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 410
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2020-11-02 | 410-417-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | EDGEWOOD | MD |
| 2020-09-01 | 410-450-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | BALTIMORE | MD |
| 2020-09-01 | 410-683-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | COCKEYSVL | MD |
| 2020-08-05 | 410-498-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | COCKEYSVL | MD |
| 2020-06-04 | 410-368-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | BALTIMORE | MD |
| 2020-01-28 | 410-405-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | FORK | MD |
| 2019-07-15 | 410-450-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | BALTIMORE | MD |
| 2019-07-15 | 410-617-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | BALTIMORE | MD |
| 2019-07-15 | 410-801-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | BALTIMORE | MD |
| 2019-07-15 | 410-801-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | BALTIMORE | MD |
| 2018-09-19 | 410-204-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ARBUTUS | MD |
| 2018-07-23 | 410-316-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | COCKEYSVL | MD |
| 2018-05-11 | 410-694-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | GLENBURNIE | MD |
| 2017-02-28 | 410-881-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | SHERWD FOR | MD |
| 2016-08-09 | 410-995-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ELLICOTTCY | MD |
| 2016-07-22 | 410-855-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | GLENBURNIE | MD |
| 2016-06-21 | 410-618-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | PERRYVILLE | MD |
| 2015-06-09 | 410-705-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WATERLO236 | MD |
| 2015-06-08 | 410-216-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ANNAPOLIS | MD |
| 2015-05-06 | 410-618-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | PERRYVILLE | MD |
| 2015-04-22 | 410-324-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | TOWSON | MD |
| 2015-04-22 | 410-324-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | TOWSON | MD |
| 2015-04-22 | 410-424-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | GLENBURNIE | MD |
| 2015-04-22 | 410-424-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | GLENBURNIE | MD |
| 2015-04-22 | 410-442-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ELLICOTTCY | MD |
| 2015-04-22 | 410-995-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ELLICOTTCY | MD |
| 2015-04-21 | 410-204-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ARBUTUS | MD |
| 2015-04-21 | 410-204-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ARBUTUS | MD |
| 2015-04-21 | 410-297-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ABERDEEN | MD |
| 2015-04-21 | 410-297-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ABERDEEN | MD |
| 2015-04-14 | 410-469-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | BALTIMORE | MD |
| 2015-01-14 | 410-705-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WATERLO236 | MD |
| 2014-09-24 | 410-705-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WATERLO236 | MD |
| 2014-05-29 | 410-697-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | MILLERSVL | MD |
| 2014-05-07 | 410-983-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | FORK | MD |
| 2014-02-13 | 410-656-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | NORTH EAST | MD |
| 2014-01-22 | 410-834-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WATERLO236 | MD |
| 2014-01-21 | 410-989-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | FORK | MD |
| 2014-01-21 | 410-989-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | FORK | MD |
| 2014-01-21 | 410-989-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | FORK | MD |
| 2013-05-21 | 410-220-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ELKRIDGE | MD |
| 2013-05-21 | 410-834-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WATERLO236 | MD |
| 2013-02-18 | 410-571-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ANNAPOLIS | MD |
| 2013-02-18 | 410-934-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ANNAPOLIS | MD |
| 2013-01-03 | 410-921-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | SEVERN | MD |
| 2013-01-03 | 410-921-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | SEVERN | MD |
| 2013-01-03 | 410-989-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | FORK | MD |
| 2013-01-03 | 410-989-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | FORK | MD |
| 2013-01-03 | 410-989-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | FORK | MD |
| 2012-11-09 | 410-220-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ELKRIDGE | MD |
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.