Recent thousands-block assignments

24 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 530

ONVOY, LLC - CA 9

BANDWIDTH.COM CLEC, LLC - CA 6

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 4

OPENTACT INC. 3

T-MOBILE USA, INC. 2

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
2021-03-18	530-499-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	PLVL WEST	CA
2021-03-17	530-687-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	NEVADACITY	CA
2021-03-17	530-702-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	WOODLAND	CA
2021-03-16	530-420-4XXX	4000–4999	Assigned	TWILIO INTERNATIONAL, INC.	506J	ROBBINS	CA
2021-03-16	530-451-8XXX	8000–8999	Assigned	TWILIO INTERNATIONAL, INC.	506J	SMARTSVL	CA
2021-03-15	530-953-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	REDDING	CA
2021-03-15	530-953-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	REDDING	CA
2021-03-10	530-944-4XXX	4000–4999	Assigned	FRACTEL, LLC	965H	WILLOW CRK	CA
2021-03-05	530-789-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	MARYSVILLE	CA
2021-03-05	530-831-8XXX	8000–8999	Assigned	ONVOY, LLC - CA	649C	PORTOLA	CA
2021-03-05	530-994-8XXX	8000–8999	Assigned	ONVOY, LLC - CA	649C	SIERRAVL	CA
2021-03-02	530-804-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	WILLOWS	CA
2021-02-28	530-614-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	SHINGLESPG	CA
2021-02-26	530-821-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	MARYSVILLE	CA
2021-02-23	530-203-7XXX	7000–7999	Assigned	TELNYX LLC	073H	ELK CREEK	CA
2021-02-22	530-608-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	TRUCKEE	CA
2021-02-18	530-232-7XXX	7000–7999	Assigned	METROPCS, INC.	5562	REDDING	CA
2021-02-17	530-789-9XXX	9000–9999	Assigned	FRACTEL, LLC	965H	MARYSVILLE	CA
2021-02-12	530-549-8XXX	8000–8999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	MILLVILLE	CA
2021-02-05	530-606-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	TRUCKEE	CA
2021-02-05	530-659-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SOUTHTAHOE	CA
2021-02-04	530-404-3XXX	3000–3999	Assigned	ONVOY, LLC - CA	649C	LEWISTON	CA
2021-02-04	530-784-5XXX	5000–5999	Assigned	ONVOY, LLC - CA	649C	WEAVERVL	CA
2021-02-04	530-994-0XXX	0000–0999	Assigned	ONVOY, LLC - CA	649C	SIERRAVL	CA
2021-01-30	530-804-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	WILLOWS	CA
2021-01-28	530-236-2XXX	2000–2999	Assigned	TELNYX LLC	073H	CHALLENGE	CA
2021-01-28	530-853-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - CA	981E	MCCLOUD	CA
2021-01-26	530-796-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	GUINDA	CA
2021-01-25	530-382-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	AUBN MAIN	CA
2021-01-25	530-382-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	AUBN MAIN	CA
2021-01-25	530-382-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	AUBN MAIN	CA
2021-01-25	530-485-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	AUBN MAIN	CA
2021-01-25	530-485-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	AUBN MAIN	CA
2021-01-19	530-905-4XXX	4000–4999	Assigned	UNITED STATES CELLULAR - CA	6261	YREKA	CA
2021-01-14	530-328-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	AUBN MAIN	CA
2021-01-12	530-702-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7145	WOODLAND	CA
2021-01-07	530-840-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	RED BLUFF	CA
2020-12-21	530-670-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	CORNING	CA
2020-12-17	530-220-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	DAVIS	CA
2020-12-16	530-703-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	OROVILLE	CA
2020-12-15	530-473-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	WILLIAMS	CA
2020-12-15	530-561-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	ANDERSON	CA
2020-12-14	530-854-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	OROVILLE	CA
2020-12-11	530-292-9XXX	9000–9999	Assigned	TERRA NOVA TELECOM INC.	145J	NOSAN JUAN	CA
2020-12-11	530-333-8XXX	8000–8999	Assigned	TERRA NOVA TELECOM INC.	145J	GEORGETOWN	CA
2020-12-11	530-362-6XXX	6000–6999	Assigned	TERRA NOVA TELECOM INC.	145J	NEVADACITY	CA
2020-12-11	530-452-2XXX	2000–2999	Assigned	TERRA NOVA TELECOM INC.	145J	NTAH THCY	CA
2020-12-11	530-505-5XXX	5000–5999	Assigned	TERRA NOVA TELECOM INC.	145J	WINTERS	CA
2020-12-11	530-546-9XXX	9000–9999	Assigned	TERRA NOVA TELECOM INC.	145J	NTAH BCWY	CA
2020-12-11	530-577-9XXX	9000–9999	Assigned	TERRA NOVA TELECOM INC.	145J	SOUTHTAHOE	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.