NumberResearchRecent thousands-block assignments
21 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 559
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 |
|---|---|---|---|---|---|---|---|
| 2016-08-23 | 559-413-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HANFORD | CA |
| 2016-08-23 | 559-656-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TULARE | CA |
| 2016-08-22 | 559-405-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | DEL REY | CA |
| 2016-08-22 | 559-578-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | CLOVIS | CA |
| 2016-08-18 | 559-823-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORANGECOVE | CA |
| 2016-08-17 | 559-383-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | AVENAL | CA |
| 2016-08-10 | 559-725-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DINUBA | CA |
| 2016-08-08 | 559-656-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TULARE | CA |
| 2016-08-02 | 559-214-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | FRESNO | CA |
| 2016-08-02 | 559-671-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | EXETER | CA |
| 2016-08-02 | 559-671-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | EXETER | CA |
| 2016-08-02 | 559-838-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | EXETER | CA |
| 2016-08-02 | 559-838-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | EXETER | CA |
| 2016-07-28 | 559-571-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VISALIA | CA |
| 2016-07-26 | 559-214-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | FRESNO | CA |
| 2016-07-22 | 559-214-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FRESNO | CA |
| 2016-07-22 | 559-214-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FRESNO | CA |
| 2016-07-22 | 559-574-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PARLIER | CA |
| 2016-07-21 | 559-775-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHOWCHILLA | CA |
| 2016-07-19 | 559-205-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | VISALIA | CA |
| 2016-07-19 | 559-205-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2016-07-19 | 559-205-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2016-07-19 | 559-205-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2016-07-19 | 559-205-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2016-07-19 | 559-580-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | COARSEGOLD | CA |
| 2016-07-13 | 559-413-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | HANFORD | CA |
| 2016-07-13 | 559-413-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | HANFORD | CA |
| 2016-07-11 | 559-214-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | FRESNO | CA |
| 2016-07-05 | 559-214-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2016-07-05 | 559-214-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2016-07-05 | 559-214-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2016-07-05 | 559-819-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SELMA | CA |
| 2016-06-28 | 559-330-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MADERA | CA |
| 2016-06-28 | 559-725-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DINUBA | CA |
| 2016-06-28 | 559-728-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2016-06-28 | 559-728-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2016-06-28 | 559-728-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2016-06-28 | 559-728-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2016-06-28 | 559-728-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2016-06-27 | 559-712-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLOVIS | CA |
| 2016-06-27 | 559-712-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLOVIS | CA |
| 2016-06-27 | 559-712-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLOVIS | CA |
| 2016-06-27 | 559-712-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLOVIS | CA |
| 2016-06-27 | 559-712-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLOVIS | CA |
| 2016-06-21 | 559-633-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LEMOORE | CA |
| 2016-06-20 | 559-835-0XXX | 0000–0999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | FRESNO | CA |
| 2016-06-15 | 559-551-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | REEDLEY | CA |
| 2016-06-15 | 559-551-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | REEDLEY | CA |
| 2016-06-15 | 559-690-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2016-06-15 | 559-690-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.