Recent thousands-block assignments

13 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 831

ONVOY, LLC - CA 10

EXIANT COMMUNICATIONS LLC 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
2021-10-28	831-665-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	HOLLISTER	CA
2021-10-22	831-587-1XXX	1000–1999	Assigned	ONVOY SPECTRUM, LLC	624H	WATSONVL	CA
2021-10-22	831-587-2XXX	2000–2999	Assigned	ONVOY SPECTRUM, LLC	624H	WATSONVL	CA
2021-10-19	831-453-8XXX	8000–8999	Assigned	ONVOY, LLC - CA	649C	CASTROVL	CA
2021-10-19	831-731-8XXX	8000–8999	Assigned	ONVOY, LLC - CA	649C	CASTROVL	CA
2021-10-19	831-774-8XXX	8000–8999	Assigned	ONVOY, LLC - CA	649C	GONZALES	CA
2021-10-19	831-774-9XXX	9000–9999	Assigned	ONVOY, LLC - CA	649C	GONZALES	CA
2021-10-19	831-946-1XXX	1000–1999	Assigned	ONVOY SPECTRUM, LLC	624H	SANTA CRUZ	CA
2021-10-19	831-946-2XXX	2000–2999	Assigned	ONVOY SPECTRUM, LLC	624H	SANTA CRUZ	CA
2021-10-19	831-946-4XXX	4000–4999	Assigned	ONVOY SPECTRUM, LLC	624H	SANTA CRUZ	CA
2021-10-19	831-946-5XXX	5000–5999	Assigned	ONVOY SPECTRUM, LLC	624H	SANTA CRUZ	CA
2021-10-19	831-946-6XXX	6000–6999	Assigned	ONVOY SPECTRUM, LLC	624H	SANTA CRUZ	CA
2021-10-14	831-401-6XXX	6000–6999	Assigned	ONVOY SPECTRUM, LLC	624H	BEN LOMOND	CA
2021-10-14	831-401-7XXX	7000–7999	Assigned	ONVOY SPECTRUM, LLC	624H	BEN LOMOND	CA
2021-10-14	831-432-5XXX	5000–5999	Assigned	ONVOY SPECTRUM, LLC	624H	BOULDERCRK	CA
2021-10-14	831-432-6XXX	6000–6999	Assigned	ONVOY SPECTRUM, LLC	624H	BOULDERCRK	CA
2021-10-04	831-800-9XXX	9000–9999	Assigned	SKYE TELECOM LLC DBA SKYETEL	622J	SALINAS	CA
2021-10-01	831-220-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	MONTEREY	CA
2021-09-17	831-282-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	MONTEREY	CA
2021-09-15	831-304-6XXX	6000–6999	Assigned	ONVOY, LLC - CA	649C	GREENFIELD	CA
2021-09-09	831-717-5XXX	5000–5999	Assigned	ONVOY, LLC - CA	649C	MONTEREY	CA
2021-09-09	831-717-6XXX	6000–6999	Assigned	ONVOY, LLC - CA	649C	MONTEREY	CA
2021-09-07	831-417-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SALINAS	CA
2021-09-07	831-628-0XXX	0000–0999	Assigned	TERRA NOVA TELECOM INC.	145J	TRES PINOS	CA
2021-09-07	831-774-6XXX	6000–6999	Assigned	TERRA NOVA TELECOM INC.	145J	GONZALES	CA
2021-09-07	831-783-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SALINAS	CA
2021-09-01	831-587-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	WATSONVL	CA
2021-08-27	831-677-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	SOLEDAD	CA
2021-08-26	831-699-8XXX	8000–8999	Assigned	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	FELTON	CA
2021-08-23	831-587-8XXX	8000–8999	Assigned	FRACTEL, LLC	965H	WATSONVL	CA
2021-07-13	831-946-3XXX	3000–3999	Assigned	FRACTEL, LLC	965H	SANTA CRUZ	CA
2021-07-02	831-266-4XXX	4000–4999	Assigned	ONVOY, LLC - CA	649C	SANTA CRUZ	CA
2021-07-02	831-301-3XXX	3000–3999	Assigned	ONVOY, LLC - CA	649C	SAN JUAN	CA
2021-07-02	831-350-5XXX	5000–5999	Assigned	ONVOY, LLC - CA	649C	TRES PINOS	CA
2021-07-02	831-382-9XXX	9000–9999	Assigned	ONVOY, LLC - CA	649C	SAN LUCAS	CA
2021-07-02	831-539-4XXX	4000–4999	Assigned	ONVOY, LLC - CA	649C	WATSONVL	CA
2021-07-02	831-666-4XXX	4000–4999	Assigned	ONVOY, LLC - CA	649C	WATSONVL	CA
2021-07-02	831-677-5XXX	5000–5999	Assigned	ONVOY, LLC - CA	649C	SOLEDAD	CA
2021-07-01	831-249-1XXX	1000–1999	Assigned	ONVOY, LLC - CA	649C	BIG SUR	CA
2021-07-01	831-271-1XXX	1000–1999	Assigned	ONVOY, LLC - CA	649C	HOLLISTER	CA
2021-07-01	831-304-7XXX	7000–7999	Assigned	ONVOY, LLC - CA	649C	GREENFIELD	CA
2021-07-01	831-304-8XXX	8000–8999	Assigned	ONVOY, LLC - CA	649C	GREENFIELD	CA
2021-07-01	831-306-8XXX	8000–8999	Assigned	ONVOY, LLC - CA	649C	CHUALAR	CA
2021-07-01	831-308-6XXX	6000–6999	Assigned	ONVOY, LLC - CA	649C	CARMEL VLY	CA
2021-07-01	831-308-7XXX	7000–7999	Assigned	ONVOY, LLC - CA	649C	CARMEL VLY	CA
2021-07-01	831-417-2XXX	2000–2999	Assigned	ONVOY, LLC - CA	649C	SALINAS	CA
2021-07-01	831-417-5XXX	5000–5999	Assigned	ONVOY, LLC - CA	649C	SALINAS	CA
2021-07-01	831-432-0XXX	0000–0999	Assigned	ONVOY, LLC - CA	649C	BOULDERCRK	CA
2021-07-01	831-432-1XXX	1000–1999	Assigned	ONVOY, LLC - CA	649C	BOULDERCRK	CA
2021-07-01	831-453-5XXX	5000–5999	Assigned	ONVOY, LLC - CA	649C	CASTROVL	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.