NumberResearchRecent thousands-block assignments
7 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 628
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-10-03 | 628-800-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNFC CNTRL | CA |
| 2014-10-03 | 628-800-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNFC CNTRL | CA |
| 2014-10-03 | 628-800-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNFC CNTRL | CA |
| 2014-10-01 | 628-400-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-10-01 | 628-600-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-10-01 | 628-800-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-09-30 | 628-444-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-09-30 | 628-666-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | IGNACIO | CA |
| 2014-09-30 | 628-777-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNFC MT-EV | CA |
| 2014-09-30 | 628-888-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SAN RAFAEL | CA |
| 2014-09-29 | 628-222-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-09-29 | 628-333-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-09-29 | 628-900-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-09-29 | 628-900-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | CA |
| 2014-09-29 | 628-999-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SNFC CNTRL | 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.