NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

7 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 231
NEW CINGULAR WIRELESS PCS, LLC - IL 2
EXIANT COMMUNICATIONS LLC 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-07-02 231-466-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H EVART MI
2021-07-01 231-294-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H FIFE LAKE MI
2021-07-01 231-364-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H NORTHPORT MI
2021-07-01 231-374-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H SHELBY MI
2021-06-28 231-284-0XXX 0000–0999Assigned PENINSULA FIBER NETWORK, LLC - MI 116F MANISTEE MI
2021-06-25 231-297-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C KINGSLEY MI
2021-06-25 231-297-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C KINGSLEY MI
2021-06-25 231-367-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C WOLVERINE MI
2021-06-23 231-298-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C IRONS MI
2021-06-17 231-293-8XXX 8000–8999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G FRANKFORT MI
2021-06-15 231-294-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C FIFE LAKE MI
2021-06-15 231-294-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C FIFE LAKE MI
2021-06-15 231-364-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C NORTHPORT MI
2021-06-15 231-364-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C NORTHPORT MI
2021-06-15 231-374-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C SHELBY MI
2021-06-15 231-374-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C SHELBY MI
2021-06-11 231-251-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C LKLEELANAU MI
2021-06-11 231-265-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C CORAL MI
2021-06-11 231-270-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C BOYNE CITY MI
2021-06-11 231-270-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C BOYNE CITY MI
2021-06-11 231-273-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C EASTPORT MI
2021-06-11 231-293-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C FRANKFORT MI
2021-06-11 231-296-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C FREMONT MI
2021-06-11 231-296-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C FREMONT MI
2021-06-11 231-321-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C ELMIRA MI
2021-06-11 231-324-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C HARBOR SPG MI
2021-06-11 231-324-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C HARBOR SPG MI
2021-06-11 231-389-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C HARRIETTA MI
2021-06-11 231-431-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C CLAM RIVER MI
2021-06-11 231-495-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C BELLAIRE MI
2021-06-11 231-567-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H MUSKEGON MI
2021-06-11 231-567-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H MUSKEGON MI
2021-06-11 231-567-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H MUSKEGON MI
2021-06-11 231-567-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H MUSKEGON MI
2021-06-11 231-588-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C ELLSWORTH MI
2021-06-11 231-900-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H MUSKEGON MI
2021-06-11 231-907-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C LUDINGTON MI
2021-06-11 231-907-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C LUDINGTON MI
2021-05-28 231-284-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MANISTEE MI
2021-05-28 231-284-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MANISTEE MI
2021-05-28 231-284-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MANISTEE MI
2021-05-25 231-321-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H ELMIRA MI
2021-05-24 231-202-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H MECOSTA MI
2021-05-24 231-247-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H WILLIAMSBG MI
2021-05-24 231-381-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H WHITECLOUD MI
2021-05-24 231-404-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H STANWOOD MI
2021-05-24 231-422-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H PELLSTON MI
2021-05-24 231-448-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H ST JAMES MI
2021-05-24 231-455-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H PENTWATER MI
2021-05-24 231-500-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H WHITEHALL 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.