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
2006-02-01 617-990-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 HYDE PARK MA
2006-01-23 617-229-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CAMBRIDGE MA
2006-01-17 617-383-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J BROOKLINE MA
2006-01-17 617-455-3XXX 3000–3999Assigned VERIZON NEW ENGLAND INC. 9102 EASTBOSTON MA
2006-01-06 617-206-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2006-01-06 617-206-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2006-01-06 617-315-5XXX 5000–5999Assigned METROPCS, INC. 5562 SO BOSTON MA
2006-01-06 617-386-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CAMBRIDGE MA
2006-01-06 617-602-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2006-01-06 617-652-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2006-01-05 617-833-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2005-12-28 617-370-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CHELSEA MA
2005-12-27 617-467-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J NEWTON MA
2005-12-21 617-676-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J JAMAICA PL MA
2005-12-09 617-297-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 DORCHESTER MA
2005-11-22 617-910-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J HYDE PARK MA
2005-11-16 617-213-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWTON MA
2005-11-16 617-213-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWTON MA
2005-11-14 617-871-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J CAMBRIDGE MA
2005-11-11 617-229-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2005-11-11 617-229-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2005-11-11 617-229-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2005-11-04 617-336-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHELSEA MA
2005-11-04 617-336-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHELSEA MA
2005-11-03 617-833-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2005-11-01 617-506-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J DORCHESTER MA
2005-10-19 617-307-8XXX 8000–8999Assigned METROPCS, INC. 5562 SO BOSTON MA
2005-10-19 617-639-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 QUINCY MA
2005-10-18 617-418-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 EASTBOSTON MA
2005-10-18 617-418-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 EASTBOSTON MA
2005-10-17 617-202-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2005-10-17 617-318-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2005-10-14 617-657-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J QUINCY MA
2005-10-03 617-415-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BRIGHTON MA
2005-09-27 617-307-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SO BOSTON MA
2005-09-27 617-307-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SO BOSTON MA
2005-09-23 617-202-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J BRIGHTON MA
2005-09-19 617-716-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EASTBOSTON MA
2005-09-19 617-716-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EASTBOSTON MA
2005-09-07 617-276-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2005-09-07 617-313-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J MILTON MA
2005-09-07 617-516-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2005-09-07 617-903-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2005-09-02 617-207-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WINTHROP MA
2005-09-02 617-996-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SOMERVILLE MA
2005-08-29 617-863-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SOMERVILLE MA
2005-08-25 617-390-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 JAMAICA PL MA
2005-08-25 617-390-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 JAMAICA PL MA
2005-08-25 617-910-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 HYDE PARK MA
2005-08-24 617-440-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SOMERVILLE 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.