NumberResearchRecent thousands-block assignments
17 blocks assigned in August 2026 · from the daily NANPA thousands-block report, 09/19/2026
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, August 2026 — NPA 559
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-26 | 559-858-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HANFORD | CA |
| 2026-08-26 | 559-858-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HANFORD | CA |
| 2026-08-21 | 559-858-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | HANFORD | CA |
| 2026-08-20 | 559-559-7XXX | 7000–7999 | Assigned | OPENTACT INC. | 824J | CHOWCHILLA | CA |
| 2026-08-20 | 559-858-7XXX | 7000–7999 | Assigned | OPENTACT INC. | 824J | HANFORD | CA |
| 2026-08-19 | 559-364-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SANJOAQUIN | CA |
| 2026-08-19 | 559-657-7XXX | 7000–7999 | Assigned | OPENTACT INC. | 824J | FIREBAUGH | CA |
| 2026-08-19 | 559-986-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FRESNO | CA |
| 2026-08-19 | 559-986-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FRESNO | CA |
| 2026-08-19 | 559-986-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FRESNO | CA |
| 2026-08-19 | 559-986-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FRESNO | CA |
| 2026-08-13 | 559-983-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DINUBA | CA |
| 2026-08-13 | 559-985-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MADERA | CA |
| 2026-08-13 | 559-989-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | VISALIA | CA |
| 2026-08-07 | 559-983-7XXX | 7000–7999 | Assigned | EXIANT COMMUNICATIONS LLC | 114J | DINUBA | CA |
| 2026-08-05 | 559-952-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PARLIER | CA |
| 2026-08-05 | 559-983-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DINUBA | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.