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
2005-05-16 617-955-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMBRIDGE MA
2005-05-12 617-412-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2005-05-12 617-959-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2005-05-12 617-959-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2005-05-10 617-866-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CAMBRIDGE MA
2005-05-10 617-866-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CAMBRIDGE MA
2005-05-09 617-888-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2005-05-09 617-888-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2005-05-09 617-888-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2005-05-05 617-217-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2005-05-05 617-412-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2005-05-05 617-412-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2005-04-22 617-202-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2005-04-18 617-412-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2005-04-18 617-412-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2005-04-18 617-934-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 QUINCY MA
2005-04-18 617-934-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 QUINCY MA
2005-04-13 617-314-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BOSTON MA
2005-04-13 617-314-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BOSTON MA
2005-04-13 617-314-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BOSTON MA
2005-04-13 617-314-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BOSTON MA
2005-04-13 617-314-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BOSTON MA
2005-04-13 617-314-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BOSTON MA
2005-04-08 617-595-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BOSTON MA
2005-04-08 617-830-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BOSTON MA
2005-04-08 617-830-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D BOSTON MA
2005-04-08 617-830-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D BOSTON MA
2005-03-22 617-606-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 ROXBURY MA
2005-03-22 617-606-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 ROXBURY MA
2005-03-22 617-606-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 ROXBURY MA
2005-03-22 617-606-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 ROXBURY MA
2005-03-21 617-830-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2005-03-21 617-830-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2005-03-21 617-830-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2005-03-21 617-830-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2005-03-21 617-830-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2005-03-21 617-830-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2005-03-18 617-209-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BELMONT MA
2005-03-18 617-213-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NEWTON MA
2005-03-18 617-307-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SO BOSTON MA
2005-03-08 617-307-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SO BOSTON MA
2005-03-08 617-379-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J DORCHESTER MA
2005-03-08 617-405-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J QUINCY MA
2005-03-08 617-516-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ROXBURY MA
2005-03-08 617-874-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EASTBOSTON MA
2005-03-08 617-910-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HYDE PARK MA
2005-03-04 617-659-9XXX 9000–9999Assigned VERIZON NEW ENGLAND INC. 9102 NEWTON MA
2005-03-03 617-206-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BRIGHTON MA
2005-03-03 617-209-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BELMONT MA
2005-03-03 617-396-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BROOKLINE 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.