Recent thousands-block assignments

9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 909

ONVOY, LLC - CA 6

PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2

BANDWIDTH.COM CLEC, LLC - CA 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
2004-05-04	909-528-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	MENTONE	CA
2004-05-04	909-528-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	MENTONE	CA
2004-05-04	909-890-8XXX	8000–8999	Assigned	METROPCS NETWORKS, LLC	899D	S BERNDINO	CA
2004-04-28	909-581-6XXX	6000–6999	Assigned	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	UPLAND	CA
2004-04-28	909-581-7XXX	7000–7999	Assigned	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	UPLAND	CA
2004-04-27	909-331-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	ONTARIO	CA
2004-04-27	909-455-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	POMONA	CA
2004-04-27	909-455-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	POMONA	CA
2004-04-27	909-455-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	POMONA	CA
2004-04-27	909-773-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	ONTARIO	CA
2004-04-27	909-900-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FONTANA	CA
2004-04-27	909-900-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FONTANA	CA
2004-04-13	909-557-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	REDLANDS	CA
2004-04-13	909-557-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	REDLANDS	CA
2004-04-13	909-573-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	CHINO	CA
2004-04-13	909-573-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	CHINO	CA
2004-04-13	909-744-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	ARROWHEAD	CA
2004-04-13	909-915-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	S BERNDINO	CA
2004-04-13	909-915-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	S BERNDINO	CA
2004-04-13	909-921-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	UPLAND	CA
2004-04-13	909-921-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	UPLAND	CA
2004-04-01	909-753-2XXX	2000–2999	Assigned	METROPCS NETWORKS, LLC	899D	CLAREMONT	CA
2004-04-01	909-915-0XXX	0000–0999	Assigned	METROPCS NETWORKS, LLC	899D	S BERNDINO	CA
2004-03-31	909-434-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	FONTANA	CA
2004-03-30	909-771-5XXX	5000–5999	Assigned	METROPCS NETWORKS, LLC	899D	S BERNDINO	CA
2004-03-30	909-771-7XXX	7000–7999	Assigned	METROPCS NETWORKS, LLC	899D	S BERNDINO	CA
2004-03-30	909-913-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	S BERNDINO	CA
2004-03-24	909-646-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	ETIWANDA	CA
2004-03-23	909-434-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	FONTANA	CA
2004-03-23	909-568-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	CLAREMONT	CA
2004-03-23	909-631-8XXX	8000–8999	Assigned	METROPCS NETWORKS, LLC	899D	CHINO	CA
2004-03-23	909-890-7XXX	7000–7999	Assigned	METROPCS NETWORKS, LLC	899D	S BERNDINO	CA
2004-03-19	909-644-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	RIALTO	CA
2004-03-19	909-644-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	RIALTO	CA
2004-03-15	909-450-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	CLAREMONT	CA
2004-03-12	909-524-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	POMONA	CA
2004-03-12	909-524-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	POMONA	CA
2004-03-12	909-524-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	POMONA	CA
2004-03-12	909-806-9XXX	9000–9999	Assigned	METROPCS NETWORKS, LLC	899D	S BERNDINO	CA
2004-03-12	909-997-8XXX	8000–8999	Assigned	METROPCS NETWORKS, LLC	899D	FONTANA	CA
2004-03-05	909-979-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	DIAMONDBAR	CA
2004-03-05	909-997-7XXX	7000–7999	Assigned	METROPCS NETWORKS, LLC	899D	FONTANA	CA
2004-03-04	909-446-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	CALIMESA	CA
2004-03-04	909-568-2XXX	2000–2999	Assigned	PAETEC ITEL, LLC	829J	CLAREMONT	CA
2004-03-04	909-937-4XXX	4000–4999	Assigned	PAETEC ITEL, LLC	829J	ONTARIO	CA
2004-03-01	909-418-0XXX	0000–0999	Assigned	METROPCS NETWORKS, LLC	899D	ONTARIO	CA
2004-03-01	909-418-9XXX	9000–9999	Assigned	METROPCS NETWORKS, LLC	899D	ONTARIO	CA
2004-03-01	909-975-0XXX	0000–0999	Assigned	METROPCS NETWORKS, LLC	899D	ONTARIO	CA
2004-03-01	909-975-8XXX	8000–8999	Assigned	METROPCS NETWORKS, LLC	899D	ONTARIO	CA
2004-02-20	909-528-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	MENTONE	CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.