Recent thousands-block assignments

22 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 559

NEW CINGULAR WIRELESS PCS, LLC 4

HD CARRIER LLC 4

EXIANT COMMUNICATIONS LLC 4

BANDWIDTH.COM CLEC, LLC - CA 4

OPENTACT 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
2023-12-05	559-523-1XXX	1000–1999	Assigned	ONVOY SPECTRUM, LLC	624H	PIXLEY	CA
2023-12-05	559-526-8XXX	8000–8999	Assigned	ONVOY SPECTRUM, LLC	624H	STRATFORD	CA
2023-12-05	559-528-7XXX	7000–7999	Assigned	ONVOY SPECTRUM, LLC	624H	DINUBA	CA
2023-12-05	559-561-9XXX	9000–9999	Assigned	ONVOY SPECTRUM, LLC	624H	THREERIVRS	CA
2023-12-05	559-565-9XXX	9000–9999	Assigned	ONVOY SPECTRUM, LLC	624H	SEQUOIA	CA
2023-12-05	559-571-8XXX	8000–8999	Assigned	ONVOY SPECTRUM, LLC	624H	VISALIA	CA
2023-12-05	559-742-1XXX	1000–1999	Assigned	ONVOY SPECTRUM, LLC	624H	RIVERDALE	CA
2023-12-05	559-758-1XXX	1000–1999	Assigned	ONVOY SPECTRUM, LLC	624H	PARLIER	CA
2023-12-05	559-792-4XXX	4000–4999	Assigned	ONVOY SPECTRUM, LLC	624H	PORTERVL	CA
2023-12-05	559-870-8XXX	8000–8999	Assigned	ONVOY SPECTRUM, LLC	624H	TULARE	CA
2023-12-05	559-874-0XXX	0000–0999	Assigned	ONVOY SPECTRUM, LLC	624H	CLOVIS	CA
2023-12-05	559-880-1XXX	1000–1999	Assigned	ONVOY SPECTRUM, LLC	624H	LEMOORE	CA
2023-12-05	559-933-1XXX	1000–1999	Assigned	ONVOY SPECTRUM, LLC	624H	FIREBAUGH	CA
2023-12-05	559-961-0XXX	0000–0999	Assigned	ONVOY SPECTRUM, LLC	624H	COALINGA	CA
2023-12-05	559-963-8XXX	8000–8999	Assigned	ONVOY SPECTRUM, LLC	624H	LATON	CA
2023-12-01	559-874-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	CLOVIS	CA
2023-12-01	559-874-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	CLOVIS	CA
2023-12-01	559-874-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	CLOVIS	CA
2023-12-01	559-874-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	CLOVIS	CA
2023-12-01	559-874-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	CLOVIS	CA
2023-11-20	559-670-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HANFORD	CA
2023-11-20	559-806-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	VISALIA	CA
2023-11-07	559-218-5XXX	5000–5999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	FRESNO	CA
2023-11-01	559-881-1XXX	1000–1999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	FRESNO	CA
2023-11-01	559-881-2XXX	2000–2999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	FRESNO	CA
2023-11-01	559-881-3XXX	3000–3999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	FRESNO	CA
2023-11-01	559-881-4XXX	4000–4999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	FRESNO	CA
2023-11-01	559-881-5XXX	5000–5999	Assigned	COMCAST PHONE OF CALIFORNIA, LLC	394L	FRESNO	CA
2023-10-31	559-505-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	MADERA	CA
2023-10-31	559-505-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	MADERA	CA
2023-10-31	559-505-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	MADERA	CA
2023-10-26	559-880-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	LEMOORE	CA
2023-10-25	559-218-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FRESNO	CA
2023-10-25	559-218-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FRESNO	CA
2023-10-25	559-218-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FRESNO	CA
2023-10-25	559-218-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FRESNO	CA
2023-10-25	559-218-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FRESNO	CA
2023-10-25	559-218-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FRESNO	CA
2023-10-23	559-376-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	TERRABELLA	CA
2023-10-18	559-812-2XXX	2000–2999	Assigned	UTILITY TELECOM GROUP, LLC - CA	9262	CHOWCHILLA	CA
2023-10-06	559-755-0XXX	0000–0999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	KERMAN	CA
2023-10-04	559-617-5XXX	5000–5999	Assigned	ONVOY, LLC - CA	649C	KINGSBURG	CA
2023-10-04	559-617-6XXX	6000–6999	Assigned	ONVOY, LLC - CA	649C	KINGSBURG	CA
2023-10-04	559-617-7XXX	7000–7999	Assigned	ONVOY, LLC - CA	649C	KINGSBURG	CA
2023-10-04	559-617-8XXX	8000–8999	Assigned	ONVOY, LLC - CA	649C	KINGSBURG	CA
2023-10-04	559-617-9XXX	9000–9999	Assigned	ONVOY, LLC - CA	649C	KINGSBURG	CA
2023-10-04	559-872-0XXX	0000–0999	Assigned	ONVOY, LLC - CA	649C	CLOVIS	CA
2023-10-04	559-872-3XXX	3000–3999	Assigned	ONVOY, LLC - CA	649C	CLOVIS	CA
2023-10-04	559-874-2XXX	2000–2999	Assigned	ONVOY, LLC - CA	649C	CLOVIS	CA
2023-10-04	559-879-0XXX	0000–0999	Assigned	ONVOY, LLC - CA	649C	VISALIA	CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.