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 |
|---|---|---|---|---|---|---|---|
| 2015-05-22 | 346-704-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-05-22 | 346-704-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-05-22 | 346-704-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-05-22 | 346-704-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-05-18 | 346-701-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HOUSTON | TX |
| 2015-05-18 | 346-701-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HOUSTON | TX |
| 2015-05-08 | 346-707-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | VLY LODGE | TX |
| 2015-05-08 | 346-908-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SMITHERSLK | TX |
| 2015-05-07 | 346-305-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | SPRING | TX |
| 2015-05-07 | 346-305-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | SPRING | TX |
| 2015-05-07 | 346-305-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | SPRING | TX |
| 2015-05-05 | 346-205-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LANGHAMCRK | TX |
| 2015-05-05 | 346-209-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LIVERPOOL | TX |
| 2015-05-05 | 346-978-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LANGHAMCRK | TX |
| 2015-04-30 | 346-206-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SATSUMA | TX |
| 2015-04-29 | 346-702-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | RICHMNRNBG | TX |
| 2015-04-29 | 346-901-2XXX | 2000–2999 | Assigned | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7074 | SUGAR LAND | TX |
| 2015-04-27 | 346-701-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2015-04-27 | 346-701-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2015-04-22 | 346-203-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HSTNSUBURB | TX |
| 2015-04-22 | 346-203-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HSTNSUBURB | TX |
| 2015-04-21 | 346-202-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2015-04-21 | 346-203-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-04-21 | 346-203-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-04-21 | 346-203-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-04-21 | 346-208-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DICKINSON | TX |
| 2015-04-21 | 346-300-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2015-04-21 | 346-300-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2015-04-21 | 346-300-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAMMEL | TX |
| 2015-04-21 | 346-400-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-04-21 | 346-400-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-04-21 | 346-400-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2015-04-21 | 346-600-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HUMBLE | TX |
| 2015-04-21 | 346-600-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HUMBLE | TX |
| 2015-04-21 | 346-600-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HUMBLE | TX |
| 2015-04-21 | 346-600-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HUMBLE | TX |
| 2015-04-21 | 346-857-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | RICHMNRNBG | TX |
| 2015-04-21 | 346-857-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | RICHMNRNBG | TX |
| 2015-04-21 | 346-999-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HUFFMAN | TX |
| 2015-04-20 | 346-222-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LA PORTE | TX |
| 2015-04-20 | 346-704-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2015-04-20 | 346-704-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2015-04-20 | 346-704-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2015-04-20 | 346-704-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2015-04-20 | 346-704-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2015-04-20 | 346-704-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2015-04-20 | 346-708-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LANGHAMCRK | TX |
| 2015-04-20 | 346-708-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LANGHAMCRK | TX |
| 2015-04-20 | 346-708-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LANGHAMCRK | TX |
| 2015-04-20 | 346-708-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LANGHAMCRK | 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.