NumberResearchRecent thousands-block assignments
0 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, all time — NPA 557
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-18 | 557-246-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | ST LOUIS | MO |
| 2026-08-18 | 557-246-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | ST LOUIS | MO |
| 2026-08-18 | 557-246-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | ST LOUIS | MO |
| 2026-06-15 | 557-255-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | LADUE | MO |
| 2026-06-15 | 557-255-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | LADUE | MO |
| 2024-10-16 | 557-207-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | OAKVILLE | MO |
| 2024-10-04 | 557-227-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | KIRKWOOD | MO |
| 2024-10-04 | 557-227-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | KIRKWOOD | MO |
| 2024-09-25 | 557-226-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | CREVECOEUR | MO |
| 2022-09-29 | 557-500-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | ST LOUIS | MO |
| 2022-09-29 | 557-500-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | ST LOUIS | MO |
| 2022-09-29 | 557-500-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | ST LOUIS | MO |
| 2022-09-29 | 557-500-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | 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.