Recent thousands-block assignments

2 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 586

NEW CINGULAR WIRELESS PCS, LLC - IL 1

INTRADO COMMUNICATIONS, 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
2005-03-18	586-486-6XXX	6000–6999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	CENTERLINE	MI
2005-03-18	586-486-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	CENTERLINE	MI
2005-03-18	586-838-0XXX	0000–0999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	WARREN	MI
2005-03-14	586-207-6XXX	6000–6999	Assigned	PAETEC ITEL, LLC	829J	WASHINGTON	MI
2005-03-14	586-393-6XXX	6000–6999	Assigned	PAETEC ITEL, LLC	829J	CENTERLINE	MI
2005-02-25	586-738-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	MT CLEMENS	MI
2005-02-21	586-697-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	WASHINGTON	MI
2005-02-21	586-697-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	WASHINGTON	MI
2005-02-17	586-630-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	MT CLEMENS	MI
2005-02-17	586-630-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	MT CLEMENS	MI
2005-02-17	586-649-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	MT CLEMENS	MI
2005-02-15	586-207-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	WASHINGTON	MI
2005-02-15	586-270-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	NEW HAVEN	MI
2005-02-15	586-273-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	NEWBALTIMR	MI
2005-02-15	586-281-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	ROMEO	MI
2005-02-15	586-430-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	RICHMOND	MI
2005-02-15	586-486-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	CENTERLINE	MI
2005-01-20	586-270-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	NEW HAVEN	MI
2005-01-20	586-273-6XXX	6000–6999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	NEWBALTIMR	MI
2005-01-20	586-540-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	ROMEO	MI
2005-01-20	586-697-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	WASHINGTON	MI
2005-01-18	586-863-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	ROSEVILLE	MI
2005-01-13	586-258-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	WARREN	MI
2005-01-11	586-722-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	WARREN	MI
2005-01-11	586-838-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	WARREN	MI
2005-01-05	586-477-3XXX	3000–3999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	MT CLEMENS	MI
2005-01-05	586-838-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	WARREN	MI
2005-01-03	586-746-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MT CLEMENS	MI
2005-01-03	586-746-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MT CLEMENS	MI
2004-12-28	586-372-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	ROMEO	MI
2004-12-17	586-258-3XXX	3000–3999	Assigned	PAETEC ITEL, LLC	829J	WARREN	MI
2004-12-17	586-262-3XXX	3000–3999	Assigned	PAETEC ITEL, LLC	829J	UTICA	MI
2004-12-17	586-477-2XXX	2000–2999	Assigned	PAETEC ITEL, LLC	829J	MT CLEMENS	MI
2004-12-10	586-782-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	CENTERLINE	MI
2004-12-10	586-782-5XXX	5000–5999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	CENTERLINE	MI
2004-12-10	586-782-6XXX	6000–6999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	CENTERLINE	MI
2004-12-10	586-782-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	CENTERLINE	MI
2004-12-09	586-477-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	MT CLEMENS	MI
2004-12-06	586-258-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	WARREN	MI
2004-11-15	586-477-7XXX	7000–7999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	MT CLEMENS	MI
2004-11-10	586-218-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	ROSEVILLE	MI
2004-11-10	586-580-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	UTICA	MI
2004-11-10	586-630-5XXX	5000–5999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	MT CLEMENS	MI
2004-11-10	586-782-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	CENTERLINE	MI
2004-11-08	586-630-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	MT CLEMENS	MI
2004-11-08	586-630-9XXX	9000–9999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	MT CLEMENS	MI
2004-09-14	586-863-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	ROSEVILLE	MI
2004-09-13	586-365-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	WARREN	MI
2004-09-13	586-365-9XXX	9000–9999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	WARREN	MI
2004-08-26	586-864-4XXX	4000–4999	Assigned	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	WARREN	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.