Recent thousands-block assignments

1 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 415

BOOST SUBSCRIBERCO L.L.C. 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
2004-03-23	415-286-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-286-4XXX	4000–4999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-286-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-368-1XXX	1000–1999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-368-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-368-3XXX	3000–3999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-368-4XXX	4000–4999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-368-5XXX	5000–5999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-368-6XXX	6000–6999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-368-7XXX	7000–7999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-368-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-368-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-375-1XXX	1000–1999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-23	415-375-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	SNFC MT-EV	CA
2004-03-17	415-318-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	SNFC CNTRL	CA
2004-03-17	415-359-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	SNFC CNTRL	CA
2004-03-15	415-483-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	IGNACIO	CA
2004-03-15	415-868-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	STNSN-BLNS	CA
2004-03-12	415-318-7XXX	7000–7999	Assigned	ONVOY, LLC - CA	649C	SNFC CNTRL	CA
2004-03-12	415-683-2XXX	2000–2999	Assigned	ONVOY, LLC - CA	649C	SNFC MT-EV	CA
2004-03-02	415-287-1XXX	1000–1999	Assigned	ONVOY, LLC - CA	649C	SNFC JUNPR	CA
2004-02-11	415-686-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SAN RAFAEL	CA
2004-02-04	415-568-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	SNFC CNTRL	CA
2004-02-04	415-568-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	SNFC CNTRL	CA
2004-01-22	415-570-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	SNFC JUNPR	CA
2004-01-12	415-216-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	SNFC CNTRL	CA
2004-01-12	415-216-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	SNFC CNTRL	CA
2004-01-12	415-216-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	SNFC CNTRL	CA
2004-01-12	415-275-7XXX	7000–7999	Assigned	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	SAUSALITO	CA
2004-01-12	415-702-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	SNFC MT-EV	CA
2003-12-23	415-691-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	BELVEDERE	CA
2003-12-23	415-787-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	POINTREYES	CA
2003-12-17	415-233-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	SAN RAFAEL	CA
2003-12-17	415-233-3XXX	3000–3999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	SAN RAFAEL	CA
2003-12-10	415-335-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	SNFC JUNPR	CA
2003-12-10	415-335-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	SNFC JUNPR	CA
2003-11-25	415-874-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	SNFC CNTRL	CA
2003-10-20	415-299-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	SAN RAFAEL	CA
2003-10-16	415-342-4XXX	4000–4999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	SAN RAFAEL	CA
2003-10-16	415-342-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	SAN RAFAEL	CA
2003-09-29	415-233-0XXX	0000–0999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	SAN RAFAEL	CA
2003-09-29	415-233-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	SAN RAFAEL	CA
2003-09-26	415-233-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	SAN RAFAEL	CA
2003-09-19	415-413-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	CORTEMADRA	CA
2003-09-19	415-413-2XXX	2000–2999	Assigned	IP HORIZON LLC	515J	CORTEMADRA	CA
2003-09-19	415-494-4XXX	4000–4999	Assigned	IP HORIZON LLC	515J	SNFC JUNPR	CA
2003-09-19	415-690-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	BELVEDERE	CA
2003-09-19	415-690-2XXX	2000–2999	Assigned	IP HORIZON LLC	515J	BELVEDERE	CA
2003-09-11	415-200-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	SNFC CNTRL	CA
2003-09-11	415-200-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	SNFC CNTRL	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.