NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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 617
BANDWIDTH.COM CLEC, LLC - MA 1
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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2026-09-02 617-609-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MILTON MA
2026-08-20 617-397-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CAMBRIDGE MA
2026-08-20 617-806-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CAMBRIDGE MA
2026-07-09 617-915-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MILTON MA
2026-06-12 617-203-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2026-04-09 617-239-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BOSTON MA
2026-04-09 617-848-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BOSTON MA
2024-10-15 617-307-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SO BOSTON MA
2024-09-27 617-764-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SOMERVILLE MA
2024-09-25 617-857-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BROOKLINE MA
2024-09-25 617-857-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BROOKLINE MA
2024-09-25 617-857-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BROOKLINE MA
2022-10-19 617-256-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CAMBRIDGE MA
2022-10-19 617-444-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CAMBRIDGE MA
2022-07-21 617-458-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WATERTOWN MA
2022-07-21 617-458-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WATERTOWN MA
2022-06-29 617-351-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BOSTON MA
2022-06-29 617-371-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BOSTON MA
2022-06-29 617-589-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BOSTON MA
2022-06-29 617-927-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BOSTON MA
2020-03-03 617-380-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHARLESTN MA
2019-05-02 617-420-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2018-09-19 617-203-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2018-09-19 617-203-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2018-05-25 617-685-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CAMBRIDGE MA
2017-07-18 617-203-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2016-06-21 617-544-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2016-06-17 617-837-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E QUINCY MA
2016-06-13 617-618-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2015-08-24 617-315-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SO BOSTON MA
2015-08-24 617-402-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WATERTOWN MA
2015-08-24 617-657-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E QUINCY MA
2015-04-16 617-420-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2015-04-16 617-420-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2015-04-16 617-420-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2015-01-26 617-302-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E QUINCY MA
2015-01-26 617-663-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2015-01-26 617-718-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SOMERVILLE MA
2014-12-03 617-804-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E QUINCY MA
2014-12-03 617-804-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E QUINCY MA
2014-12-03 617-804-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E QUINCY MA
2014-12-03 617-863-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SOMERVILLE MA
2014-12-03 617-863-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SOMERVILLE MA
2014-11-11 617-795-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2014-11-11 617-795-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2014-11-11 617-917-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2014-11-11 617-917-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2014-09-16 617-580-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHARLESTN MA
2014-09-16 617-580-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHARLESTN MA
2014-09-16 617-658-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.