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
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Jan 2026
Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-10-28 | 559-378-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TULARE | CA |
| 2021-10-28 | 559-576-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PORTERVL | CA |
| 2021-10-28 | 559-576-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PORTERVL | CA |
| 2021-10-28 | 559-576-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PORTERVL | CA |
| 2021-10-27 | 559-510-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TULARE | CA |
| 2021-10-27 | 559-510-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TULARE | CA |
| 2021-10-27 | 559-628-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | CA |
| 2021-10-27 | 559-628-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | CA |
| 2021-10-27 | 559-628-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | CA |
| 2021-10-27 | 559-628-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CLOVIS | CA |
| 2021-10-22 | 559-628-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLOVIS | CA |
| 2021-10-22 | 559-628-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLOVIS | CA |
| 2021-10-22 | 559-628-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLOVIS | CA |
| 2021-10-22 | 559-628-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLOVIS | CA |
| 2021-10-22 | 559-628-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLOVIS | CA |
| 2021-10-21 | 559-464-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TERRABELLA | CA |
| 2021-10-19 | 559-220-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | LEMOORE | CA |
| 2021-10-19 | 559-220-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | LEMOORE | CA |
| 2021-10-19 | 559-220-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | LEMOORE | CA |
| 2021-10-19 | 559-620-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SELMA | CA |
| 2021-10-19 | 559-620-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SELMA | CA |
| 2021-10-19 | 559-620-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SELMA | CA |
| 2021-10-19 | 559-729-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | AVENAL | CA |
| 2021-10-19 | 559-729-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | AVENAL | CA |
| 2021-10-18 | 559-629-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2021-10-18 | 559-629-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2021-10-18 | 559-629-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2021-10-18 | 559-629-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2021-10-18 | 559-629-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRESNO | CA |
| 2021-10-15 | 559-532-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WOODLAKE | CA |
| 2021-10-15 | 559-626-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ORANGECOVE | CA |
| 2021-10-15 | 559-702-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WOODLAKE | CA |
| 2021-10-15 | 559-895-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BURREL | CA |
| 2021-10-15 | 559-895-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BURREL | CA |
| 2021-10-08 | 559-234-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CARUTHERS | CA |
| 2021-10-08 | 559-601-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CARUTHERS | CA |
| 2021-10-08 | 559-601-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CARUTHERS | CA |
| 2021-10-08 | 559-763-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HURON | CA |
| 2021-10-08 | 559-763-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HURON | CA |
| 2021-10-08 | 559-763-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HURON | CA |
| 2021-10-08 | 559-763-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HURON | CA |
| 2021-10-08 | 559-851-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HURON | CA |
| 2021-10-08 | 559-851-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HURON | CA |
| 2021-10-07 | 559-386-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | AVENAL | CA |
| 2021-10-05 | 559-716-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | MADERA | CA |
| 2021-10-04 | 559-510-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | TULARE | CA |
| 2021-10-04 | 559-587-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | HANFORD | CA |
| 2021-10-04 | 559-629-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | FRESNO | CA |
| 2021-10-04 | 559-792-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | PORTERVL | CA |
| 2021-10-04 | 559-990-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SANGER | 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.