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
2021-01-29 857-578-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D NEWTON MA
2021-01-28 857-367-7XXX 7000–7999Assigned TC SYSTEMS, INC. 7135 WATERTOWN MA
2021-01-26 857-855-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-01-26 857-855-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-01-26 857-855-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-01-26 857-855-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-01-26 857-855-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-01-26 857-855-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-01-26 857-855-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-01-26 857-855-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-01-26 857-855-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-01-26 857-855-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D BOSTON MA
2021-01-25 857-887-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H JAMAICA PL MA
2021-01-25 857-887-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H JAMAICA PL MA
2021-01-25 857-887-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H JAMAICA PL MA
2021-01-20 857-412-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2021-01-20 857-412-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2021-01-20 857-412-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2021-01-20 857-412-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D CAMBRIDGE MA
2021-01-20 857-567-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D DORCHESTER MA
2021-01-20 857-567-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D DORCHESTER MA
2021-01-20 857-567-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D DORCHESTER MA
2021-01-20 857-567-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D DORCHESTER MA
2021-01-20 857-567-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D DORCHESTER MA
2021-01-06 857-340-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2021-01-06 857-340-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2020-12-22 857-369-0XXX 0000–0999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BOSTON MA
2020-12-22 857-369-1XXX 1000–1999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BOSTON MA
2020-12-22 857-369-2XXX 2000–2999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BOSTON MA
2020-12-22 857-369-3XXX 3000–3999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BOSTON MA
2020-12-22 857-369-4XXX 4000–4999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BOSTON MA
2020-12-22 857-369-5XXX 5000–5999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BOSTON MA
2020-12-22 857-369-6XXX 6000–6999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BOSTON MA
2020-12-22 857-369-7XXX 7000–7999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BOSTON MA
2020-12-22 857-369-8XXX 8000–8999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BOSTON MA
2020-12-22 857-369-9XXX 9000–9999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BOSTON MA
2020-12-21 857-887-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H JAMAICA PL MA
2020-12-10 857-837-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHARLESTN MA
2020-12-09 857-754-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D QUINCY MA
2020-12-09 857-754-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D QUINCY MA
2020-12-09 857-754-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D QUINCY MA
2020-12-09 857-754-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D QUINCY MA
2020-12-04 857-419-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D MILTON MA
2020-12-04 857-419-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D MILTON MA
2020-12-04 857-419-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D MILTON MA
2020-12-04 857-598-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D MILTON MA
2020-12-04 857-728-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D JAMAICA PL MA
2020-12-03 857-437-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D ROXBURY MA
2020-12-03 857-437-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D ROXBURY MA
2020-12-03 857-437-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D ROXBURY 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.