NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

14 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 413
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6
BANDWIDTH.COM CLEC, LLC - MA 5
NEW CINGULAR WIRELESS PCS, LLC - DC 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 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
2023-12-06 413-510-4XXX 4000–4999Assigned NUSO, LLC 732J HOLYOKE MA
2023-12-06 413-510-5XXX 5000–5999Assigned NUSO, LLC 732J HOLYOKE MA
2023-11-13 413-428-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 AMHERST MA
2023-11-09 413-432-4XXX 4000–4999Assigned NUSO, LLC 478J SPRINGFLD MA
2023-11-09 413-432-5XXX 5000–5999Assigned NUSO, LLC 478J SPRINGFLD MA
2023-11-09 413-510-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLYOKE MA
2023-11-09 413-510-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLYOKE MA
2023-11-09 413-510-8XXX 8000–8999Assigned METROPCS, INC. 5562 HOLYOKE MA
2023-11-09 413-510-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLYOKE MA
2023-11-02 413-558-6XXX 6000–6999Assigned TC SYSTEMS, INC. 7135 WARREN MA
2023-10-20 413-942-1XXX 1000–1999Assigned COMMIO, LLC 939H COLRAIN MA
2023-10-20 413-942-2XXX 2000–2999Assigned COMMIO, LLC 939H COLRAIN MA
2023-10-20 413-942-3XXX 3000–3999Assigned COMMIO, LLC 939H COLRAIN MA
2023-10-20 413-942-4XXX 4000–4999Assigned COMMIO, LLC 939H COLRAIN MA
2023-10-20 413-942-5XXX 5000–5999Assigned COMMIO, LLC 939H COLRAIN MA
2023-10-20 413-946-0XXX 0000–0999Assigned COMMIO, LLC 939H HINSDALE MA
2023-10-20 413-946-1XXX 1000–1999Assigned COMMIO, LLC 939H HINSDALE MA
2023-10-20 413-946-2XXX 2000–2999Assigned COMMIO, LLC 939H HINSDALE MA
2023-10-20 413-946-8XXX 8000–8999Assigned COMMIO, LLC 939H HINSDALE MA
2023-10-20 413-946-9XXX 9000–9999Assigned COMMIO, LLC 939H HINSDALE MA
2023-10-17 413-479-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J GREENFIELD MA
2023-10-11 413-673-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 GREATBNGTN MA
2023-10-04 413-484-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D PALMER MA
2023-10-04 413-484-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D PALMER MA
2023-10-04 413-484-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D PALMER MA
2023-10-04 413-484-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D PALMER MA
2023-10-04 413-484-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D PALMER MA
2023-10-04 413-603-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D NORTHADAMS MA
2023-10-04 413-603-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D NORTHADAMS MA
2023-10-04 413-603-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D NORTHADAMS MA
2023-10-04 413-847-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D LONGMEADOW MA
2023-10-04 413-847-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D LONGMEADOW MA
2023-10-04 413-847-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D LONGMEADOW MA
2023-10-04 413-847-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D LONGMEADOW MA
2023-10-04 413-847-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D LONGMEADOW MA
2023-09-29 413-457-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2023-09-29 413-457-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2023-09-26 413-501-0XXX 0000–0999Assigned COMMIO, LLC 939H SHEFFIELD MA
2023-09-26 413-501-1XXX 1000–1999Assigned COMMIO, LLC 939H SHEFFIELD MA
2023-09-26 413-501-2XXX 2000–2999Assigned COMMIO, LLC 939H SHEFFIELD MA
2023-09-26 413-501-3XXX 3000–3999Assigned COMMIO, LLC 939H SHEFFIELD MA
2023-09-26 413-501-4XXX 4000–4999Assigned COMMIO, LLC 939H SHEFFIELD MA
2023-09-26 413-503-0XXX 0000–0999Assigned COMMIO, LLC 939H WARREN MA
2023-09-26 413-503-1XXX 1000–1999Assigned COMMIO, LLC 939H WARREN MA
2023-09-26 413-503-2XXX 2000–2999Assigned COMMIO, LLC 939H WARREN MA
2023-09-26 413-503-3XXX 3000–3999Assigned COMMIO, LLC 939H WARREN MA
2023-09-26 413-503-4XXX 4000–4999Assigned COMMIO, LLC 939H WARREN MA
2023-09-26 413-506-0XXX 0000–0999Assigned COMMIO, LLC 939H HATFIELD MA
2023-09-26 413-506-1XXX 1000–1999Assigned COMMIO, LLC 939H HATFIELD MA
2023-09-26 413-506-2XXX 2000–2999Assigned COMMIO, LLC 939H HATFIELD 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.