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

Recent thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2012-12-11	231-403-0XXX	0000–0999	Assigned	ONVOY, LLCV - MI	543C	WILLIAMSBG	MI
2012-12-11	231-525-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	WOLVERINE	MI
2012-12-11	231-613-3XXX	3000–3999	Assigned	ONVOY, LLCV - MI	543C	SCOTTVILLE	MI
2012-12-07	231-307-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	MORLEY	MI
2012-12-07	231-432-7XXX	7000–7999	Assigned	ONVOY, LLCV - MI	543C	NORTHPORT	MI
2012-12-07	231-465-3XXX	3000–3999	Assigned	ONVOY, LLCV - MI	543C	REED CITY	MI
2012-12-07	231-487-6XXX	6000–6999	Assigned	ONVOY, LLCV - MI	543C	PETOSKEY	MI
2012-12-07	231-788-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MUSKEGON	MI
2012-12-06	231-299-8XXX	8000–8999	Assigned	ONVOY, LLCV - MI	543C	MANISTEE	MI
2012-12-05	231-427-0XXX	0000–0999	Assigned	ONVOY, LLCV - MI	543C	MACKINAWCY	MI
2012-12-05	231-916-5XXX	5000–5999	Assigned	ONVOY, LLCV - MI	543C	MANCELONA	MI
2012-12-05	231-994-8XXX	8000–8999	Assigned	ONVOY, LLCV - MI	543C	LKLEELANAU	MI
2012-12-03	231-389-6XXX	6000–6999	Assigned	ONVOY, LLCV - MI	543C	HARRIETTA	MI
2012-12-03	231-399-3XXX	3000–3999	Assigned	ONVOY, LLCV - MI	543C	FRANKFORT	MI
2012-12-03	231-412-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	HARBOR SPG	MI
2012-12-03	231-518-6XXX	6000–6999	Assigned	ONVOY, LLCV - MI	543C	KALKASKA	MI
2012-12-03	231-674-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	GRANT	MI
2012-12-03	231-774-3XXX	3000–3999	Assigned	ONVOY, LLCV - MI	543C	INTERLOCHN	MI
2012-12-03	231-790-3XXX	3000–3999	Assigned	ONVOY, LLCV - MI	543C	FREESOIL	MI
2012-11-30	231-222-7XXX	7000–7999	Assigned	ONVOY, LLCV - MI	543C	EASTJORDAN	MI
2012-11-30	231-354-9XXX	9000–9999	Assigned	ONVOY, LLCV - MI	543C	CORAL	MI
2012-11-30	231-383-7XXX	7000–7999	Assigned	ONVOY, LLCV - MI	543C	BEULAH	MI
2012-11-30	231-498-9XXX	9000–9999	Assigned	ONVOY, LLCV - MI	543C	ELK RAPIDS	MI
2012-11-30	231-597-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	CHEBOYGAN	MI
2012-11-30	231-876-8XXX	8000–8999	Assigned	ONVOY, LLCV - MI	543C	CADILLAC	MI
2012-11-19	231-487-2XXX	2000–2999	Assigned	BANDWIDTH.COM CLEC, LLC - MI	991E	PETOSKEY	MI
2012-11-19	231-515-2XXX	2000–2999	Assigned	BANDWIDTH.COM CLEC, LLC - MI	991E	EVART	MI
2012-11-12	231-299-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MANISTEE	MI
2012-11-08	231-497-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7157	BOYNE CITY	MI
2012-11-08	231-498-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7157	ELK RAPIDS	MI
2012-11-07	231-299-3XXX	3000–3999	Assigned	AT&T ENTERPRISES, LLC	516C	MANISTEE	MI
2012-11-07	231-497-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	BOYNE CITY	MI
2012-11-07	231-680-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	REED CITY	MI
2012-11-07	231-758-1XXX	1000–1999	Assigned	AT&T ENTERPRISES, LLC	516C	PETOSKEY	MI
2012-11-06	231-292-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7157	WHITEHALL	MI
2012-11-06	231-594-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7157	HART	MI
2012-11-06	231-681-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7157	FRUITPORT	MI
2012-11-06	231-853-1XXX	1000–1999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7157	RAVENNA	MI
2012-11-05	231-683-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MUSKEGON	MI
2012-10-22	231-570-4XXX	4000–4999	Assigned	BANDWIDTH.COM CLEC, LLC - MI	991E	FIFE LAKE	MI
2012-10-22	231-667-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - MI	991E	MARION	MI
2012-09-25	231-203-2XXX	2000–2999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	ALANSON	MI
2012-09-25	231-262-1XXX	1000–1999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	ELMIRA	MI
2012-09-25	231-433-1XXX	1000–1999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	MOORESTOWN	MI
2012-09-25	231-640-2XXX	2000–2999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	LAKE ANN	MI
2012-09-25	231-835-2XXX	2000–2999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	GLEN LAKE	MI
2012-09-25	231-867-1XXX	1000–1999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	CHIPPEWALK	MI
2012-09-25	231-970-2XXX	2000–2999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	BEAR LAKE	MI
2012-09-12	231-721-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	HART	MI
2012-09-05	231-638-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MUSKEGON	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.