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
2014-09-16 617-580-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHARLESTN MA
2014-09-16 617-658-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2014-09-16 617-658-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2014-09-09 617-396-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2014-09-09 617-487-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2014-09-09 617-860-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2014-09-09 617-991-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2014-08-29 617-405-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D QUINCY MA
2014-08-29 617-405-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D QUINCY MA
2014-08-29 617-977-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D BELMONT MA
2014-08-29 617-977-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D BELMONT MA
2014-08-26 617-870-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D BRIGHTON MA
2014-08-26 617-870-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D BRIGHTON MA
2014-08-21 617-483-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 QUINCY MA
2014-08-21 617-659-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-08-21 617-659-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-08-20 617-553-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D JAMAICA PL MA
2014-08-20 617-991-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROOKLINE MA
2014-08-20 617-991-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROOKLINE MA
2014-08-19 617-307-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D SO BOSTON MA
2014-08-19 617-372-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D BOSTON MA
2014-08-12 617-530-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J BOSTON MA
2014-08-06 617-602-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROXBURY MA
2014-08-05 617-396-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2014-08-05 617-483-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D QUINCY MA
2014-08-05 617-487-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2014-08-05 617-505-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2014-08-05 617-651-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2014-08-05 617-651-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2014-08-05 617-860-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2014-08-05 617-906-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2014-07-23 617-634-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2014-07-23 617-634-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2014-07-23 617-991-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROOKLINE MA
2014-07-10 617-870-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2014-06-24 617-217-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2014-06-24 617-386-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 CAMBRIDGE MA
2014-06-19 617-735-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROOKLINE MA
2014-06-19 617-831-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-06-19 617-831-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-06-19 617-831-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-06-19 617-831-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-06-17 617-352-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2014-06-17 617-352-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2014-06-17 617-352-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2014-06-17 617-352-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2014-06-17 617-352-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2014-06-17 617-352-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2014-06-17 617-356-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2014-06-17 617-356-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 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.