Recent thousands-block assignments

12 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 608

ONVOY, LLC - WI 6

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 4

NEW CINGULAR WIRELESS PCS, LLC - IL 1

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
2013-07-09	608-421-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	MADISON	WI
2013-07-09	608-421-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	MADISON	WI
2013-07-01	608-370-9XXX	9000–9999	Assigned	UNITED STATES CELLULAR - WI	6274	SAUK CITY	WI
2013-06-19	608-709-1XXX	1000–1999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	MADISON	WI
2013-06-12	608-723-8XXX	8000–8999	Assigned	UNITED STATES CELLULAR - WI	6274	LANCASTER	WI
2013-05-24	608-535-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - WI	007F	MADISON	WI
2013-05-24	608-535-4XXX	4000–4999	Assigned	BANDWIDTH.COM CLEC, LLC - WI	007F	MADISON	WI
2013-05-24	608-535-5XXX	5000–5999	Assigned	BANDWIDTH.COM CLEC, LLC - WI	007F	MADISON	WI
2013-05-24	608-535-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - WI	007F	MADISON	WI
2013-05-24	608-713-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - WI	007F	BELOIT	WI
2013-05-24	608-728-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - WI	007F	JANESVILLE	WI
2013-05-24	608-728-8XXX	8000–8999	Assigned	BANDWIDTH.COM CLEC, LLC - WI	007F	JANESVILLE	WI
2013-05-22	608-490-4XXX	4000–4999	Assigned	UNITED STATES CELLULAR - WI	6274	EVANSVILLE	WI
2013-05-07	608-841-1XXX	1000–1999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	MIDDLETON	WI
2013-05-02	608-560-1XXX	1000–1999	Assigned	CENTRAL STATE TEL. CO	0859	NECEDAH	WI
2013-04-30	608-567-2XXX	2000–2999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	TOMAH	WI
2013-04-19	608-433-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	LA CROSSE	WI
2013-04-10	608-381-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	MADISON	WI
2013-04-03	608-283-9XXX	9000–9999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	MADISON	WI
2013-04-03	608-296-7XXX	7000–7999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	WESTFIELD	WI
2013-04-01	608-852-1XXX	1000–1999	Assigned	UNITED STATES CELLULAR - WI	6274	MADISON	WI
2013-03-14	608-318-5XXX	5000–5999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	SUNPRAIRIE	WI
2013-03-11	608-421-1XXX	1000–1999	Assigned	NUSO, LLC	551G	MADISON	WI
2013-02-27	608-844-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WISCONDLLS	WI
2013-02-26	608-518-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	LA CROSSE	WI
2013-02-26	608-518-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	LA CROSSE	WI
2013-02-11	608-572-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	MADISON	WI
2013-02-11	608-572-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	MADISON	WI
2013-02-07	608-481-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	BELOIT	WI
2013-01-31	608-863-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	ARCADIA	WI
2013-01-28	608-709-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	MADISON	WI
2013-01-10	608-644-5XXX	5000–5999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	SAUK CITY	WI
2013-01-09	608-713-6XXX	6000–6999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	BELOIT	WI
2013-01-04	608-501-7XXX	7000–7999	Assigned	UNITED STATES CELLULAR - WI	6274	STOUGHTON	WI
2012-12-20	608-472-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	ADAMS	WI
2012-12-20	608-487-8XXX	8000–8999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	SPARTA	WI
2012-12-12	608-403-9XXX	9000–9999	Assigned	UNITED STATES CELLULAR - WI	6274	ADAMS	WI
2012-12-11	608-618-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - WI	007F	EDGERTON	WI
2012-12-11	608-618-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - WI	007F	EDGERTON	WI
2012-12-06	608-842-2XXX	2000–2999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	DE FOREST	WI
2012-12-05	608-291-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - WI	007F	OREGON	WI
2012-11-13	608-351-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WEST SALEM	WI
2012-10-30	608-886-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	MADISON	WI
2012-10-29	608-352-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - WI	007F	JANESVILLE	WI
2012-10-17	608-709-3XXX	3000–3999	Assigned	LEVEL 3 TELECOM OF WISCONSIN, LP - WI	7322	MADISON	WI
2012-10-01	608-683-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	PORTAGE	WI
2012-09-26	608-403-2XXX	2000–2999	Assigned	UNITED STATES CELLULAR - WI	6274	ADAMS	WI
2012-09-26	608-622-8XXX	8000–8999	Assigned	UNITED STATES CELLULAR - WI	6274	MADISON	WI
2012-09-26	608-739-1XXX	1000–1999	Assigned	UNITED STATES CELLULAR - WI	6274	MUSCODA	WI
2012-09-21	608-433-4XXX	4000–4999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LA CROSSE	WI

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.