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
2021-07-20 617-518-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D CHARLESTN MA
2021-07-20 617-518-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D CHARLESTN MA
2021-07-16 617-540-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2021-07-16 617-540-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2021-07-16 617-665-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2021-07-16 617-802-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2021-06-15 617-430-8XXX 8000–8999Assigned COMMIO, LLC 939H CAMBRIDGE MA
2021-06-15 617-430-9XXX 9000–9999Assigned COMMIO, LLC 939H CAMBRIDGE MA
2021-06-15 617-465-9XXX 9000–9999Assigned COMMIO, LLC 939H CAMBRIDGE MA
2021-06-15 617-468-9XXX 9000–9999Assigned COMMIO, LLC 939H CAMBRIDGE MA
2021-06-11 617-380-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D CHARLESTN MA
2021-06-11 617-380-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D CHARLESTN MA
2021-06-11 617-789-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D BRIGHTON MA
2021-06-11 617-789-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D BRIGHTON MA
2021-06-11 617-789-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D BRIGHTON MA
2021-06-11 617-789-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D BRIGHTON MA
2021-06-11 617-802-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2021-06-11 617-802-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2021-06-11 617-802-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2021-06-11 617-802-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2021-05-18 617-604-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D HYDE PARK MA
2021-05-18 617-604-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D HYDE PARK MA
2021-05-18 617-604-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D HYDE PARK MA
2021-05-18 617-604-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D HYDE PARK MA
2021-04-26 617-263-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H BOSTON MA
2021-04-16 617-272-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D HYDE PARK MA
2021-04-16 617-272-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D HYDE PARK MA
2021-04-16 617-272-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D HYDE PARK MA
2021-04-16 617-272-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D HYDE PARK MA
2021-04-07 617-639-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 QUINCY MA
2021-04-07 617-639-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 QUINCY MA
2021-04-07 617-729-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 QUINCY MA
2021-04-07 617-837-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 QUINCY MA
2021-03-23 617-440-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D SOMERVILLE MA
2021-03-23 617-741-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D SOMERVILLE MA
2021-03-23 617-749-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D ROXBURY MA
2021-03-23 617-749-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D ROXBURY MA
2021-03-23 617-819-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D CHELSEA MA
2021-03-23 617-841-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D WINTHROP MA
2021-03-23 617-895-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D EASTBOSTON MA
2021-03-23 617-958-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D CHELSEA MA
2021-03-23 617-958-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D CHELSEA MA
2021-03-15 617-749-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H ROXBURY MA
2021-03-10 617-408-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H HYDE PARK MA
2021-03-09 617-819-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CHELSEA MA
2021-03-01 617-802-2XXX 2000–2999Assigned AIRUS, INC. - MA 428H CAMBRIDGE MA
2021-03-01 617-802-3XXX 3000–3999Assigned AIRUS, INC. - MA 428H CAMBRIDGE MA
2021-03-01 617-915-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D MILTON MA
2021-03-01 617-915-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D MILTON MA
2021-03-01 617-915-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D MILTON 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.