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 517

ONVOY, LLCV - MI 531

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

Recent thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2024-04-15	517-514-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	CLINTON	MI
2024-04-15	517-514-5XXX	5000–5999	Assigned	ONVOY, LLCV - MI	543C	CLINTON	MI
2023-08-30	517-237-0XXX	0000–0999	Assigned	ONVOY, LLCV - MI	543C	LANSING	MI
2023-08-04	517-261-0XXX	0000–0999	Assigned	ONVOY, LLCV - MI	543C	GRANDLEDGE	MI
2023-08-04	517-314-0XXX	0000–0999	Assigned	ONVOY, LLCV - MI	543C	JACKSON	MI
2023-08-04	517-682-6XXX	6000–6999	Assigned	ONVOY, LLCV - MI	543C	BLISSFIELD	MI
2023-08-04	517-793-0XXX	0000–0999	Assigned	ONVOY, LLCV - MI	543C	LITCHFIELD	MI
2023-08-04	517-929-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	HOMER	MI
2023-07-14	517-537-5XXX	5000–5999	Assigned	ONVOY, LLCV - MI	543C	HOWELL	MI
2023-07-14	517-540-5XXX	5000–5999	Assigned	ONVOY, LLCV - MI	543C	HOWELL	MI
2023-07-14	517-553-0XXX	0000–0999	Assigned	ONVOY, LLCV - MI	543C	HOWELL	MI
2023-07-14	517-553-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	HOWELL	MI
2023-07-14	517-553-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	HOWELL	MI
2023-07-14	517-553-6XXX	6000–6999	Assigned	ONVOY, LLCV - MI	543C	HOWELL	MI
2023-07-14	517-758-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	HOLT	MI
2023-07-14	517-758-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	HOLT	MI
2023-07-14	517-758-3XXX	3000–3999	Assigned	ONVOY, LLCV - MI	543C	HOLT	MI
2023-07-14	517-758-9XXX	9000–9999	Assigned	ONVOY, LLCV - MI	543C	HOLT	MI
2023-07-14	517-786-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	CHARLOTTE	MI
2023-07-14	517-786-5XXX	5000–5999	Assigned	ONVOY, LLCV - MI	543C	CHARLOTTE	MI
2023-07-14	517-786-6XXX	6000–6999	Assigned	ONVOY, LLCV - MI	543C	CHARLOTTE	MI
2023-07-05	517-352-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	BATH	MI
2023-07-05	517-354-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	LAINGSBURG	MI
2023-07-05	517-359-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	STOCKBDG	MI
2023-07-05	517-365-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	WEBBERVL	MI
2023-07-05	517-370-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	MONTGOMERY	MI
2023-06-30	517-297-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	HILLSDALE	MI
2023-06-30	517-299-8XXX	8000–8999	Assigned	ONVOY, LLCV - MI	543C	LANSING	MI
2023-06-30	517-299-9XXX	9000–9999	Assigned	ONVOY, LLCV - MI	543C	LANSING	MI
2023-06-30	517-910-9XXX	9000–9999	Assigned	ONVOY, LLCV - MI	543C	ONONDAGA	MI
2023-06-30	517-929-0XXX	0000–0999	Assigned	ONVOY, LLCV - MI	543C	HOMER	MI
2023-06-23	517-291-8XXX	8000–8999	Assigned	ONVOY, LLCV - MI	543C	ADRIAN	MI
2023-06-02	517-261-3XXX	3000–3999	Assigned	ONVOY, LLCV - MI	543C	GRANDLEDGE	MI
2023-06-02	517-271-9XXX	9000–9999	Assigned	ONVOY, LLCV - MI	543C	NASHVILLE	MI
2023-06-02	517-289-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	LANSING	MI
2023-06-02	517-289-3XXX	3000–3999	Assigned	ONVOY, LLCV - MI	543C	LANSING	MI
2023-06-02	517-289-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	LANSING	MI
2023-06-02	517-289-5XXX	5000–5999	Assigned	ONVOY, LLCV - MI	543C	LANSING	MI
2023-06-02	517-289-7XXX	7000–7999	Assigned	ONVOY, LLCV - MI	543C	LANSING	MI
2023-06-02	517-299-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	LANSING	MI
2023-06-02	517-314-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	JACKSON	MI
2023-06-02	517-399-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	EATON RPD	MI
2023-06-02	517-551-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	FOWLERVL	MI
2023-06-02	517-554-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	ALBION	MI
2023-06-02	517-837-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	TECUMSEH	MI
2023-06-02	517-924-9XXX	9000–9999	Assigned	ONVOY, LLCV - MI	543C	COLDWATER	MI
2023-04-04	517-261-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	GRANDLEDGE	MI
2023-04-04	517-275-3XXX	3000–3999	Assigned	ONVOY, LLCV - MI	543C	LANSING	MI
2023-04-04	517-275-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	LANSING	MI
2023-04-04	517-275-5XXX	5000–5999	Assigned	ONVOY, LLCV - MI	543C	LANSING	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.