NumberResearchRecent thousands-block assignments
19 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 557
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 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 |
| 2026-05-27 | 557-254-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2026-05-27 | 557-254-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2026-05-27 | 557-254-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2026-05-27 | 557-254-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2026-05-27 | 557-254-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2026-05-27 | 557-254-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2026-05-27 | 557-254-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2026-05-27 | 557-254-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2026-05-27 | 557-254-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2026-05-27 | 557-254-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2026-05-21 | 557-253-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-05-21 | 557-253-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-05-21 | 557-253-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-05-21 | 557-253-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-05-21 | 557-253-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | 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 |
| 2026-05-07 | 557-245-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-05-07 | 557-245-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-05-07 | 557-245-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-05-07 | 557-245-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | 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 |
| 2026-04-09 | 557-242-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-04-09 | 557-242-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-04-09 | 557-245-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-04-09 | 557-245-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-04-09 | 557-247-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-04-09 | 557-247-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-04-09 | 557-247-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-04-09 | 557-247-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-04-09 | 557-247-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-04-09 | 557-249-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-04-09 | 557-249-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-04-09 | 557-249-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-04-09 | 557-249-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-04-09 | 557-251-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2026-04-09 | 557-333-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2026-04-09 | 557-333-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2026-04-09 | 557-333-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2026-04-09 | 557-333-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2026-04-09 | 557-333-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2026-04-09 | 557-444-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2026-04-09 | 557-444-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2026-04-09 | 557-888-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2026-03-19 | 557-250-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-03-19 | 557-250-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
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.