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 |
|---|---|---|---|---|---|---|---|
| 2025-10-23 | 557-244-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2025-10-23 | 557-244-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2025-10-23 | 557-244-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2025-10-15 | 557-243-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | ST LOUIS | MO |
| 2025-10-15 | 557-243-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | ST LOUIS | MO |
| 2025-10-14 | 557-241-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2025-10-14 | 557-242-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2025-10-09 | 557-243-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-10-09 | 557-243-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-10-09 | 557-243-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-10-09 | 557-243-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-10-09 | 557-243-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-10-09 | 557-243-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-10-03 | 557-241-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2025-10-03 | 557-242-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2025-10-02 | 557-207-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | OAKVILLE | MO |
| 2025-09-24 | 557-241-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2025-09-24 | 557-241-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2025-09-24 | 557-241-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2025-09-24 | 557-241-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2025-09-24 | 557-241-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2025-09-24 | 557-242-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2025-09-24 | 557-242-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2025-09-24 | 557-242-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2025-09-24 | 557-242-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2025-09-18 | 557-221-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2025-09-03 | 557-240-0XXX | 0000–0999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO |
| 2025-09-03 | 557-240-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO |
| 2025-09-03 | 557-240-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO |
| 2025-09-03 | 557-240-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO |
| 2025-09-03 | 557-240-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO |
| 2025-09-03 | 557-240-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO |
| 2025-09-03 | 557-240-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO |
| 2025-09-03 | 557-240-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO |
| 2025-09-03 | 557-240-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO |
| 2025-09-03 | 557-240-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO |
| 2025-08-07 | 557-228-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-08-07 | 557-228-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-08-07 | 557-228-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-08-07 | 557-228-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-08-07 | 557-228-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-08-07 | 557-239-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-08-07 | 557-239-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST LOUIS | MO |
| 2025-07-16 | 557-239-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | ST LOUIS | MO |
| 2025-07-16 | 557-239-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | ST LOUIS | MO |
| 2025-07-16 | 557-239-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | ST LOUIS | MO |
| 2025-07-16 | 557-239-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | ST LOUIS | MO |
| 2025-07-16 | 557-239-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | ST LOUIS | MO |
| 2025-07-15 | 557-212-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | MEHLVILLE | MO |
| 2025-07-15 | 557-333-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | 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.