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 |
|---|---|---|---|---|---|---|---|
| 2023-01-25 | 557-953-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-953-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-953-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-953-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-996-0XXX | 0000–0999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-996-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-996-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-996-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-996-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-996-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-996-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-996-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-996-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2023-01-25 | 557-996-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST LOUIS | MO |
| 2022-12-06 | 557-888-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2022-11-29 | 557-999-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2022-11-14 | 557-200-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2022-11-14 | 557-200-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2022-11-14 | 557-200-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2022-11-14 | 557-888-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2022-11-14 | 557-888-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2022-11-14 | 557-888-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2022-11-14 | 557-888-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2022-11-14 | 557-888-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2022-11-10 | 557-200-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2022-11-10 | 557-200-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2022-11-10 | 557-200-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2022-10-27 | 557-888-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2022-10-27 | 557-888-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2022-10-27 | 557-888-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2022-10-20 | 557-777-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CREVECOEUR | MO |
| 2022-10-20 | 557-777-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CREVECOEUR | MO |
| 2022-10-20 | 557-999-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SAPPINGTON | MO |
| 2022-10-20 | 557-999-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SAPPINGTON | MO |
| 2022-10-05 | 557-500-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2022-10-05 | 557-500-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | 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 |
| 2022-09-16 | 557-999-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SAPPINGTON | MO |
| 2022-09-01 | 557-500-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2022-09-01 | 557-500-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2022-09-01 | 557-500-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2022-08-25 | 557-200-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | LADUE | MO |
| 2022-08-24 | 557-777-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CREVECOEUR | MO |
| 2022-08-12 | 557-500-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ST LOUIS | MO |
| 2022-08-08 | 557-200-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2022-08-08 | 557-200-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2022-08-08 | 557-467-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | 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.