLANDS | TX |
| 2021-02-23 | 346-477-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | HUMBLE | TX |
| 2021-02-19 | 346-576-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BARKER | TX |
| 2021-02-18 | 346-645-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | TOMBALL | TX |
| 2021-02-17 | 346-633-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | DEER PARK | TX |
| 2021-02-17 | 346-633-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | DEER PARK | TX |
| 2021-02-17 | 346-633-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | DEER PARK | TX |
| 2021-02-17 | 346-645-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | TOMBALL | TX |
| 2021-02-15 | 346-440-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HSTNSUBURB | TX |
| 2021-02-12 | 346-640-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | LANGHAMCRK | TX |
| 2021-02-03 | 346-660-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BAYTOWN | TX |
| 2021-02-03 | 346-660-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BAYTOWN | TX |
| 2021-02-03 | 346-660-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BAYTOWN | TX |
| 2021-02-01 | 346-474-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | FRIENDSWD | TX |
| 2021-02-01 | 346-474-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | FRIENDSWD | TX |
| 2021-02-01 | 346-474-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | FRIENDSWD | TX |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.