NumberResearchRecent thousands-block assignments
19 blocks assigned in the last 30 days · 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, last 30 days — NPA 557
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-06-18 | 557-221-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2024-06-18 | 557-221-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2024-06-18 | 557-221-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2024-06-17 | 557-225-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO |
| 2024-06-11 | 557-210-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2024-06-11 | 557-210-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2024-06-11 | 557-210-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2024-06-11 | 557-223-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2024-06-11 | 557-223-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2024-06-11 | 557-223-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2024-06-06 | 557-209-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2024-06-06 | 557-209-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2024-06-06 | 557-209-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2024-06-05 | 557-226-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2024-06-05 | 557-226-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2024-06-05 | 557-226-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2024-06-05 | 557-226-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2024-06-05 | 557-226-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2024-05-30 | 557-220-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CREVECOEUR | MO |
| 2024-05-14 | 557-217-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2024-05-14 | 557-217-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2024-05-01 | 557-207-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | OAKVILLE | MO |
| 2024-04-30 | 557-204-3XXX | 3000–3999 | Assigned | VONAGE AMERICA LLC | 197D | ST LOUIS | MO |
| 2024-04-30 | 557-220-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2024-04-30 | 557-223-7XXX | 7000–7999 | Assigned | VONAGE AMERICA LLC | 197D | LADUE | MO |
| 2024-04-18 | 557-204-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2024-04-18 | 557-204-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2024-04-18 | 557-222-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2024-04-18 | 557-225-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2024-04-18 | 557-225-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2024-04-17 | 557-217-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SAPPINGTON | MO |
| 2024-04-11 | 557-220-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CREVECOEUR | MO |
| 2024-04-10 | 557-221-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2024-04-10 | 557-223-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO |
| 2024-04-10 | 557-223-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO |
| 2024-04-10 | 557-223-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO |
| 2024-04-10 | 557-225-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2024-04-10 | 557-225-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2024-04-10 | 557-225-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2024-04-02 | 557-217-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2024-03-29 | 557-209-8XXX | 8000–8999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | KIRKWOOD | MO |
| 2024-03-27 | 557-219-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2024-03-27 | 557-219-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2024-03-27 | 557-220-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2024-03-19 | 557-222-3XXX | 3000–3999 | Assigned | NUSO, LLC | 732J | ST LOUIS | MO |
| 2024-03-19 | 557-222-4XXX | 4000–4999 | Assigned | NUSO, LLC | 732J | ST LOUIS | MO |
| 2024-03-14 | 557-217-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2024-03-06 | 557-204-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | ST LOUIS | MO |
| 2024-03-06 | 557-215-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | ST LOUIS | MO |
| 2024-03-05 | 557-212-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
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.