NumberResearchRecent thousands-block assignments
21 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 |
|---|---|---|---|---|---|---|---|
| 2015-06-05 | 559-835-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2015-06-05 | 559-835-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2015-06-05 | 559-835-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2015-06-05 | 559-895-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BURREL | CA |
| 2015-06-05 | 559-895-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BURREL | CA |
| 2015-06-05 | 559-895-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BURREL | CA |
| 2015-06-05 | 559-895-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BURREL | CA |
| 2015-06-04 | 559-864-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CARUTHERS | CA |
| 2015-06-04 | 559-864-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CARUTHERS | CA |
| 2015-06-04 | 559-922-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LATON | CA |
| 2015-06-04 | 559-922-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LATON | CA |
| 2015-06-03 | 559-548-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2015-06-02 | 559-257-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SELMA | CA |
| 2015-06-02 | 559-531-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TIVYVALLEY | CA |
| 2015-06-02 | 559-578-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2015-06-02 | 559-837-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TULARE | CA |
| 2015-06-02 | 559-931-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2015-06-02 | 559-931-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2015-06-02 | 559-931-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2015-06-02 | 559-931-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2015-06-02 | 559-931-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2015-05-22 | 559-831-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MADERA | CA |
| 2015-05-21 | 559-712-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | CA |
| 2015-05-19 | 559-794-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HANFORD | CA |
| 2015-05-18 | 559-796-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | HANFORD | CA |
| 2015-05-18 | 559-796-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | HANFORD | CA |
| 2015-05-18 | 559-796-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | HANFORD | CA |
| 2015-05-18 | 559-796-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | HANFORD | CA |
| 2015-05-14 | 559-548-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2015-05-14 | 559-548-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2015-05-14 | 559-548-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2015-05-14 | 559-548-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2015-05-14 | 559-548-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2015-05-14 | 559-548-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2015-05-14 | 559-548-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2015-05-14 | 559-548-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2015-05-13 | 559-461-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SEQUOIA | CA |
| 2015-05-13 | 559-462-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SPRINGVL | CA |
| 2015-05-13 | 559-466-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TIPTON | CA |
| 2015-05-13 | 559-468-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WOODLAKE | CA |
| 2015-05-13 | 559-931-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VISALIA | CA |
| 2015-05-13 | 559-931-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VISALIA | CA |
| 2015-05-13 | 559-931-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VISALIA | CA |
| 2015-05-12 | 559-817-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LEMOORE | CA |
| 2015-05-08 | 559-202-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | PORTERVL | CA |
| 2015-05-08 | 559-376-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TERRABELLA | CA |
| 2015-05-08 | 559-464-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TERRABELLA | CA |
| 2015-05-08 | 559-545-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CLOVIS | CA |
| 2015-05-08 | 559-719-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | PORTERVL | CA |
| 2015-05-08 | 559-756-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | PORTERVL | 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.