NumberResearchRecent thousands-block assignments
9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 557
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-09-14 | 557-258-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | OAKVILLE | MO |
| 2026-09-04 | 557-259-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2026-09-04 | 557-259-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2026-08-26 | 557-256-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-08-26 | 557-256-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-08-26 | 557-256-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-08-26 | 557-261-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2026-08-26 | 557-261-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2026-08-26 | 557-261-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2026-08-13 | 557-233-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-08-13 | 557-245-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-08-13 | 557-248-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-08-13 | 557-248-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-08-13 | 557-248-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-08-13 | 557-248-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-08-13 | 557-248-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-08-13 | 557-248-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-08-07 | 557-230-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2026-07-09 | 557-239-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-07-09 | 557-239-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-07-08 | 557-257-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2026-07-08 | 557-257-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2026-07-08 | 557-257-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2026-07-08 | 557-258-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | OAKVILLE | MO |
| 2026-07-08 | 557-259-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2026-06-26 | 557-253-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2026-06-26 | 557-253-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2026-06-26 | 557-255-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-06-26 | 557-255-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-05-29 | 557-230-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2026-05-29 | 557-246-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-05-29 | 557-246-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-05-29 | 557-248-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-05-29 | 557-248-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-05-29 | 557-248-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-05-29 | 557-253-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2026-05-29 | 557-253-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2026-05-29 | 557-253-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2026-05-29 | 557-255-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-05-29 | 557-255-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-05-29 | 557-255-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-05-29 | 557-255-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-05-29 | 557-255-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-05-29 | 557-255-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-05-29 | 557-256-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-05-29 | 557-256-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-05-20 | 557-444-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2026-05-20 | 557-444-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2026-05-06 | 557-207-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | OAKVILLE | MO |
| 2026-04-09 | 557-226-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.