NumberResearchRecent thousands-block assignments
19 blocks assigned in August 2026 · 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, August 2026 — NPA 350
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-26 | 350-252-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TURLOCK | CA |
| 2026-08-21 | 350-263-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | MODESTO | CA |
| 2026-08-21 | 350-263-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | MODESTO | CA |
| 2026-08-21 | 350-263-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | MODESTO | CA |
| 2026-08-19 | 350-249-7XXX | 7000–7999 | Assigned | OPENTACT INC. | 824J | ATWATER | CA |
| 2026-08-19 | 350-262-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | STOCKTON | CA |
| 2026-08-13 | 350-231-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | STOCKTON | CA |
| 2026-08-13 | 350-242-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | STOCKTON | CA |
| 2026-08-13 | 350-256-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MODESTO | CA |
| 2026-08-13 | 350-256-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MODESTO | CA |
| 2026-08-13 | 350-256-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MODESTO | CA |
| 2026-08-13 | 350-998-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | STOCKTON | CA |
| 2026-08-11 | 350-260-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | DOS PALOS | CA |
| 2026-08-11 | 350-998-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | STOCKTON | CA |
| 2026-08-11 | 350-998-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | STOCKTON | CA |
| 2026-08-11 | 350-998-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | STOCKTON | CA |
| 2026-08-11 | 350-998-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | STOCKTON | CA |
| 2026-08-07 | 350-253-7XXX | 7000–7999 | Assigned | EXIANT COMMUNICATIONS LLC | 114J | CLEMENTS | CA |
| 2026-08-04 | 350-259-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LODI | 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.