NumberResearchRecent thousands-block assignments
0 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, all time — NPA 573
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-03-13 | 573-981-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CAMDENTON | MO |
| 2025-03-13 | 573-981-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CAMDENTON | MO |
| 2025-03-13 | 573-981-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CAMDENTON | MO |
| 2025-01-27 | 573-981-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CAMDENTON | MO |
| 2025-01-27 | 573-981-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CAMDENTON | MO |
| 2025-01-15 | 573-932-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CAMDENTON | MO |
| 2024-12-18 | 573-602-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | ELDON | MO |
| 2024-12-18 | 573-602-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | ELDON | MO |
| 2022-12-09 | 573-383-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CANTON | MO |
| 2022-11-14 | 573-537-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | ROLLA | MO |
| 2022-06-13 | 573-889-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | LICKING | MO |
| 2021-11-16 | 573-466-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | ROLLA | MO |
| 2021-11-01 | 573-602-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | ELDON | MO |
| 2021-02-01 | 573-933-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CENTRALIA | MO |
| 2020-11-10 | 573-818-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | COLUMBIA | MO |
| 2020-09-25 | 573-691-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | JEFFERSNCY | MO |
| 2020-07-28 | 573-567-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MEXICO | MO |
| 2020-05-18 | 573-383-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CANTON | MO |
| 2020-04-17 | 573-890-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | FULTON | MO |
| 2020-04-06 | 573-932-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CAMDENTON | MO |
| 2019-03-19 | 573-288-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CANTON | MO |
| 2019-02-07 | 573-889-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | LICKING | MO |
| 2016-08-02 | 573-501-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | HANNIBAL | MO |
| 2015-12-23 | 573-501-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | HANNIBAL | MO |
| 2015-03-13 | 573-410-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CAMDENTON | MO |
| 2014-04-02 | 573-501-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | HANNIBAL | MO |
| 2014-02-25 | 573-416-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | FULTON | MO |
| 2014-02-25 | 573-466-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | ROLLA | MO |
| 2014-02-25 | 573-603-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | HANNIBAL | MO |
| 2013-01-30 | 573-324-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BOWLNGGREN | MO |
| 2012-09-26 | 573-933-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CENTRALIA | MO |
| 2012-05-23 | 573-719-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | HANNIBAL | MO |
| 2011-10-27 | 573-719-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | HANNIBAL | MO |
| 2010-05-04 | 573-933-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CENTRALIA | MO |
| 2010-03-22 | 573-719-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | HANNIBAL | MO |
| 2009-09-15 | 573-629-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | HANNIBAL | MO |
| 2009-02-26 | 573-466-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | ROLLA | MO |
| 2008-12-19 | 573-560-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | LOUISIANA | MO |
| 2008-07-15 | 573-629-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | HANNIBAL | MO |
| 2007-07-26 | 573-231-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | HANNIBAL | MO |
| 2007-03-29 | 573-873-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CAMDENTON | MO |
| 2006-12-04 | 573-202-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | ROLLA | MO |
| 2006-06-22 | 573-826-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | FULTON | MO |
| 2004-04-07 | 573-560-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | LOUISIANA | MO |
| 2003-04-03 | 573-682-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CENTRALIA | MO |
| 2003-04-03 | 573-682-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CENTRALIA | MO |
| 2003-04-03 | 573-682-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | CENTRALIA | 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.