NumberResearchRecent thousands-block assignments
36 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2015-07-14 | 346-812-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-07-14 | 346-812-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-07-14 | 346-812-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-07-14 | 346-812-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-07-14 | 346-812-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-07-14 | 346-812-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-07-14 | 346-812-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-07-10 | 346-702-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2015-07-10 | 346-702-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2015-07-10 | 346-702-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2015-07-10 | 346-702-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2015-07-09 | 346-231-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2015-07-09 | 346-231-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2015-07-08 | 346-312-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HSTNSUBURB | TX |
| 2015-07-07 | 346-225-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TOMBALL | TX |
| 2015-07-07 | 346-225-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TOMBALL | TX |
| 2015-07-07 | 346-225-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TOMBALL | TX |
| 2015-07-07 | 346-225-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TOMBALL | TX |
| 2015-07-07 | 346-225-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TOMBALL | TX |
| 2015-07-07 | 346-225-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TOMBALL | TX |
| 2015-07-07 | 346-225-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TOMBALL | TX |
| 2015-07-07 | 346-225-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TOMBALL | TX |
| 2015-07-07 | 346-225-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TOMBALL | TX |
| 2015-07-07 | 346-225-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TOMBALL | TX |
| 2015-07-06 | 346-224-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2015-07-06 | 346-224-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2015-07-06 | 346-224-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2015-07-06 | 346-224-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2015-07-06 | 346-224-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2015-07-06 | 346-224-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2015-07-06 | 346-229-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | HSTNSUBURB | TX |
| 2015-07-06 | 346-240-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HOUSTON | TX |
| 2015-07-06 | 346-240-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HOUSTON | TX |
| 2015-07-06 | 346-240-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HOUSTON | TX |
| 2015-07-06 | 346-305-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2015-07-06 | 346-305-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2015-07-06 | 346-305-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2015-07-06 | 346-305-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING | TX |
| 2015-07-06 | 346-666-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CYPRESS | TX |
| 2015-07-06 | 346-666-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CYPRESS | TX |
| 2015-07-06 | 346-666-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CYPRESS | TX |
| 2015-07-06 | 346-666-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CYPRESS | TX |
| 2015-07-06 | 346-666-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CYPRESS | TX |
| 2015-07-06 | 346-900-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | SUGAR LAND | TX |
| 2015-07-06 | 346-900-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | SUGAR LAND | TX |
| 2015-07-01 | 346-206-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SATSUMA | TX |
| 2015-07-01 | 346-206-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SATSUMA | TX |
| 2015-07-01 | 346-901-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SUGAR LAND | TX |
| 2015-07-01 | 346-901-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SUGAR LAND | TX |
| 2015-07-01 | 346-901-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SUGAR LAND | TX |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.