NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 857
BANDWIDTH.COM CLEC, LLC - MA 1
AHOI LLC 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
2021-03-23 857-858-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D NEWTON MA
2021-03-23 857-858-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D NEWTON MA
2021-03-18 857-847-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H DORCHESTER MA
2021-03-18 857-867-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H BROOKLINE MA
2021-03-16 857-349-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H WINTHROP MA
2021-03-16 857-367-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H WATERTOWN MA
2021-03-15 857-754-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H QUINCY MA
2021-03-15 857-766-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SO BOSTON MA
2021-03-15 857-995-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SOMERVILLE MA
2021-03-12 857-419-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H MILTON MA
2021-03-12 857-810-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-03-12 857-858-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H NEWTON MA
2021-03-09 857-341-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H BELMONT MA
2021-03-09 857-355-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H EVERETT MA
2021-03-09 857-365-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H BOSTON MA
2021-03-09 857-380-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H EASTBOSTON MA
2021-03-09 857-425-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H BRIGHTON MA
2021-03-09 857-837-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CHARLESTN MA
2021-03-01 857-754-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D QUINCY MA
2021-03-01 857-754-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D QUINCY MA
2021-02-10 857-340-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D BROOKLINE MA
2021-02-10 857-340-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D BROOKLINE MA
2021-02-10 857-340-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D BROOKLINE MA
2021-02-10 857-887-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D JAMAICA PL MA
2021-02-10 857-887-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D JAMAICA PL MA
2021-02-10 857-887-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D JAMAICA PL MA
2021-02-10 857-887-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D JAMAICA PL MA
2021-02-05 857-341-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D BELMONT MA
2021-02-05 857-341-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D BELMONT MA
2021-02-05 857-349-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D WINTHROP MA
2021-02-05 857-349-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D WINTHROP MA
2021-02-05 857-837-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D CHARLESTN MA
2021-02-05 857-837-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D CHARLESTN MA
2021-02-04 857-367-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D WATERTOWN MA
2021-02-04 857-367-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D WATERTOWN MA
2021-02-04 857-367-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D WATERTOWN MA
2021-02-04 857-380-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D EASTBOSTON MA
2021-02-04 857-380-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D EASTBOSTON MA
2021-02-04 857-380-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D EASTBOSTON MA
2021-02-04 857-380-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D EASTBOSTON MA
2021-02-04 857-766-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D SO BOSTON MA
2021-02-04 857-766-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D SO BOSTON MA
2021-02-04 857-766-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D SO BOSTON MA
2021-02-02 857-340-2XXX 2000–2999Assigned TELNYX LLC 073H BROOKLINE MA
2021-02-02 857-706-0XXX 0000–0999Assigned TELNYX LLC 073H CAMBRIDGE MA
2021-02-02 857-754-0XXX 0000–0999Assigned TELNYX LLC 073H QUINCY MA
2021-02-02 857-837-9XXX 9000–9999Assigned TELNYX LLC 073H CHARLESTN MA
2021-01-29 857-578-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D NEWTON MA
2021-01-29 857-578-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D NEWTON MA
2021-01-29 857-578-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D NEWTON 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.