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 408

BANDWIDTH.COM CLEC, LLC - CA 411

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 287

LEVEL 3 COMMUNICATIONS, LLC - CA 262

NEW CINGULAR WIRELESS PCS, LLC 243

T-MOBILE USA, INC. 230

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
2020-10-15	408-754-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	SNJS SOUTH	CA
2020-10-02	408-863-1XXX	1000–1999	Assigned	VONAGE AMERICA LLC	197D	SNJS WEST	CA
2020-09-18	408-366-5XXX	5000–5999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	SNJS WEST	CA
2020-09-18	408-387-7XXX	7000–7999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	SNJS WEST	CA
2020-09-18	408-549-3XXX	3000–3999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	SNJS WEST	CA
2020-09-18	408-567-1XXX	1000–1999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	SNJS WEST	CA
2020-09-18	408-625-8XXX	8000–8999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	SNJS WEST	CA
2020-09-18	408-792-9XXX	9000–9999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	SNJS WEST	CA
2020-09-09	408-876-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	SNJS NORTH	CA
2020-09-01	408-752-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	SUNNYVALE	CA
2020-08-25	408-549-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	SNJS WEST	CA
2020-08-25	408-549-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	SNJS WEST	CA
2020-08-25	408-549-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	SNJS WEST	CA
2020-08-10	408-547-6XXX	6000–6999	Assigned	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	SNJS WEST	CA
2020-07-31	408-550-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SNJS WEST	CA
2020-07-31	408-790-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SNJS WEST	CA
2020-06-22	408-662-2XXX	2000–2999	Assigned	ONVOY SPECTRUM, LLC	624H	SNJS NORTH	CA
2020-06-22	408-662-3XXX	3000–3999	Assigned	ONVOY SPECTRUM, LLC	624H	SNJS NORTH	CA
2020-06-22	408-662-4XXX	4000–4999	Assigned	ONVOY SPECTRUM, LLC	624H	SNJS NORTH	CA
2020-05-14	408-413-7XXX	7000–7999	Assigned	METROPCS, INC.	5562	GILROY	CA
2020-03-03	408-580-9XXX	9000–9999	Assigned	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	SNJS SOUTH	CA
2019-12-02	408-580-3XXX	3000–3999	Assigned	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	SNJS SOUTH	CA
2019-10-16	408-900-6XXX	6000–6999	Assigned	ONVOY, LLC - CA	649C	SUNNYVALE	CA
2019-09-27	408-900-2XXX	2000–2999	Assigned	ONVOY, LLC - CA	649C	SUNNYVALE	CA
2019-09-26	408-604-3XXX	3000–3999	Assigned	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	SUNNYVALE	CA
2019-09-26	408-604-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	SUNNYVALE	CA
2019-09-17	408-343-3XXX	3000–3999	Assigned	BANDWIDTH.COM CLEC, LLC - CA	981E	SNJS WEST	CA
2019-09-17	408-919-4XXX	4000–4999	Assigned	BANDWIDTH.COM CLEC, LLC - CA	981E	SNJS WEST	CA
2019-08-22	408-988-9XXX	9000–9999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7145	SNJS WEST	CA
2019-08-20	408-975-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	SNJS WEST	CA
2019-08-08	408-528-2XXX	2000–2999	Assigned	ONVOY, LLC - CA	649C	SNJS SOUTH	CA
2019-08-06	408-830-3XXX	3000–3999	Assigned	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	SUNNYVALE	CA
2019-07-31	408-366-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	SNJS WEST	CA
2019-01-24	408-583-5XXX	5000–5999	Assigned	ONVOY, LLC - CA	649C	CAMPBELL	CA
2019-01-24	408-583-6XXX	6000–6999	Assigned	ONVOY, LLC - CA	649C	CAMPBELL	CA
2018-12-24	408-763-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	MORGANHILL	CA
2018-11-29	408-414-6XXX	6000–6999	Assigned	ONVOY, LLC - CA	649C	SNJS SOUTH	CA
2018-11-29	408-622-2XXX	2000–2999	Assigned	ONVOY, LLC - CA	649C	SNJS SOUTH	CA
2018-11-15	408-703-3XXX	3000–3999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	SNJS WEST	CA
2018-11-15	408-790-5XXX	5000–5999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7145	SNJS WEST	CA
2018-11-07	408-719-7XXX	7000–7999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7145	SNJS NORTH	CA
2018-11-07	408-941-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SNJS NORTH	CA
2018-11-02	408-604-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	SUNNYVALE	CA
2018-10-29	408-673-4XXX	4000–4999	Assigned	BANDWIDTH.COM CLEC, LLC - CA	981E	SNJS WEST	CA
2018-10-09	408-746-1XXX	1000–1999	Assigned	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	SUNNYVALE	CA
2018-10-04	408-345-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SNJS WEST	CA
2018-10-04	408-345-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SNJS WEST	CA
2018-10-01	408-279-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SNJS WEST	CA
2018-10-01	408-343-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SNJS WEST	CA
2018-09-24	408-686-2XXX	2000–2999	Assigned	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	SAN MARTIN	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.