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
2006-07-10 617-910-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2006-07-10 617-910-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2006-07-10 617-913-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2006-06-30 617-670-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2006-06-27 617-849-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BOSTON MA
2006-06-21 617-307-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SO BOSTON MA
2006-06-20 617-939-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BOSTON MA
2006-06-15 617-379-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 DORCHESTER MA
2006-06-09 617-401-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J CAMBRIDGE MA
2006-06-09 617-401-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J CAMBRIDGE MA
2006-06-05 617-990-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2006-06-05 617-990-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2006-06-02 617-208-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BRIGHTON MA
2006-05-23 617-401-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2006-05-23 617-401-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2006-05-23 617-600-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WATERTOWN MA
2006-05-17 617-418-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 EASTBOSTON MA
2006-05-17 617-874-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 EASTBOSTON MA
2006-05-11 617-692-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2006-05-10 617-674-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2006-05-10 617-674-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2006-05-09 617-505-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BROOKLINE MA
2006-05-09 617-505-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BROOKLINE MA
2006-04-28 617-294-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 EVERETT MA
2006-04-21 617-690-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J MILTON MA
2006-04-17 617-208-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BRIGHTON MA
2006-04-17 617-274-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BROOKLINE MA
2006-04-17 617-553-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J JAMAICA PL MA
2006-04-13 617-708-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J ROXBURY MA
2006-04-13 617-708-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ROXBURY MA
2006-04-10 617-934-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 QUINCY MA
2006-04-05 617-990-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2006-03-31 617-440-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SOMERVILLE MA
2006-03-30 617-329-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WINTHROP MA
2006-03-30 617-340-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NEWTON MA
2006-03-30 617-360-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HYDE PARK MA
2006-03-30 617-615-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MILTON MA
2006-03-29 617-826-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BELMONT MA
2006-03-13 617-477-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J JAMAICA PL MA
2006-03-07 617-913-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2006-03-07 617-990-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2006-03-03 617-301-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J CAMBRIDGE MA
2006-02-27 617-209-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BELMONT MA
2006-02-24 617-301-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J CAMBRIDGE MA
2006-02-15 617-334-3XXX 3000–3999Assigned METROPCS, INC. 5562 SO BOSTON MA
2006-02-15 617-334-4XXX 4000–4999Assigned METROPCS, INC. 5562 SO BOSTON MA
2006-02-15 617-602-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2006-02-06 617-833-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYDE PARK MA
2006-02-02 617-506-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J DORCHESTER MA
2006-02-02 617-506-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J DORCHESTER 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.