Recent thousands-block assignments

35 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 925

ONVOY, LLC - CA 24

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 5

BANDWIDTH.COM CLEC, LLC - CA 2

TELNYX LLC 1

T-MOBILE USA, INC. 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
2012-03-28	925-885-6XXX	6000–6999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	ORINDA	CA
2012-03-19	925-357-2XXX	2000–2999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WALNUT CRK	CA
2012-03-14	925-357-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	WALNUT CRK	CA
2012-03-14	925-961-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	LIVERMORE	CA
2012-03-07	925-421-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	CONCORD	CA
2012-03-07	925-605-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	LIVERMORE	CA
2012-02-15	925-350-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	ANTIOCH	CA
2012-02-15	925-732-3XXX	3000–3999	Assigned	AT&T ENTERPRISES, LLC	516C	ANTIOCH	CA
2012-02-14	925-961-8XXX	8000–8999	Assigned	ONVOY, LLC - CA	649C	LIVERMORE	CA
2012-02-13	925-293-5XXX	5000–5999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	MARTINEZ	CA
2012-02-13	925-350-7XXX	7000–7999	Assigned	ONVOY, LLC - CA	649C	ANTIOCH	CA
2012-02-10	925-931-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	PLEASANTON	CA
2012-01-30	925-421-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - CA	981E	CONCORD	CA
2012-01-30	925-421-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - CA	981E	CONCORD	CA
2012-01-25	925-344-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	LIVERMORE	CA
2012-01-23	925-338-9XXX	9000–9999	Assigned	BANDWIDTH.COM CLEC, LLC - CA	981E	CONCORD	CA
2012-01-18	925-568-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	SUNOL	CA
2012-01-04	925-350-5XXX	5000–5999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	ANTIOCH	CA
2011-12-30	925-298-6XXX	6000–6999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	LAFAYETTE	CA
2011-12-30	925-357-4XXX	4000–4999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	WALNUT CRK	CA
2011-12-30	925-364-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	DUBLN-SNRM	CA
2011-12-30	925-524-6XXX	6000–6999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	CLAYTON	CA
2011-12-28	925-338-5XXX	5000–5999	Assigned	METROPCS, INC.	5562	CONCORD	CA
2011-12-28	925-338-6XXX	6000–6999	Assigned	METROPCS, INC.	5562	CONCORD	CA
2011-12-23	925-567-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	CLAYTON	CA
2011-12-22	925-350-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	ANTIOCH	CA
2011-12-22	925-575-9XXX	9000–9999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	DANVILLE	CA
2011-12-05	925-357-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	WALNUT CRK	CA
2011-11-21	925-309-3XXX	3000–3999	Assigned	ONVOY, LLC - CA	649C	DANVILLE	CA
2011-11-11	925-291-8XXX	8000–8999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	PSBG WEST	CA
2011-11-04	925-962-5XXX	5000–5999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	LAFAYETTE	CA
2011-11-02	925-732-5XXX	5000–5999	Assigned	ONVOY, LLC - CA	649C	ANTIOCH	CA
2011-11-01	925-255-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	ORINDA	CA
2011-11-01	925-273-6XXX	6000–6999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	LIVERMORE	CA
2011-11-01	925-334-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	CONCORD	CA
2011-11-01	925-334-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	CONCORD	CA
2011-11-01	925-854-6XXX	6000–6999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	DANVILLE	CA
2011-10-27	925-334-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	CONCORD	CA
2011-10-27	925-999-7XXX	7000–7999	Assigned	ONVOY, LLC - CA	649C	DUBLN-SNRM	CA
2011-10-26	925-334-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	CONCORD	CA
2011-10-26	925-350-3XXX	3000–3999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	ANTIOCH	CA
2011-10-26	925-964-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	DANVILLE	CA
2011-10-05	925-334-5XXX	5000–5999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	CONCORD	CA
2011-10-05	925-418-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	ECONTRCOST	CA
2011-10-03	925-334-7XXX	7000–7999	Assigned	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	CONCORD	CA
2011-09-30	925-304-6XXX	6000–6999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	CLAYTON	CA
2011-09-30	925-954-3XXX	3000–3999	Assigned	ONVOY, LLC - CA	649C	WALNUT CRK	CA
2011-09-22	925-309-5XXX	5000–5999	Assigned	BANDWIDTH.COM CLEC, LLC - CA	981E	DANVILLE	CA
2011-09-16	925-344-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	LIVERMORE	CA
2011-09-13	925-350-0XXX	0000–0999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	ANTIOCH	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.