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 |
|---|---|---|---|---|---|---|---|
| 2015-08-24 | 346-270-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-08-21 | 346-707-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | VLY LODGE | TX |
| 2015-08-20 | 346-303-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-08-20 | 346-303-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-08-20 | 346-303-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-08-20 | 346-303-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-08-20 | 346-303-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-08-20 | 346-303-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-08-20 | 346-303-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-08-20 | 346-303-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-08-20 | 346-303-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-08-20 | 346-303-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-08-20 | 346-801-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | BEACH CITY | TX |
| 2015-08-19 | 346-204-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HOUSTON | TX |
| 2015-08-19 | 346-204-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HOUSTON | TX |
| 2015-08-19 | 346-224-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SPRING | TX |
| 2015-08-19 | 346-307-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7239 | KATY | TX |
| 2015-08-19 | 346-808-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TOMBALL | TX |
| 2015-08-18 | 346-270-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | BAMMEL | TX |
| 2015-08-17 | 346-857-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | RICHMNRNBG | TX |
| 2015-08-14 | 346-240-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-08-14 | 346-304-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | STAFFORD | TX |
| 2015-08-14 | 346-304-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | STAFFORD | TX |
| 2015-08-14 | 346-314-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SATSUMA | TX |
| 2015-08-14 | 346-314-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SATSUMA | TX |
| 2015-08-14 | 346-314-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | SATSUMA | TX |
| 2015-08-10 | 346-314-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SATSUMA | TX |
| 2015-08-05 | 346-224-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SPRING | TX |
| 2015-08-05 | 346-707-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | VLY LODGE | TX |
| 2015-08-04 | 346-222-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LA PORTE | TX |
| 2015-08-03 | 346-251-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BARKER | TX |
| 2015-07-29 | 346-304-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | STAFFORD | TX |
| 2015-07-29 | 346-815-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | APOLLO | TX |
| 2015-07-27 | 346-702-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | RICHMNRNBG | TX |
| 2015-07-27 | 346-702-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | RICHMNRNBG | TX |
| 2015-07-27 | 346-908-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SMITHERSLK | TX |
| 2015-07-24 | 346-815-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | APOLLO | TX |
| 2015-07-24 | 346-815-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | APOLLO | TX |
| 2015-07-21 | 346-205-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | LANGHAMCRK | TX |
| 2015-07-17 | 346-331-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | SPRING | TX |
| 2015-07-16 | 346-201-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7239 | HOUSTON | TX |
| 2015-07-16 | 346-201-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7239 | HOUSTON | TX |
| 2015-07-16 | 346-231-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2015-07-16 | 346-231-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2015-07-15 | 346-201-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-07-15 | 346-201-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-07-15 | 346-201-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-07-14 | 346-812-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-07-14 | 346-812-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-07-14 | 346-812-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | 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.