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 |
|---|---|---|---|---|---|---|---|
| 2017-07-03 | 346-244-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SATSUMA | TX |
| 2017-07-03 | 346-254-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | CYPRESS | TX |
| 2017-07-03 | 346-570-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | HSTNSUBURB | TX |
| 2017-07-03 | 346-570-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | HSTNSUBURB | TX |
| 2017-07-03 | 346-570-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | HSTNSUBURB | TX |
| 2017-07-03 | 346-570-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | HSTNSUBURB | TX |
| 2017-06-30 | 346-237-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2017-06-30 | 346-802-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2017-06-30 | 346-802-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2017-06-26 | 346-250-8XXX | 8000–8999 | Assigned | VONAGE AMERICA LLC | 197D | HOUSTON | TX |
| 2017-06-20 | 346-256-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | HOUSTON | TX |
| 2017-06-20 | 346-257-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | KATY | TX |
| 2017-06-20 | 346-323-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | HUMBLE | TX |
| 2017-06-16 | 346-254-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CYPRESS | TX |
| 2017-06-16 | 346-254-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CYPRESS | TX |
| 2017-06-15 | 346-263-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAYTOWN | TX |
| 2017-06-13 | 346-241-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2017-06-13 | 346-241-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2017-06-13 | 346-249-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BAMMEL | TX |
| 2017-06-13 | 346-249-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BAMMEL | TX |
| 2017-06-13 | 346-249-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BAMMEL | TX |
| 2017-06-13 | 346-250-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-06-13 | 346-250-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-06-13 | 346-250-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-06-13 | 346-250-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-06-13 | 346-420-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | SUGAR LAND | TX |
| 2017-06-13 | 346-803-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HSTNSUBURB | TX |
| 2017-06-13 | 346-803-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HSTNSUBURB | TX |
| 2017-06-13 | 346-803-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HSTNSUBURB | TX |
| 2017-06-09 | 346-288-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BEACH CITY | TX |
| 2017-06-09 | 346-288-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BEACH CITY | TX |
| 2017-06-08 | 346-843-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | RICHMNRNBG | TX |
| 2017-06-07 | 346-209-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | LIVERPOOL | TX |
| 2017-06-07 | 346-413-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SPRING | TX |
| 2017-06-07 | 346-954-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | DEER PARK | TX |
| 2017-06-06 | 346-258-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SHELDON | TX |
| 2017-06-06 | 346-816-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | ARCOLA | TX |
| 2017-06-05 | 346-244-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | SATSUMA | TX |
| 2017-06-05 | 346-245-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | STAFFORD | TX |
| 2017-06-05 | 346-246-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | TOMBALL | TX |
| 2017-06-05 | 346-249-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | BAMMEL | TX |
| 2017-06-05 | 346-253-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | MANVEL | TX |
| 2017-06-05 | 346-313-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2017-06-05 | 346-320-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2017-06-05 | 346-323-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | HUMBLE | TX |
| 2017-06-05 | 346-413-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | SPRING | TX |
| 2017-06-05 | 346-762-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | RICHMNRNBG | TX |
| 2017-06-01 | 346-248-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | PINEHURST | TX |
| 2017-06-01 | 346-253-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | MANVEL | TX |
| 2017-06-01 | 346-288-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BEACH CITY | 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.