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 |
|---|---|---|---|---|---|---|---|
| 2015-01-28 | 346-219-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | HSTNSUBURB | TX |
| 2015-01-27 | 346-216-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7239 | BAYTOWN | TX |
| 2015-01-23 | 346-207-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | HSTNSUBURB | TX |
| 2015-01-22 | 346-203-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | HSTNSUBURB | TX |
| 2015-01-22 | 346-203-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | HSTNSUBURB | TX |
| 2015-01-21 | 346-301-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SPLENDORA | TX |
| 2015-01-20 | 346-215-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | ALVIN | TX |
| 2015-01-19 | 346-201-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HOUSTON | TX |
| 2015-01-19 | 346-201-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HOUSTON | TX |
| 2015-01-19 | 346-201-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HOUSTON | TX |
| 2015-01-19 | 346-201-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HOUSTON | TX |
| 2015-01-19 | 346-201-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HOUSTON | TX |
| 2015-01-08 | 346-207-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HSTNSUBURB | TX |
| 2015-01-08 | 346-207-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HSTNSUBURB | TX |
| 2014-12-24 | 346-206-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | SATSUMA | TX |
| 2014-12-24 | 346-206-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | SATSUMA | TX |
| 2014-12-23 | 346-215-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | ALVIN | TX |
| 2014-12-23 | 346-215-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | ALVIN | TX |
| 2014-12-16 | 346-203-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | HSTNSUBURB | TX |
| 2014-12-16 | 346-207-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | HSTNSUBURB | TX |
| 2014-12-02 | 346-222-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | LA PORTE | TX |
| 2014-12-01 | 346-202-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | BAMMEL | TX |
| 2014-12-01 | 346-202-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | BAMMEL | TX |
| 2014-12-01 | 346-202-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | BAMMEL | TX |
| 2014-12-01 | 346-202-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | BAMMEL | TX |
| 2014-10-30 | 346-888-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HSTNSUBURB | TX |
| 2014-10-30 | 346-888-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2014-10-30 | 346-888-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2014-09-29 | 346-888-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HSTNSUBURB | TX |
| 2014-09-29 | 346-888-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HSTNSUBURB | TX |
| 2014-09-16 | 346-888-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HSTNSUBURB | TX |
| 2014-09-15 | 346-333-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LANGHAMCRK | TX |
| 2014-09-15 | 346-333-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LANGHAMCRK | TX |
| 2014-09-15 | 346-333-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LANGHAMCRK | TX |
| 2014-09-08 | 346-222-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | LA PORTE | TX |
| 2014-09-08 | 346-222-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | LA PORTE | TX |
| 2014-09-08 | 346-888-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2014-09-08 | 346-888-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2014-08-29 | 346-777-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2014-08-29 | 346-777-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2014-08-29 | 346-777-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2014-08-29 | 346-777-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2014-08-29 | 346-777-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2014-08-29 | 346-777-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2014-08-29 | 346-777-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2014-08-29 | 346-777-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2014-08-29 | 346-777-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2014-08-11 | 346-444-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HOUSTON | TX |
| 2014-08-08 | 346-444-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2014-08-08 | 346-444-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | 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.