NumberResearch Membership · Data 09/20/2026

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 323
ONVOY, 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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2009-12-14 323-915-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 06 CA
2009-12-14 323-915-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 06 CA
2009-12-09 323-247-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2009-12-09 323-247-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2009-12-07 323-475-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LSAN DA 05 CA
2009-11-16 323-837-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MONTEBELLO CA
2009-11-06 323-204-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LSAN DA 06 CA
2009-11-06 323-523-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LSAN DA 06 CA
2009-11-06 323-537-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LSAN DA 06 CA
2009-11-06 323-979-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LSAN DA 06 CA
2009-10-30 323-241-4XXX 4000–4999Assigned PACIFIC BELL 9740 LSAN DA 09 CA
2009-10-28 323-214-4XXX 4000–4999Assigned PACIFIC BELL 9740 LSAN DA 06 CA
2009-10-27 323-305-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 09 CA
2009-10-27 323-305-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 09 CA
2009-10-27 323-305-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 09 CA
2009-10-27 323-815-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 12 CA
2009-10-09 323-614-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MONTEBELLO CA
2009-10-09 323-629-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MONTEBELLO CA
2009-10-02 323-523-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LSAN DA 06 CA
2009-10-02 323-523-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LSAN DA 06 CA
2009-09-16 323-973-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J LSAN DA 06 CA
2009-09-11 323-592-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 13 CA
2009-09-11 323-952-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LSAN DA 14 CA
2009-09-09 323-895-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2009-09-09 323-895-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2009-08-31 323-798-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LSAN DA 14 CA
2009-08-20 323-695-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2009-08-20 323-695-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2009-08-20 323-895-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2009-08-19 323-247-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LSAN DA 14 CA
2009-08-19 323-247-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LSAN DA 14 CA
2009-08-19 323-247-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C LSAN DA 14 CA
2009-08-19 323-331-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C LSAN DA 02 CA
2009-08-19 323-345-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C LSAN DA 02 CA
2009-08-19 323-432-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LSAN DA 08 CA
2009-08-19 323-432-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LSAN DA 08 CA
2009-08-19 323-432-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LSAN DA 08 CA
2009-08-19 323-454-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C LSAN DA 02 CA
2009-08-19 323-454-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LSAN DA 02 CA
2009-08-19 323-521-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LSAN DA 08 CA
2009-08-19 323-521-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LSAN DA 08 CA
2009-08-19 323-521-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LSAN DA 08 CA
2009-08-19 323-952-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LSAN DA 14 CA
2009-08-19 323-952-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LSAN DA 14 CA
2009-08-19 323-963-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 14 CA
2009-08-19 323-963-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LSAN DA 14 CA
2009-08-18 323-500-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MONTEBELLO CA
2009-08-12 323-220-0XXX 0000–0999Assigned CURATEL, LLC - CA 993B LSAN DA 11 CA
2009-08-12 323-374-9XXX 9000–9999Assigned CURATEL, LLC - CA 993B LSAN DA 06 CA
2009-08-12 323-518-0XXX 0000–0999Assigned CURATEL, LLC - CA 993B LSAN DA 05 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.