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
2021-10-21 413-255-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H GRANBY MA
2021-10-21 413-255-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H GRANBY MA
2021-10-21 413-305-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H SOUTHWICK MA
2021-10-21 413-305-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H SOUTHWICK MA
2021-10-21 413-430-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H HOLYOKE MA
2021-10-21 413-430-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H HOLYOKE MA
2021-10-21 413-481-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H BRIMFIELD MA
2021-10-21 413-481-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H BRIMFIELD MA
2021-10-21 413-616-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H OTIS MA
2021-10-21 413-616-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H OTIS MA
2021-10-21 413-724-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H WILLIAMSBG MA
2021-10-20 413-430-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D HOLYOKE MA
2021-10-20 413-430-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D HOLYOKE MA
2021-10-20 413-430-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D HOLYOKE MA
2021-10-20 413-430-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D HOLYOKE MA
2021-10-18 413-321-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D WARE MA
2021-10-18 413-483-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D ADAMS MA
2021-10-18 413-486-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D ELONGMEDOW MA
2021-10-18 413-614-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D NORTHAMPTN MA
2021-10-14 413-923-0XXX 0000–0999Assigned METROPCS, INC. 5562 NORTHAMPTN MA
2021-10-07 413-435-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2021-10-07 413-435-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2021-10-07 413-435-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2021-10-07 413-614-2XXX 2000–2999Assigned METROPCS, INC. 5562 NORTHAMPTN MA
2021-10-07 413-614-4XXX 4000–4999Assigned METROPCS, INC. 5562 NORTHAMPTN MA
2021-10-07 413-614-5XXX 5000–5999Assigned METROPCS, INC. 5562 NORTHAMPTN MA
2021-10-07 413-614-7XXX 7000–7999Assigned METROPCS, INC. 5562 NORTHAMPTN MA
2021-10-07 413-614-9XXX 9000–9999Assigned METROPCS, INC. 5562 NORTHAMPTN MA
2021-10-06 413-419-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2021-10-06 413-419-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2021-09-29 413-223-7XXX 7000–7999Assigned METROPCS, INC. 5562 GREENFIELD MA
2021-09-29 413-325-2XXX 2000–2999Assigned METROPCS, INC. 5562 GREENFIELD MA
2021-09-29 413-325-9XXX 9000–9999Assigned METROPCS, INC. 5562 GREENFIELD MA
2021-09-29 413-376-3XXX 3000–3999Assigned METROPCS, INC. 5562 GREENFIELD MA
2021-09-29 413-412-7XXX 7000–7999Assigned METROPCS, INC. 5562 NORTHADAMS MA
2021-09-29 413-432-2XXX 2000–2999Assigned NUSO, LLC 478J SPRINGFLD MA
2021-09-29 413-512-4XXX 4000–4999Assigned METROPCS, INC. 5562 GREENFIELD MA
2021-09-29 413-768-3XXX 3000–3999Assigned METROPCS, INC. 5562 GREENFIELD MA
2021-09-28 413-995-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LUDLOW MA
2021-09-28 413-995-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LUDLOW MA
2021-09-23 413-836-0XXX 0000–0999Assigned COMMIO, LLC 939H GREATBNGTN MA
2021-09-23 413-836-1XXX 1000–1999Assigned COMMIO, LLC 939H GREATBNGTN MA
2021-09-23 413-836-8XXX 8000–8999Assigned COMMIO, LLC 939H GREATBNGTN MA
2021-09-23 413-836-9XXX 9000–9999Assigned COMMIO, LLC 939H GREATBNGTN MA
2021-09-22 413-494-1XXX 1000–1999Assigned METROPCS, INC. 5562 PITTSFIELD MA
2021-09-22 413-553-8XXX 8000–8999Assigned METROPCS, INC. 5562 PITTSFIELD MA
2021-09-22 413-640-1XXX 1000–1999Assigned METROPCS, INC. 5562 PALMER MA
2021-09-22 413-640-5XXX 5000–5999Assigned METROPCS, INC. 5562 PALMER MA
2021-09-22 413-640-6XXX 6000–6999Assigned METROPCS, INC. 5562 PALMER MA
2021-09-22 413-640-9XXX 9000–9999Assigned METROPCS, INC. 5562 PALMER 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.