NumberResearchRecent thousands-block assignments
11 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 573
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 |
|---|---|---|---|---|---|---|---|
| 2024-03-20 | 573-571-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | CAPEGIRARD | MO |
| 2024-03-13 | 573-978-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | CENTERTOWN | MO |
| 2024-03-07 | 573-423-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BELLEVIEW | MO |
| 2024-03-07 | 573-779-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CALEDONIA | MO |
| 2024-03-05 | 573-968-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | COLUMBIA | MO |
| 2024-03-04 | 573-518-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FLAT RIVER | MO |
| 2024-02-26 | 573-428-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2024-02-26 | 573-428-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2024-02-26 | 573-865-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2024-02-26 | 573-865-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2024-02-26 | 573-865-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2024-02-26 | 573-865-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2024-02-26 | 573-865-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2024-02-26 | 573-865-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2024-02-26 | 573-865-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2024-02-26 | 573-865-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2024-02-26 | 573-865-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2024-02-26 | 573-865-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2024-02-22 | 573-240-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CENTER | MO |
| 2024-02-22 | 573-284-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | VERSAILLES | MO |
| 2024-02-22 | 573-319-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MACKSCREEK | MO |
| 2024-02-22 | 573-369-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | TUSCUMBIA | MO |
| 2024-02-22 | 573-377-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | STOVER | MO |
| 2024-02-22 | 573-436-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | POTOSI | MO |
| 2024-02-22 | 573-454-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FLAT RIVER | MO |
| 2024-02-22 | 573-463-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BUNKER | MO |
| 2024-02-22 | 573-482-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FARMINGTON | MO |
| 2024-02-22 | 573-487-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LESTERVL | MO |
| 2024-02-22 | 573-501-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HANNIBAL | MO |
| 2024-02-22 | 573-503-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MIDDLETOWN | MO |
| 2024-02-22 | 573-505-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GRAVOIS ML | MO |
| 2024-02-22 | 573-538-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BOSS | MO |
| 2024-02-22 | 573-561-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FREDERCKTN | MO |
| 2024-02-22 | 573-602-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ELDON | MO |
| 2024-02-22 | 573-613-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FULTON | MO |
| 2024-02-22 | 573-623-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | OATES | MO |
| 2024-02-22 | 573-666-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BOWLNGGREN | MO |
| 2024-02-22 | 573-669-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NEW HARTFD | MO |
| 2024-02-22 | 573-704-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | IRONTON | MO |
| 2024-02-22 | 573-706-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WELLSVILLE | MO |
| 2024-02-22 | 573-710-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MARTINSBG | MO |
| 2024-02-22 | 573-723-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LKOZKOSBCH | MO |
| 2024-02-22 | 573-749-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | IRONDALE | MO |
| 2024-02-22 | 573-780-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | STEGNVIEVE | MO |
| 2024-02-22 | 573-781-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CLIMAX SPG | MO |
| 2024-02-22 | 573-784-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRANKFORD | MO |
| 2024-02-22 | 573-790-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CLARKSVL | MO |
| 2024-02-22 | 573-802-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | RICHWOODS | MO |
| 2024-02-22 | 573-828-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | VANDALIA | MO |
| 2024-02-22 | 573-831-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CALEDONIA | 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.