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 |
|---|---|---|---|---|---|---|---|
| 2015-12-07 | 559-770-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2015-12-07 | 559-770-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2015-12-07 | 559-787-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TIVYVALLEY | CA |
| 2015-12-01 | 559-586-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LINDSAY | CA |
| 2015-12-01 | 559-586-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LINDSAY | CA |
| 2015-12-01 | 559-653-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FOWLER | CA |
| 2015-12-01 | 559-656-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TULARE | CA |
| 2015-12-01 | 559-656-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TULARE | CA |
| 2015-12-01 | 559-721-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | FRESNO | CA |
| 2015-12-01 | 559-755-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KERMAN | CA |
| 2015-12-01 | 559-755-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KERMAN | CA |
| 2015-11-24 | 559-586-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LINDSAY | CA |
| 2015-11-20 | 559-206-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2015-11-20 | 559-206-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2015-11-20 | 559-206-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2015-11-20 | 559-206-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2015-11-20 | 559-206-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2015-11-20 | 559-206-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2015-11-20 | 559-206-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2015-11-20 | 559-206-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2015-11-20 | 559-206-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2015-11-20 | 559-206-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | FRESNO | CA |
| 2015-11-17 | 559-424-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | MENDOTA | CA |
| 2015-11-13 | 559-551-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REEDLEY | CA |
| 2015-11-13 | 559-574-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PARLIER | CA |
| 2015-11-09 | 559-531-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TIVYVALLEY | CA |
| 2015-10-30 | 559-856-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SELMA | CA |
| 2015-10-30 | 559-856-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SELMA | CA |
| 2015-10-20 | 559-328-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | AVENAL | CA |
| 2015-10-19 | 559-724-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | FRESNO | CA |
| 2015-10-12 | 559-295-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | COALINGA | CA |
| 2015-10-06 | 559-377-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MADERA | CA |
| 2015-10-06 | 559-377-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MADERA | CA |
| 2015-10-06 | 559-725-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DINUBA | CA |
| 2015-10-05 | 559-535-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TERRABELLA | CA |
| 2015-10-05 | 559-656-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TULARE | CA |
| 2015-10-05 | 559-770-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLOVIS | CA |
| 2015-09-30 | 559-724-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | FRESNO | CA |
| 2015-09-29 | 559-546-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SANGER | CA |
| 2015-09-29 | 559-612-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2015-09-29 | 559-612-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2015-09-29 | 559-612-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2015-09-29 | 559-728-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2015-09-29 | 559-728-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2015-09-29 | 559-728-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA |
| 2015-09-23 | 559-328-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | AVENAL | CA |
| 2015-09-23 | 559-328-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | AVENAL | CA |
| 2015-09-22 | 559-330-0XXX | 0000–0999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | MADERA | CA |
| 2015-09-22 | 559-672-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | REEDLEY | CA |
| 2015-09-22 | 559-672-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | REEDLEY | 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.