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 |
|---|---|---|---|---|---|---|---|
| 2026-03-11 | 557-207-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | OAKVILLE | MO |
| 2026-03-11 | 557-247-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-03-11 | 557-247-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-03-11 | 557-251-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | KIRKWOOD | MO |
| 2026-02-26 | 557-238-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-238-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-244-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-244-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-244-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-244-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-244-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-249-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-02-26 | 557-249-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-02-26 | 557-251-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-251-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-251-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-251-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-251-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-251-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-251-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-251-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2026-02-26 | 557-333-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2026-02-20 | 557-203-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MEHLVILLE | MO |
| 2026-02-20 | 557-246-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | ST LOUIS | MO |
| 2026-02-20 | 557-246-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | ST LOUIS | MO |
| 2026-02-20 | 557-246-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | ST LOUIS | MO |
| 2026-02-19 | 557-249-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LADUE | MO |
| 2026-02-18 | 557-242-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2026-02-18 | 557-444-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2026-02-05 | 557-250-3XXX | 3000–3999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ST LOUIS | MO |
| 2026-01-30 | 557-249-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-01-27 | 557-207-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MO | 093F | OAKVILLE | MO |
| 2026-01-27 | 557-247-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-01-27 | 557-247-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2026-01-21 | 557-220-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CREVECOEUR | MO |
| 2026-01-15 | 557-238-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | KIRKWOOD | MO |
| 2026-01-13 | 557-249-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-01-13 | 557-249-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2026-01-02 | 557-241-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO |
| 2026-01-02 | 557-241-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | LADUE | MO |
| 2025-12-29 | 557-248-1XXX | 1000–1999 | Assigned | E. RITTER COMMUNICATIONS, LLC | 128L | ST LOUIS | MO |
| 2025-12-17 | 557-444-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2025-12-11 | 557-221-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2025-12-11 | 557-247-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MEHLVILLE | MO |
| 2025-12-03 | 557-246-0XXX | 0000–0999 | Assigned | WAVENATION, LLC | 700J | ST LOUIS | MO |
| 2025-11-20 | 557-226-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2025-11-05 | 557-444-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CREVECOEUR | MO |
| 2025-11-04 | 557-333-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | SAPPINGTON | MO |
| 2025-10-23 | 557-244-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | MO |
| 2025-10-23 | 557-244-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KIRKWOOD | 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.