NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 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, all time — NPA 248
ONVOY SPECTRUM, LLC 40
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
2024-09-24 248-562-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H W BLOOMFLD MI
2024-09-24 248-562-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H W BLOOMFLD MI
2024-09-24 248-862-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H W BLOOMFLD MI
2024-05-28 248-243-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H AUBURN HTS MI
2024-05-28 248-257-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H DRAYTON PL MI
2024-05-28 248-264-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H SOUTH LYON MI
2024-05-28 248-274-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H OXFORD MI
2024-05-01 248-201-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SOUTHFIELD MI
2024-05-01 248-386-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SOUTHFIELD MI
2023-05-17 248-248-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2023-05-17 248-248-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2023-05-17 248-248-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2023-05-17 248-248-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2023-05-17 248-248-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2023-05-17 248-248-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2023-05-17 248-248-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2023-05-17 248-248-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2023-05-17 248-248-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2023-05-17 248-248-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2022-03-17 248-315-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H TROY MI
2022-01-27 248-315-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H TROY MI
2021-12-17 248-274-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H OXFORD MI
2021-12-17 248-274-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H OXFORD MI
2021-12-17 248-315-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H TROY MI
2021-12-17 248-315-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H TROY MI
2021-12-17 248-315-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H TROY MI
2021-12-17 248-491-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SOUTH LYON MI
2021-12-17 248-491-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H SOUTH LYON MI
2021-12-17 248-962-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2021-12-17 248-962-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2021-11-02 248-834-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H LAKE ORION MI
2021-05-18 248-883-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H PONTIAC MI
2021-05-17 248-257-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H DRAYTON PL MI
2021-05-17 248-779-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H COMMERCE MI
2021-05-17 248-783-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H LAKE ORION MI
2021-04-23 248-942-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CLARKSTON MI
2021-04-23 248-942-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H CLARKSTON MI
2020-06-25 248-927-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CLARKSTON MI
2020-06-25 248-927-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H CLARKSTON MI
2020-06-25 248-927-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CLARKSTON MI

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.