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 |
|---|---|---|---|---|---|---|---|
| 2019-01-29 | 559-546-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SANGER | CA |
| 2019-01-29 | 559-546-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SANGER | CA |
| 2019-01-29 | 559-566-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | THREERIVRS | CA |
| 2019-01-29 | 559-566-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | THREERIVRS | CA |
| 2019-01-29 | 559-574-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | PARLIER | CA |
| 2019-01-29 | 559-574-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | PARLIER | CA |
| 2019-01-29 | 559-717-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | AVENAL | CA |
| 2019-01-29 | 559-717-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | AVENAL | CA |
| 2019-01-29 | 559-742-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | RIVERDALE | CA |
| 2019-01-29 | 559-742-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | RIVERDALE | CA |
| 2019-01-29 | 559-745-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SEQUOIA | CA |
| 2019-01-29 | 559-745-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SEQUOIA | CA |
| 2019-01-29 | 559-794-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | HANFORD | CA |
| 2019-01-29 | 559-794-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | HANFORD | CA |
| 2019-01-29 | 559-794-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | HANFORD | CA |
| 2019-01-29 | 559-819-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SELMA | CA |
| 2019-01-29 | 559-819-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | SELMA | CA |
| 2019-01-29 | 559-838-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | EXETER | CA |
| 2019-01-29 | 559-838-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | EXETER | CA |
| 2019-01-29 | 559-963-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | LATON | CA |
| 2019-01-29 | 559-963-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | LATON | CA |
| 2019-01-29 | 559-991-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | TULARE | CA |
| 2019-01-23 | 559-615-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | PORTERVL | CA |
| 2019-01-15 | 559-551-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | REEDLEY | CA |
| 2019-01-15 | 559-551-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | REEDLEY | CA |
| 2018-12-31 | 559-653-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FOWLER | CA |
| 2018-11-20 | 559-712-6XXX | 6000–6999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | CLOVIS | CA |
| 2018-10-19 | 559-539-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SPRINGVL | CA |
| 2018-10-10 | 559-539-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SPRINGVL | CA |
| 2018-10-10 | 559-561-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | THREERIVRS | CA |
| 2018-10-10 | 559-565-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SEQUOIA | CA |
| 2018-10-09 | 559-319-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | FRESNO | CA |
| 2018-10-08 | 559-755-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KERMAN | CA |
| 2018-10-02 | 559-596-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | DINUBA | CA |
| 2018-10-01 | 559-335-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | GRANTGROVE | CA |
| 2018-10-01 | 559-527-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | TERRABELLA | CA |
| 2018-09-24 | 559-257-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SELMA | CA |
| 2018-09-24 | 559-330-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | MADERA | CA |
| 2018-09-24 | 559-336-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | MIRANTPHST | CA |
| 2018-09-24 | 559-340-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | DUNLAP | CA |
| 2018-09-24 | 559-757-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | PIXLEY | CA |
| 2018-09-19 | 559-319-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2018-09-19 | 559-319-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2018-09-19 | 559-319-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2018-09-19 | 559-837-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | TULARE | CA |
| 2018-09-19 | 559-837-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | TULARE | CA |
| 2018-09-18 | 559-319-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | FRESNO | CA |
| 2018-08-29 | 559-319-8XXX | 8000–8999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | FRESNO | CA |
| 2018-08-17 | 559-775-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CHOWCHILLA | CA |
| 2018-08-14 | 559-413-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | HANFORD | 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.