NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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, 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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-05-24 231-680-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H REED CITY MI
2021-05-24 231-685-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H RAVENNA MI
2021-05-24 231-707-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H NEWAYGO MI
2021-05-24 231-732-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H MORLEY MI
2021-05-24 231-751-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H WALLOON LK MI
2021-05-24 231-786-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H TRAVERSECY MI
2021-05-24 231-829-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H TUSTIN MI
2021-05-24 231-866-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SUTTONSBAY MI
2021-05-24 231-888-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H TWIN LAKE MI
2021-05-24 231-889-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H ONEKAMA MI
2021-05-24 231-936-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SCOTTVILLE MI
2021-05-20 231-212-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H INTERLOCHN MI
2021-05-20 231-251-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H LKLEELANAU MI
2021-05-20 231-272-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H KINGSLEY MI
2021-05-20 231-273-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H EASTPORT MI
2021-05-20 231-277-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H FOUNTAIN MI
2021-05-20 231-278-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H HESPERIA MI
2021-05-20 231-280-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H MANCELONA MI
2021-05-20 231-284-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H MANISTEE MI
2021-05-20 231-290-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H INDIAN RIV MI
2021-05-20 231-293-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H FRANKFORT MI
2021-05-20 231-296-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H FREMONT MI
2021-05-20 231-298-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H IRONS MI
2021-05-20 231-310-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H FALMOUTH MI
2021-05-20 231-354-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CORAL MI
2021-05-20 231-442-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H HARRIETTA MI
2021-05-20 231-443-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H HONOR MI
2021-05-20 231-447-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H HOLTON MI
2021-05-20 231-480-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H LUDINGTON MI
2021-05-20 231-559-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H MCBAIN MI
2021-05-20 231-626-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H LEVERING MI
2021-05-20 231-636-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H HOWARDCITY MI
2021-05-20 231-640-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H LAKE ANN MI
2021-05-20 231-646-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H ELLSWORTH MI
2021-05-20 231-681-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H FRUITPORT MI
2021-05-20 231-721-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H HART MI
2021-05-20 231-771-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H ELK RAPIDS MI
2021-05-20 231-790-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H FREESOIL MI
2021-05-20 231-800-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H LUTHER MI
2021-05-20 231-886-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H KALKASKA MI
2021-05-20 231-974-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H GRANT MI
2021-05-20 231-977-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H MACKINAWCY MI
2021-05-19 231-221-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C HARBOR SPG MI
2021-05-19 231-221-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C HARBOR SPG MI
2021-05-19 231-247-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C WILLIAMSBG MI
2021-05-19 231-261-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C LUDINGTON MI
2021-05-19 231-261-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C LUDINGTON MI
2021-05-19 231-262-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C ELMIRA MI
2021-05-19 231-279-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H BIG RAPIDS MI
2021-05-19 231-281-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CADILLAC MI

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.