NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

1 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 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
2021-03-02 323-781-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H LSAN DA 09 CA
2021-03-02 323-927-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H LSAN DA 11 CA
2021-02-22 323-372-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2021-02-16 323-833-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 09 CA
2021-01-25 323-393-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2021-01-25 323-393-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2020-11-10 323-289-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J LSAN DA 12 CA
2020-11-10 323-402-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J LSAN DA 11 CA
2020-11-10 323-757-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J LSAN DA 09 CA
2020-06-02 323-831-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LSAN DA 05 CA
2020-05-22 323-335-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 02 CA
2020-04-10 323-398-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LSAN DA 03 CA
2020-03-31 323-760-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LSAN DA 14 CA
2020-03-31 323-760-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LSAN DA 14 CA
2020-03-25 323-621-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2020-03-25 323-693-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2020-03-25 323-693-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2020-03-09 323-657-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 08 CA
2020-03-09 323-760-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 14 CA
2020-03-09 323-927-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 11 CA
2020-03-09 323-949-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MONTEBELLO CA
2020-03-09 323-982-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 03 CA
2019-12-18 323-220-8XXX 8000–8999Assigned TELNYX LLC 073H LSAN DA 11 CA
2019-12-02 323-328-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 11 CA
2019-12-02 323-657-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 08 CA
2019-11-27 323-684-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LSAN DA 03 CA
2019-11-15 323-400-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MONTEBELLO CA
2019-11-13 323-214-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LSAN DA 06 CA
2019-11-13 323-763-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LSAN DA 06 CA
2019-09-26 323-393-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-09-26 323-400-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2019-09-26 323-492-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-09-26 323-685-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2019-09-26 323-760-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2019-09-26 323-760-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2019-09-26 323-760-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2019-09-26 323-770-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-09-26 323-772-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-09-25 323-729-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 05 CA
2019-08-26 323-330-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2019-08-26 323-595-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2019-08-26 323-949-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2019-08-26 323-949-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2019-08-13 323-676-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LSAN DA 08 CA
2019-08-13 323-760-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LSAN DA 14 CA
2019-08-13 323-766-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LSAN DA 11 CA
2019-08-05 323-949-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2019-08-05 323-949-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2019-07-29 323-418-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-07-29 323-529-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LSAN DA 11 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.