NumberResearchRecent thousands-block assignments
22 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 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 |
|---|---|---|---|---|---|---|---|
| 2023-03-10 | 559-809-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2023-03-10 | 559-809-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2023-03-10 | 559-820-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2023-03-10 | 559-820-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2023-03-10 | 559-820-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2023-03-10 | 559-820-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2023-03-10 | 559-820-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2023-03-10 | 559-820-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2023-03-10 | 559-820-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2023-03-10 | 559-820-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISALIA | CA |
| 2023-03-08 | 559-768-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | REEDLEY | CA |
| 2023-03-08 | 559-768-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | REEDLEY | CA |
| 2023-03-08 | 559-814-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FOWLER | CA |
| 2023-02-21 | 559-620-7XXX | 7000–7999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SELMA | CA |
| 2023-02-15 | 559-580-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | COARSEGOLD | CA |
| 2023-02-15 | 559-954-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EXETER | CA |
| 2023-02-01 | 559-729-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | AVENAL | CA |
| 2023-01-31 | 559-774-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2023-01-31 | 559-774-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2023-01-19 | 559-818-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | CA |
| 2023-01-19 | 559-818-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | CA |
| 2023-01-19 | 559-818-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | CA |
| 2023-01-17 | 559-851-9XXX | 9000–9999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | HURON | CA |
| 2023-01-11 | 559-815-1XXX | 1000–1999 | Assigned | NUSO, LLC | 732J | FRESNO | CA |
| 2022-12-09 | 559-774-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | FRESNO | CA |
| 2022-12-02 | 559-557-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | VISALIA | CA |
| 2022-11-22 | 559-997-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LEMOORE | CA |
| 2022-11-17 | 559-716-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | MADERA | CA |
| 2022-11-17 | 559-758-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | PARLIER | CA |
| 2022-11-17 | 559-845-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | DINUBA | CA |
| 2022-11-17 | 559-845-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | DINUBA | CA |
| 2022-11-17 | 559-954-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | EXETER | CA |
| 2022-11-17 | 559-954-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | EXETER | CA |
| 2022-11-16 | 559-338-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | DUNLAP | CA |
| 2022-11-15 | 559-755-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KERMAN | CA |
| 2022-11-04 | 559-773-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LEMOORE | CA |
| 2022-11-03 | 559-510-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | TULARE | CA |
| 2022-11-03 | 559-510-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | TULARE | CA |
| 2022-11-03 | 559-510-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | TULARE | CA |
| 2022-11-01 | 559-543-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | HURON | CA |
| 2022-10-25 | 559-370-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | THREERIVRS | CA |
| 2022-10-25 | 559-607-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | DINUBA | CA |
| 2022-10-25 | 559-995-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | DEL REY | CA |
| 2022-10-25 | 559-995-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | DEL REY | CA |
| 2022-10-25 | 559-995-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | DEL REY | CA |
| 2022-10-25 | 559-995-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | DEL REY | CA |
| 2022-10-19 | 559-607-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | DINUBA | CA |
| 2022-10-11 | 559-607-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DINUBA | CA |
| 2022-10-07 | 559-910-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | GRANTGROVE | CA |
| 2022-10-07 | 559-966-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | SPRINGVL | CA |
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.