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
2017-03-29 323-914-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 MONTEBELLO CA
2017-03-29 323-914-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 MONTEBELLO CA
2017-03-29 323-914-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 MONTEBELLO CA
2017-03-21 323-347-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LSAN DA 12 CA
2017-03-14 323-471-6XXX 6000–6999Assigned TELNYX LLC 073H LSAN DA 14 CA
2017-03-14 323-516-1XXX 1000–1999Assigned TELNYX LLC 073H MONTEBELLO CA
2017-03-14 323-996-7XXX 7000–7999Assigned TELNYX LLC 073H LSAN DA 06 CA
2017-03-08 323-398-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2017-03-08 323-509-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2017-03-08 323-925-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2017-03-03 323-471-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2017-03-03 323-853-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MONTEBELLO CA
2017-03-03 323-994-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2017-03-03 323-994-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2017-02-22 323-917-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LSAN DA 13 CA
2017-02-22 323-996-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 06 CA
2017-02-22 323-996-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 06 CA
2017-02-17 323-208-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C LSAN DA 09 CA
2017-02-17 323-678-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2017-02-17 323-770-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2017-02-17 323-770-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2017-02-14 323-925-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C LSAN DA 03 CA
2017-02-14 323-925-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C LSAN DA 03 CA
2017-02-08 323-925-0XXX 0000–0999Assigned IP HORIZON LLC 515J LSAN DA 03 CA
2017-01-17 323-994-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C LSAN DA 14 CA
2017-01-13 323-618-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LSAN DA 02 CA
2017-01-13 323-986-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LSAN DA 04 CA
2017-01-10 323-996-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C LSAN DA 06 CA
2017-01-10 323-996-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LSAN DA 06 CA
2017-01-10 323-996-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C LSAN DA 06 CA
2017-01-05 323-618-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 02 CA
2017-01-05 323-618-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 02 CA
2017-01-05 323-618-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 02 CA
2017-01-05 323-994-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2017-01-05 323-994-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2017-01-05 323-996-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 06 CA
2016-12-29 323-994-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LSAN DA 14 CA
2016-12-29 323-994-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LSAN DA 14 CA
2016-12-16 323-618-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 02 CA
2016-12-16 323-618-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 02 CA
2016-12-16 323-618-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 02 CA
2016-12-16 323-994-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2016-12-16 323-994-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2016-11-28 323-713-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2016-11-28 323-713-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2016-11-28 323-713-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2016-11-28 323-781-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2016-11-28 323-831-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2016-11-28 323-961-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2016-11-28 323-986-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LSAN DA 04 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.