NumberResearchRecent thousands-block assignments
1 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 531
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Jan 2026
Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-09-02 | 531-587-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2026-08-14 | 531-484-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | OMAHA | NE |
| 2026-07-09 | 531-427-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2026-07-09 | 531-430-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | OMAHA | NE |
| 2026-07-09 | 531-430-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | OMAHA | NE |
| 2022-09-01 | 531-278-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2022-09-01 | 531-278-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2022-07-21 | 531-278-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2022-07-21 | 531-278-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2022-07-21 | 531-278-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2022-07-21 | 531-278-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2022-07-21 | 531-278-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2022-07-21 | 531-278-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2022-07-21 | 531-278-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2022-06-16 | 531-257-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | VALENTINE | NE |
| 2022-02-01 | 531-273-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | DE WITT | NE |
| 2022-02-01 | 531-298-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | DORCHESTER | NE |
| 2022-01-28 | 531-231-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | CLAYCENTER | NE |
| 2022-01-28 | 531-251-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | DAWSON | NE |
| 2022-01-27 | 531-264-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | FIRTH | NE |
| 2022-01-27 | 531-271-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | O NEILL | NE |
| 2021-11-23 | 531-269-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | NORFOLK | NE |
| 2021-11-05 | 531-271-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | O NEILL | NE |
| 2020-12-18 | 531-252-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | CRESTON | NE |
| 2020-05-08 | 531-300-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | CRESTON | NE |
| 2020-04-14 | 531-253-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | OTOE | NE |
| 2019-08-15 | 531-224-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | AUBURN | NE |
| 2019-05-07 | 531-530-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2018-07-30 | 531-455-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | TALMAGE | NE |
| 2018-05-10 | 531-300-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | CRESTON | NE |
| 2018-05-10 | 531-335-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | WEST POINT | NE |
| 2016-08-11 | 531-205-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | OMAHA | NE |
| 2016-07-20 | 531-220-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2016-06-24 | 531-220-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2015-08-31 | 531-309-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | EDGAR | NE |
| 2015-04-10 | 531-333-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2015-04-10 | 531-333-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2015-04-10 | 531-333-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2015-04-10 | 531-333-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | LINCOLN | NE |
| 2015-04-10 | 531-600-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | OMAHA | NE |
| 2015-04-10 | 531-600-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | OMAHA | NE |
| 2015-04-10 | 531-600-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | OMAHA | NE |
| 2015-04-10 | 531-600-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | OMAHA | NE |
| 2015-04-10 | 531-600-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | OMAHA | NE |
| 2015-04-10 | 531-600-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - NE | 995E | OMAHA | NE |
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.