NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 660
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 |
|---|---|---|---|---|---|---|---|
| 2021-11-16 | 660-276-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MOBERLY | MO |
| 2021-11-16 | 660-346-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MACON | MO |
| 2021-01-18 | 660-310-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SEDALIA | MO |
| 2019-02-07 | 660-327-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | PARIS | MO |
| 2017-09-29 | 660-730-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | KIRKSVILLE | MO |
| 2016-06-09 | 660-956-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | KIRKSVILLE | MO |
| 2016-02-24 | 660-956-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | KIRKSVILLE | MO |
| 2015-05-22 | 660-346-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MACON | MO |
| 2015-03-05 | 660-956-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | KIRKSVILLE | MO |
| 2014-05-27 | 660-888-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BOONVILLE | MO |
| 2014-04-02 | 660-353-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MOBERLY | MO |
| 2014-02-20 | 660-833-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MOBERLY | MO |
| 2013-05-20 | 660-956-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | KIRKSVILLE | MO |
| 2012-10-15 | 660-956-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | KIRKSVILLE | MO |
| 2012-09-27 | 660-346-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MACON | MO |
| 2012-06-06 | 660-342-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | KIRKSVILLE | MO |
| 2012-03-15 | 660-346-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MACON | MO |
| 2011-07-11 | 660-833-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MOBERLY | MO |
| 2010-01-07 | 660-346-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MACON | MO |
| 2009-12-10 | 660-342-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | KIRKSVILLE | MO |
| 2009-12-02 | 660-833-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MOBERLY | MO |
| 2008-08-15 | 660-346-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MACON | MO |
| 2007-07-26 | 660-833-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MOBERLY | MO |
| 2007-04-25 | 660-672-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BOONVILLE | MO |
| 2007-02-12 | 660-833-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MOBERLY | MO |
| 2006-07-26 | 660-553-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SEDALIA | MO |
| 2006-04-11 | 660-833-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MOBERLY | MO |
| 2005-06-13 | 660-833-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MOBERLY | MO |
| 2005-06-13 | 660-833-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MOBERLY | MO |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.