Recent thousands-block assignments

25 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 501

ONVOY, LLC - AR 15

BANDWIDTH.COM CLEC, LLC - AR 5

CSC WIRELESS, LLC 2

NEW CINGULAR WIRELESS PCS, LLC - IL 1

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 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
2018-09-13	501-550-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	GREERSFRRY	AR
2018-09-11	501-443-5XXX	5000–5999	Assigned	ONVOY, LLC - AR	348F	BENTON	AR
2018-09-11	501-575-9XXX	9000–9999	Assigned	ONVOY, LLC - AR	348F	BENTON	AR
2018-08-29	501-263-1XXX	1000–1999	Assigned	AIRUS, INC. - AR	578H	LITTLEROCK	AR
2018-08-24	501-290-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	SEARCY	AR
2018-08-21	501-236-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	SEARCY	AR
2018-08-21	501-236-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	SEARCY	AR
2018-08-21	501-333-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	MAUMELLE	AR
2018-08-21	501-333-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	MAUMELLE	AR
2018-08-14	501-509-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	COY	AR
2018-08-06	501-443-0XXX	0000–0999	Assigned	ONVOY, LLC - AR	348F	BENTON	AR
2018-08-06	501-443-1XXX	1000–1999	Assigned	ONVOY, LLC - AR	348F	BENTON	AR
2018-08-02	501-808-5XXX	5000–5999	Assigned	TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR	048G	VILONIA	AR
2018-07-31	501-331-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	PERRYVILLE	AR
2018-07-26	501-260-1XXX	1000–1999	Assigned	AIRUS, INC. - AR	578H	LITTLEROCK	AR
2018-07-25	501-858-2XXX	2000–2999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	BEEBE	AR
2018-07-24	501-274-1XXX	1000–1999	Assigned	TELNYX LLC	073H	LITTLEROCK	AR
2018-07-24	501-391-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	PERRYVILLE	AR
2018-07-02	501-434-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	MCRAE	AR
2018-06-28	501-386-5XXX	5000–5999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	CENTER RDG	AR
2018-06-22	501-263-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - AR	802C	LITTLEROCK	AR
2018-06-21	501-200-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	REDFIELD	AR
2018-06-15	501-467-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR	6805	MALVERN	AR
2018-06-13	501-214-8XXX	8000–8999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	LITTLEROCK	AR
2018-06-13	501-214-9XXX	9000–9999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	LITTLEROCK	AR
2018-06-07	501-261-2XXX	2000–2999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	SPRINGLAKE	AR
2018-06-01	501-424-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	CABOT	AR
2018-05-11	501-798-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	PINNACLE	AR
2018-05-09	501-386-4XXX	4000–4999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	CENTER RDG	AR
2018-05-09	501-669-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	CLEVELAND	AR
2018-05-09	501-737-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	SCOTT	AR
2018-05-02	501-229-6XXX	6000–6999	Assigned	ONVOY, LLC - AR	348F	MALVERN	AR
2018-05-02	501-236-4XXX	4000–4999	Assigned	ONVOY, LLC - AR	348F	SEARCY	AR
2018-05-02	501-263-2XXX	2000–2999	Assigned	ONVOY, LLC - AR	348F	LITTLEROCK	AR
2018-05-02	501-273-2XXX	2000–2999	Assigned	ONVOY, LLC - AR	348F	CONWAY	AR
2018-05-02	501-289-5XXX	5000–5999	Assigned	ONVOY, LLC - AR	348F	MORRILTON	AR
2018-05-02	501-302-5XXX	5000–5999	Assigned	ONVOY, LLC - AR	348F	HEBER SPG	AR
2018-05-02	501-760-0XXX	0000–0999	Assigned	ONVOY, LLC - AR	348F	HOTSPRINGS	AR
2018-04-06	501-293-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR	6805	HOTSPRINGS	AR
2018-04-06	501-596-3XXX	3000–3999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	JACKSONVL	AR
2018-04-06	501-992-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SYVNHLSHWD	AR
2018-04-04	501-443-7XXX	7000–7999	Assigned	ONVOY, LLC - AR	348F	BENTON	AR
2018-04-04	501-443-8XXX	8000–8999	Assigned	ONVOY, LLC - AR	348F	BENTON	AR
2018-04-03	501-261-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	SPRINGLAKE	AR
2018-03-22	501-273-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	CONWAY	AR
2018-03-22	501-273-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	CONWAY	AR
2018-03-19	501-424-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	CABOT	AR
2018-03-19	501-887-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	HEBER SPG	AR
2018-03-15	501-328-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	CONWAY	AR
2018-03-15	501-548-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	CONWAY	AR

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.