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
2004-09-24 617-820-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-09-24 617-820-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-09-21 617-431-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NEWTON MA
2004-09-15 617-433-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J MILTON MA
2004-09-13 617-475-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2004-09-13 617-820-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-09-13 617-959-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-09-13 617-959-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-09-13 617-959-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-09-08 617-820-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2004-09-07 617-913-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2004-09-07 617-913-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2004-09-03 617-959-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2004-09-03 617-959-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2004-08-27 617-959-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-08-27 617-959-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-08-27 617-959-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-08-18 617-299-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CAMBRIDGE MA
2004-08-18 617-299-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CAMBRIDGE MA
2004-08-11 617-938-0XXX 0000–0999Assigned METROPCS, INC. 5562 BOSTON MA
2004-08-11 617-938-1XXX 1000–1999Assigned METROPCS, INC. 5562 BOSTON MA
2004-08-11 617-938-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-08-11 617-938-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-08-10 617-841-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J WINTHROP MA
2004-08-09 617-206-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BRIGHTON MA
2004-08-09 617-209-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BELMONT MA
2004-08-09 617-326-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 DORCHESTER MA
2004-08-09 617-440-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SOMERVILLE MA
2004-08-09 617-544-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 EVERETT MA
2004-08-09 617-580-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CHARLESTN MA
2004-08-09 617-599-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMBRIDGE MA
2004-08-09 617-600-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WATERTOWN MA
2004-08-09 617-910-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 HYDE PARK MA
2004-08-06 617-938-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2004-08-06 617-938-6XXX 6000–6999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 BOSTON MA
2004-08-06 617-938-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-08-06 617-938-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-08-06 617-938-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-07-22 617-417-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMBRIDGE MA
2004-07-15 617-301-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMBRIDGE MA
2004-07-15 617-301-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMBRIDGE MA
2004-07-15 617-301-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMBRIDGE MA
2004-07-14 617-372-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-07-14 617-832-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-07-07 617-447-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2004-07-07 617-447-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2004-07-07 617-447-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2004-07-07 617-447-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2004-07-07 617-447-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-07-07 617-447-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON 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.