Recent thousands-block assignments

0 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, all time — NPA 916

T-MOBILE USA, INC. 446

ONVOY, LLC - CA 397

NEW CINGULAR WIRELESS PCS, LLC 374

METROPCS, INC. 362

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 331

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
2004-06-08	916-670-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	ELK GROVE	CA
2004-06-08	916-670-3XXX	3000–3999	Assigned	METROPCS, INC.	5562	ELK GROVE	CA
2004-06-08	916-670-4XXX	4000–4999	Assigned	METROPCS, INC.	5562	ELK GROVE	CA
2004-06-08	916-670-5XXX	5000–5999	Assigned	METROPCS, INC.	5562	ELK GROVE	CA
2004-06-08	916-670-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	ELK GROVE	CA
2004-06-08	916-670-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	ELK GROVE	CA
2004-06-08	916-868-1XXX	1000–1999	Assigned	METROPCS, INC.	5562	SCRM MAIN	CA
2004-06-08	916-868-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	SCRM MAIN	CA
2004-06-08	916-868-3XXX	3000–3999	Assigned	METROPCS, INC.	5562	SCRM MAIN	CA
2004-06-08	916-868-4XXX	4000–4999	Assigned	METROPCS, INC.	5562	SCRM MAIN	CA
2004-06-08	916-868-5XXX	5000–5999	Assigned	METROPCS, INC.	5562	SCRM MAIN	CA
2004-06-07	916-529-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2004-06-07	916-529-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2004-05-19	916-303-0XXX	0000–0999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	SO PLACER	CA
2004-05-11	916-671-7XXX	7000–7999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	FAIR OAKS	CA
2004-05-11	916-671-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	FAIR OAKS	CA
2004-04-22	916-266-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2004-04-15	916-529-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2004-04-09	916-436-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FAIR OAKS	CA
2004-04-01	916-529-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2004-04-01	916-529-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2004-03-30	916-792-3XXX	3000–3999	Assigned	METROPCS, INC.	5562	RSVL MAIN	CA
2004-03-25	916-346-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2004-03-19	916-529-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2004-03-16	916-248-7XXX	7000–7999	Assigned	ONVOY, LLC - CA	649C	SCRM MAIN	CA
2004-02-20	916-251-4XXX	4000–4999	Assigned	ONVOY, LLC - CA	649C	SO PLACER	CA
2004-02-18	916-529-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2004-02-17	916-792-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	RSVL MAIN	CA
2004-02-12	916-792-1XXX	1000–1999	Assigned	METROPCS, INC.	5562	RSVL MAIN	CA
2004-02-11	916-580-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	RSVL MAIN	CA
2004-02-11	916-580-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	RSVL MAIN	CA
2004-02-05	916-226-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	ELK GROVE	CA
2004-02-05	916-302-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	PLEASATGRV	CA
2004-02-05	916-378-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	MEADOWVIEW	CA
2004-02-04	916-644-3XXX	3000–3999	Assigned	FIDIUM ENTERPRISE SERVICES, LLC	3964	LINCOLN	CA
2004-02-04	916-670-7XXX	7000–7999	Assigned	FIDIUM ENTERPRISE SERVICES, LLC	3964	ELK GROVE	CA
2004-02-04	916-912-0XXX	0000–0999	Assigned	METROPCS, INC.	5562	SCRM MAIN	CA
2004-02-04	916-912-1XXX	1000–1999	Assigned	METROPCS, INC.	5562	SCRM MAIN	CA
2004-02-04	916-912-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	SCRM MAIN	CA
2004-02-04	916-912-3XXX	3000–3999	Assigned	METROPCS, INC.	5562	SCRM MAIN	CA
2004-01-29	916-529-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2004-01-16	916-218-6XXX	6000–6999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	RSVL MAIN	CA
2004-01-16	916-218-7XXX	7000–7999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	RSVL MAIN	CA
2004-01-16	916-271-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	ELK GROVE	CA
2004-01-16	916-271-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	ELK GROVE	CA
2004-01-08	916-792-4XXX	4000–4999	Assigned	METROPCS, INC.	5562	RSVL MAIN	CA
2004-01-07	916-671-4XXX	4000–4999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	FAIR OAKS	CA
2003-12-30	916-346-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2003-12-30	916-346-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2003-12-30	916-346-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	SCRM MAIN	CA

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.