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
2004-12-08 617-309-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-12-06 617-238-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ROXBURY MA
2004-12-06 617-390-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J JAMAICA PL MA
2004-12-06 617-418-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J EASTBOSTON MA
2004-12-06 617-671-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2004-12-02 617-459-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-12-02 617-459-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-12-02 617-997-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 EASTBOSTON MA
2004-12-01 617-202-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BRIGHTON MA
2004-12-01 617-297-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DORCHESTER MA
2004-12-01 617-337-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CHARLESTN MA
2004-12-01 617-383-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BROOKLINE MA
2004-11-30 617-203-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J EVERETT MA
2004-11-30 617-276-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J HYDE PARK MA
2004-11-30 617-313-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MILTON MA
2004-11-24 617-309-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2004-11-24 617-309-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2004-11-24 617-309-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2004-11-24 617-309-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2004-11-24 617-309-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2004-11-24 617-671-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-11-17 617-301-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CAMBRIDGE MA
2004-11-11 617-607-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WATERTOWN MA
2004-11-11 617-607-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WATERTOWN MA
2004-11-10 617-226-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BOSTON MA
2004-11-10 617-226-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BOSTON MA
2004-11-10 617-301-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CAMBRIDGE MA
2004-11-10 617-301-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CAMBRIDGE MA
2004-11-05 617-785-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-11-05 617-785-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-11-05 617-785-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-11-05 617-785-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-11-01 617-785-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-11-01 617-785-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-11-01 617-785-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-10-28 617-301-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J CAMBRIDGE MA
2004-10-28 617-402-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J WATERTOWN MA
2004-10-08 617-276-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2004-10-08 617-276-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2004-10-08 617-276-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2004-10-08 617-500-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2004-10-08 617-785-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2004-10-08 617-820-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2004-10-04 617-785-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-10-04 617-785-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-09-24 617-820-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-09-24 617-820-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-09-24 617-820-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-09-24 617-820-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2004-09-24 617-820-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON 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.