NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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
2010-04-07 617-874-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2010-04-07 617-925-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BRIGHTON MA
2010-03-23 617-207-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D WINTHROP MA
2010-03-23 617-219-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D NEWTON MA
2010-03-23 617-249-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D QUINCY MA
2010-03-23 617-286-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D CHARLESTN MA
2010-03-23 617-393-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D WATERTOWN MA
2010-03-23 617-396-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D BROOKLINE MA
2010-03-23 617-410-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D EVERETT MA
2010-03-23 617-433-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D MILTON MA
2010-03-23 617-446-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D DORCHESTER MA
2010-03-23 617-616-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D SOMERVILLE MA
2010-03-23 617-622-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D SO BOSTON MA
2010-03-23 617-682-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2010-03-23 617-819-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D CHELSEA MA
2010-03-23 617-858-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D ROXBURY MA
2010-03-23 617-925-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D BRIGHTON MA
2010-03-22 617-855-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D BELMONT MA
2010-03-19 617-701-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J SO BOSTON MA
2010-03-10 617-874-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2010-03-04 617-866-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 CAMBRIDGE MA
2010-03-03 617-286-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHARLESTN MA
2010-03-03 617-394-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2010-02-03 617-419-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BOSTON MA
2010-02-03 617-528-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CAMBRIDGE MA
2010-02-03 617-528-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CAMBRIDGE MA
2010-02-03 617-871-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CAMBRIDGE MA
2010-02-03 617-871-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CAMBRIDGE MA
2010-01-22 617-383-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BROOKLINE MA
2010-01-22 617-383-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BROOKLINE MA
2010-01-22 617-981-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EASTBOSTON MA
2010-01-21 617-297-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E DORCHESTER MA
2010-01-21 617-297-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E DORCHESTER MA
2010-01-21 617-302-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E QUINCY MA
2010-01-21 617-302-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E QUINCY MA
2010-01-21 617-329-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WINTHROP MA
2010-01-21 617-544-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2010-01-21 617-615-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MILTON MA
2010-01-21 617-819-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHELSEA MA
2010-01-21 617-855-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BELMONT MA
2010-01-21 617-858-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E ROXBURY MA
2010-01-21 617-858-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E ROXBURY MA
2010-01-21 617-863-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SOMERVILLE MA
2010-01-21 617-863-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SOMERVILLE MA
2010-01-19 617-398-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHARLESTN MA
2010-01-19 617-564-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2010-01-19 617-564-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2010-01-19 617-600-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WATERTOWN MA
2010-01-19 617-752-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SO BOSTON MA
2010-01-19 617-903-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BRIGHTON MA

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.