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
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-09-14 | 557-258-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | OAKVILLE | MO |
| 2026-09-09 | 557-264-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2026-09-09 | 557-264-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2026-09-09 | 557-264-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | 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 |
| 2026-08-24 | 557-263-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-24 | 557-263-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-24 | 557-263-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-24 | 557-263-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-24 | 557-263-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-24 | 557-263-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-24 | 557-263-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-20 | 557-262-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-20 | 557-262-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-20 | 557-262-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-20 | 557-262-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-20 | 557-262-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-20 | 557-262-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-20 | 557-262-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-20 | 557-262-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-20 | 557-262-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2026-08-20 | 557-262-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 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 |
| 2026-08-13 | 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 |
| 2026-08-13 | 557-261-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-08-13 | 557-261-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-08-13 | 557-261-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-08-13 | 557-261-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-08-13 | 557-261-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-08-13 | 557-261-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-08-13 | 557-261-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-08-07 | 557-230-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2026-08-03 | 557-241-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | LADUE | MO |
| 2026-08-03 | 557-260-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | LADUE | 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.