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
2013-12-10 617-401-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2013-12-06 617-637-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 JAMAICA PL MA
2013-11-22 617-762-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J NEWTON MA
2013-11-13 617-712-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - MA 316E CHARLESTN MA
2013-11-11 617-369-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2013-11-11 617-371-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2013-11-11 617-373-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2013-11-11 617-892-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2013-11-11 617-946-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2013-11-11 617-961-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2013-11-06 617-318-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ROXBURY MA
2013-11-05 617-420-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D EVERETT MA
2013-10-23 617-352-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2013-10-23 617-352-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2013-10-23 617-352-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2013-10-23 617-356-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2013-09-30 617-485-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-30 617-564-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-30 617-564-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-30 617-564-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-30 617-564-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-30 617-564-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-30 617-581-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-30 617-581-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-30 617-581-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-30 617-581-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-30 617-581-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-30 617-581-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-30 617-631-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2013-09-19 617-337-4XXX 4000–4999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F CHARLESTN MA
2013-09-19 617-581-0XXX 0000–0999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F NEWTON MA
2013-09-18 617-286-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CHARLESTN MA
2013-09-18 617-870-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BRIGHTON MA
2013-09-11 617-751-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2013-09-11 617-751-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2013-09-11 617-906-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2013-09-11 617-982-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2013-09-06 617-481-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J QUINCY MA
2013-09-05 617-735-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROOKLINE MA
2013-09-03 617-595-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2013-08-28 617-405-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J QUINCY MA
2013-08-28 617-761-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CAMBRIDGE MA
2013-08-23 617-231-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WATERTOWN MA
2013-08-19 617-952-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHARLESTN MA
2013-08-19 617-952-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHARLESTN MA
2013-08-15 617-481-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J QUINCY MA
2013-08-15 617-944-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J EVERETT MA
2013-08-14 617-766-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J SO BOSTON MA
2013-08-13 617-431-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2013-08-08 617-765-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SO 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.