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
2017-06-08	501-585-7XXX	7000–7999	Assigned	ONVOY, LLC - AR	348F	CONWAY	AR
2017-06-08	501-915-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR	6805	JESSIEVL	AR
2017-05-18	501-916-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	LITTLEROCK	AR
2017-05-12	501-585-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	CONWAY	AR
2017-05-12	501-585-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	CONWAY	AR
2017-05-11	501-302-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	HEBER SPG	AR
2017-05-11	501-523-8XXX	8000–8999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	SCOTT	AR
2017-05-05	501-222-3XXX	3000–3999	Assigned	ONVOY, LLC - AR	348F	WRIGHTSVL	AR
2017-05-05	501-222-4XXX	4000–4999	Assigned	ONVOY, LLC - AR	348F	WRIGHTSVL	AR
2017-05-05	501-443-2XXX	2000–2999	Assigned	ONVOY, LLC - AR	348F	BENTON	AR
2017-05-05	501-443-3XXX	3000–3999	Assigned	ONVOY, LLC - AR	348F	BENTON	AR
2017-05-05	501-550-1XXX	1000–1999	Assigned	ONVOY, LLC - AR	348F	GREERSFRRY	AR
2017-05-05	501-550-3XXX	3000–3999	Assigned	ONVOY, LLC - AR	348F	GREERSFRRY	AR
2017-04-26	501-904-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR	7277	LITTLEROCK	AR
2017-04-14	501-306-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - AR	802C	QUITMAN	AR
2017-04-14	501-319-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - AR	802C	LITTLEROCK	AR
2017-04-14	501-435-2XXX	2000–2999	Assigned	AT&T - LOCAL	7421	LITTLEROCK	AR
2017-04-12	501-203-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR	6805	SEARCY	AR
2017-04-06	501-293-3XXX	3000–3999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - AR	802C	HOTSPRINGS	AR
2017-03-16	501-858-0XXX	0000–0999	Assigned	E. RITTER COMMUNICATIONS, LLC	128L	BEEBE	AR
2017-03-15	501-557-0XXX	0000–0999	Assigned	ONVOY, LLC - AR	348F	BAUXITE	AR
2017-03-15	501-566-5XXX	5000–5999	Assigned	ONVOY, LLC - AR	348F	JONESMILLS	AR
2017-03-15	501-585-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	CONWAY	AR
2017-03-15	501-594-4XXX	4000–4999	Assigned	ONVOY, LLC - AR	348F	PARON	AR
2017-03-15	501-669-3XXX	3000–3999	Assigned	ONVOY, LLC - AR	348F	CLEVELAND	AR
2017-03-15	501-915-1XXX	1000–1999	Assigned	ONVOY, LLC - AR	348F	JESSIEVL	AR
2017-03-15	501-939-6XXX	6000–6999	Assigned	ONVOY, LLC - AR	348F	LONSDALE	AR
2017-03-15	501-991-5XXX	5000–5999	Assigned	ONVOY, LLC - AR	348F	CRYSTALSPG	AR
2017-03-08	501-293-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	HOTSPRINGS	AR
2017-03-08	501-293-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	HOTSPRINGS	AR
2017-03-08	501-293-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	HOTSPRINGS	AR
2017-03-08	501-293-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	HOTSPRINGS	AR
2017-03-08	501-293-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	HOTSPRINGS	AR
2017-03-08	501-293-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	HOTSPRINGS	AR
2017-03-01	501-943-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BRYANTCGVL	AR
2017-03-01	501-943-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BRYANTCGVL	AR
2017-02-28	501-226-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	JESSIEVL	AR
2017-01-17	501-261-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR	7277	SPRINGLAKE	AR
2016-12-15	501-297-5XXX	5000–5999	Assigned	METROPCS, INC.	5562	LITTLEROCK	AR
2016-12-15	501-435-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	LITTLEROCK	AR
2016-12-15	501-435-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	LITTLEROCK	AR
2016-12-15	501-568-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	LITTLEROCK	AR
2016-12-09	501-596-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	JACKSONVL	AR
2016-11-29	501-435-3XXX	3000–3999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - AR	802C	LITTLEROCK	AR
2016-11-04	501-808-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - AR	802C	VILONIA	AR
2016-10-04	501-314-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GREENBRIER	AR
2016-10-04	501-757-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR	6805	CLINTON	AR
2016-09-13	501-478-2XXX	2000–2999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR	7277	LITTLEROCK	AR
2016-09-08	501-625-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR	6805	HOTSPRINGS	AR
2016-08-25	501-238-9XXX	9000–9999	Assigned	BANDWIDTH.COM CLEC, LLC - AR	196F	GREERSFRRY	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.