NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 351
ONVOY, LLC - MA 285
OMNIPOINT MIAMI E LICENSE, LLC 83
ONVOY SPECTRUM, LLC 74
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 40
PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 37
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
2021-08-03 351-224-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H BARRE MA
2021-07-23 351-234-5XXX 5000–5999Assigned FRACTEL, LLC 965H HAVERHILL MA
2021-07-20 351-225-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D BERLIN MA
2021-07-20 351-225-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D BERLIN MA
2021-07-16 351-215-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D HAVERHILL MA
2021-07-16 351-215-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D HAVERHILL MA
2021-07-16 351-218-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D ACTON MA
2021-07-16 351-218-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D ACTON MA
2021-07-16 351-224-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D BARRE MA
2021-07-16 351-224-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D BARRE MA
2021-07-16 351-353-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D HAVERHILL MA
2021-07-16 351-353-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D HAVERHILL MA
2021-07-16 351-357-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D ORANGE MA
2021-07-16 351-357-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D ORANGE MA
2021-07-16 351-358-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D PEPPERELL MA
2021-07-16 351-358-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D PEPPERELL MA
2021-07-16 351-359-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D SHIRLEY MA
2021-07-16 351-359-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D SHIRLEY MA
2021-07-15 351-345-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D HUDSON MA
2021-07-15 351-345-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D HUDSON MA
2021-07-15 351-352-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D GEORGETOWN MA
2021-07-15 351-352-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D GEORGETOWN MA
2021-07-15 351-400-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D ESSEX MA
2021-07-15 351-465-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D MANCHESTER MA
2021-07-15 351-465-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D MANCHESTER MA
2021-07-15 351-501-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D HUBBARDSTN MA
2021-07-15 351-666-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D PEABODY MA
2021-07-15 351-800-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D WINCHENDON MA
2021-06-30 351-218-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ACTON MA
2021-06-30 351-218-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ACTON MA
2021-06-30 351-218-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ACTON MA
2021-06-22 351-214-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D ROCKPORT MA
2021-06-22 351-214-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D ROCKPORT MA
2021-06-22 351-361-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D ASHBY MA
2021-06-14 351-223-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D BEVERLY MA
2021-06-14 351-223-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D BEVERLY MA
2021-06-14 351-252-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D ROWLEY MA
2021-06-14 351-252-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D ROWLEY MA
2021-06-14 351-322-2XXX 2000–2999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F LOWELL MA
2021-06-11 351-203-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D TYNGSBORO MA
2021-06-11 351-203-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D TYNGSBORO MA
2021-06-11 351-212-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D DANVERS MA
2021-06-11 351-212-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D DANVERS MA
2021-06-11 351-218-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D ACTON MA
2021-06-11 351-218-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D ACTON MA
2021-06-11 351-251-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D GROTON MA
2021-06-11 351-251-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D GROTON MA
2021-06-11 351-253-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D ATHOLFKLN MA
2021-06-11 351-352-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D GEORGETOWN MA
2021-06-11 351-352-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D GEORGETOWN 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.