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
2008-02-19 617-684-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SOMERVILLE MA
2008-02-19 617-800-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2008-02-15 617-652-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ROXBURY MA
2008-02-11 617-453-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CAMBRIDGE MA
2008-02-08 617-284-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - MA 316E SOMERVILLE MA
2008-02-08 617-300-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2008-02-08 617-313-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - MA 316E MILTON MA
2008-02-08 617-334-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - MA 316E SO BOSTON MA
2008-02-08 617-398-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - MA 316E CHARLESTN MA
2008-02-08 617-714-1XXX 1000–1999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 CAMBRIDGE MA
2008-02-08 617-874-2XXX 2000–2999Assigned YMAX COMMUNICATIONS CORP. - MA 316E EASTBOSTON MA
2008-02-07 617-208-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - MA 316E BRIGHTON MA
2008-02-07 617-237-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MA 316E QUINCY MA
2008-02-07 617-252-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - MA 316E CAMBRIDGE MA
2008-02-07 617-294-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - MA 316E EVERETT MA
2008-02-07 617-505-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BROOKLINE MA
2008-02-07 617-516-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - MA 316E ROXBURY MA
2008-02-07 617-942-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - MA 316E JAMAICA PL MA
2008-02-06 617-981-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2008-02-05 617-379-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 DORCHESTER MA
2008-02-05 617-379-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 DORCHESTER MA
2008-02-04 617-340-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NEWTON MA
2008-02-04 617-340-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NEWTON MA
2008-02-04 617-674-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2008-02-04 617-674-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2008-01-31 617-409-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CHELSEA MA
2008-01-31 617-409-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CHELSEA MA
2008-01-31 617-673-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WATERTOWN MA
2008-01-25 617-237-3XXX 3000–3999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 QUINCY MA
2008-01-23 617-860-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BROOKLINE MA
2008-01-22 617-245-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2008-01-22 617-250-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2008-01-22 617-326-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 DORCHESTER MA
2008-01-22 617-340-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NEWTON MA
2008-01-22 617-409-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CHELSEA MA
2008-01-22 617-826-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BELMONT MA
2008-01-21 617-360-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 HYDE PARK MA
2008-01-17 617-379-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 DORCHESTER MA
2008-01-17 617-409-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CHELSEA MA
2008-01-17 617-431-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NEWTON MA
2008-01-16 617-299-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2008-01-16 617-299-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2008-01-15 617-402-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J WATERTOWN MA
2008-01-15 617-402-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J WATERTOWN MA
2008-01-15 617-999-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 CAMBRIDGE MA
2008-01-08 617-386-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CAMBRIDGE MA
2007-12-19 617-942-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J JAMAICA PL MA
2007-11-19 617-401-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CAMBRIDGE MA
2007-11-12 617-948-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BOSTON MA
2007-11-05 617-516-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY 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.