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

Recent thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2022-12-08	231-455-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	PENTWATER	MI
2022-12-06	231-364-9XXX	9000–9999	Assigned	ONVOY, LLCV - MI	543C	NORTHPORT	MI
2022-12-05	231-320-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	TRCHRIVBDG	MI
2022-12-05	231-374-6XXX	6000–6999	Assigned	ONVOY, LLCV - MI	543C	SHELBY	MI
2022-12-05	231-415-1XXX	1000–1999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	DUBLIN	MI
2022-11-29	231-247-9XXX	9000–9999	Assigned	ONVOY, LLCV - MI	543C	WILLIAMSBG	MI
2022-11-29	231-270-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	BOYNE CITY	MI
2022-11-29	231-278-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	HESPERIA	MI
2022-11-29	231-289-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	CHARLEVOIX	MI
2022-11-29	231-321-3XXX	3000–3999	Assigned	ONVOY, LLCV - MI	543C	ELMIRA	MI
2022-11-29	231-379-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	ONEKAMA	MI
2022-11-29	231-396-2XXX	2000–2999	Assigned	PENINSULA FIBER NETWORK, LLC - MI	116F	CADILLAC	MI
2022-11-29	231-443-7XXX	7000–7999	Assigned	ONVOY, LLCV - MI	543C	HONOR	MI
2022-11-29	231-566-5XXX	5000–5999	Assigned	ONVOY, LLCV - MI	543C	HARRIETTA	MI
2022-11-29	231-699-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	FOUNTAIN	MI
2022-11-22	231-293-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	FRANKFORT	MI
2022-11-22	231-297-5XXX	5000–5999	Assigned	ONVOY, LLCV - MI	543C	KINGSLEY	MI
2022-11-22	231-298-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	IRONS	MI
2022-11-18	231-663-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	MESICK	MI
2022-11-10	231-402-6XXX	6000–6999	Assigned	ONVOY, LLCV - MI	543C	MUSKEGON	MI
2022-11-04	231-390-1XXX	1000–1999	Assigned	COMMIO, LLC	939H	BIG RAPIDS	MI
2022-11-04	231-410-0XXX	0000–0999	Assigned	COMMIO, LLC	939H	MANISTEE	MI
2022-11-02	231-364-1XXX	1000–1999	Assigned	COMMIO, LLC	939H	NORTHPORT	MI
2022-11-02	231-500-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	WHITEHALL	MI
2022-11-02	231-663-1XXX	1000–1999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	MESICK	MI
2022-10-27	231-296-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	FREMONT	MI
2022-10-19	231-732-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	MORLEY	MI
2022-10-07	231-338-0XXX	0000–0999	Assigned	COMMIO, LLC	939H	BALDWIN	MI
2022-09-29	231-834-3XXX	3000–3999	Assigned	BANDWIDTH.COM CLEC, LLC - MI	991E	GRANT	MI
2022-09-01	231-224-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	FREMONT	MI
2022-09-01	231-401-7XXX	7000–7999	Assigned	ONVOY, LLCV - MI	543C	TRAVERSECY	MI
2022-09-01	231-401-8XXX	8000–8999	Assigned	ONVOY, LLCV - MI	543C	TRAVERSECY	MI
2022-09-01	231-746-2XXX	2000–2999	Assigned	ONVOY, LLCV - MI	543C	CHEBOYGAN	MI
2022-09-01	231-746-3XXX	3000–3999	Assigned	ONVOY, LLCV - MI	543C	CHEBOYGAN	MI
2022-08-25	231-862-4XXX	4000–4999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	HOXEYVILLE	MI
2022-08-24	231-974-2XXX	2000–2999	Assigned	BANDWIDTH.COM CLEC, LLC - MI	991E	GRANT	MI
2022-08-12	231-397-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MANISTEE	MI
2022-08-12	231-397-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MANISTEE	MI
2022-08-12	231-410-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MANISTEE	MI
2022-08-12	231-550-4XXX	4000–4999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PETOSKEY	MI
2022-08-12	231-550-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PETOSKEY	MI
2022-08-12	231-550-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PETOSKEY	MI
2022-08-12	231-550-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PETOSKEY	MI
2022-07-21	231-396-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	CADILLAC	MI
2022-07-21	231-402-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MUSKEGON	MI
2022-07-21	231-402-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MUSKEGON	MI
2022-06-22	231-387-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PETOSKEY	MI
2022-06-22	231-550-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PETOSKEY	MI
2022-06-22	231-550-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PETOSKEY	MI
2022-06-09	231-397-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MANISTEE	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.