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 |
|---|---|---|---|---|---|---|---|
| 2015-09-22 | 559-672-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | REEDLEY | CA |
| 2015-09-22 | 559-672-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | REEDLEY | CA |
| 2015-09-14 | 559-780-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | CORCORAN | CA |
| 2015-09-10 | 559-656-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TULARE | CA |
| 2015-09-09 | 559-728-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FRESNO | CA |
| 2015-09-08 | 559-413-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HANFORD | CA |
| 2015-09-08 | 559-770-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2015-09-08 | 559-770-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2015-09-03 | 559-318-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SELMA | CA |
| 2015-09-03 | 559-672-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REEDLEY | CA |
| 2015-09-03 | 559-712-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2015-09-03 | 559-712-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2015-08-26 | 559-755-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KERMAN | CA |
| 2015-08-24 | 559-608-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2015-08-20 | 559-296-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FIREBAUGH | CA |
| 2015-08-20 | 559-424-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MENDOTA | CA |
| 2015-08-20 | 559-574-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PARLIER | CA |
| 2015-08-20 | 559-823-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORANGECOVE | CA |
| 2015-08-18 | 559-608-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | VISALIA | CA |
| 2015-08-11 | 559-482-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BURREL | CA |
| 2015-08-11 | 559-482-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BURREL | CA |
| 2015-08-11 | 559-482-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BURREL | CA |
| 2015-08-10 | 559-571-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VISALIA | CA |
| 2015-08-10 | 559-578-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CLOVIS | CA |
| 2015-07-31 | 559-377-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MADERA | CA |
| 2015-07-31 | 559-377-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MADERA | CA |
| 2015-07-31 | 559-377-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MADERA | CA |
| 2015-07-29 | 559-612-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2015-07-24 | 559-656-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TULARE | CA |
| 2015-07-24 | 559-656-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TULARE | CA |
| 2015-07-20 | 559-775-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | CHOWCHILLA | CA |
| 2015-07-20 | 559-775-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | CHOWCHILLA | CA |
| 2015-07-16 | 559-295-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | COALINGA | CA |
| 2015-07-16 | 559-343-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | STRATFORD | CA |
| 2015-07-16 | 559-370-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | THREERIVRS | CA |
| 2015-07-16 | 559-384-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BURREL | CA |
| 2015-07-16 | 559-521-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DEL REY | CA |
| 2015-07-16 | 559-653-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FOWLER | CA |
| 2015-07-15 | 559-328-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | AVENAL | CA |
| 2015-07-15 | 559-342-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PIXLEY | CA |
| 2015-07-15 | 559-854-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PORTERVL | CA |
| 2015-07-14 | 559-316-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | FOWLER | CA |
| 2015-07-14 | 559-344-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | FOWLER | CA |
| 2015-07-14 | 559-813-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FOWLER | CA |
| 2015-07-14 | 559-834-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | FOWLER | CA |
| 2015-07-13 | 559-578-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2015-07-13 | 559-578-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2015-07-10 | 559-540-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2015-07-10 | 559-540-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2015-07-10 | 559-540-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | 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.