NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

27 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 951
ONVOY, LLC - CA 25
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 1
BANDWIDTH.COM CLEC, 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
2021-02-05 951-564-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C PERRIS CA
2021-02-05 951-564-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PERRIS CA
2021-02-05 951-564-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C PERRIS CA
2021-02-05 951-724-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C HEMT HMLD CA
2021-02-05 951-724-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C HEMT HMLD CA
2021-02-05 951-724-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C HEMT HMLD CA
2021-02-01 951-574-0XXX 0000–0999Assigned TELNYX LLC 073H MURRIETA CA
2021-01-28 951-507-1XXX 1000–1999Assigned TELNYX LLC 073H MIRA LOMA CA
2021-01-28 951-564-0XXX 0000–0999Assigned TELNYX LLC 073H PERRIS CA
2021-01-20 951-899-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2021-01-20 951-899-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2021-01-20 951-899-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2021-01-20 951-899-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2021-01-11 951-507-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MIRA LOMA CA
2021-01-07 951-557-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TEMSCL CNY CA
2021-01-07 951-557-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TEMSCL CNY CA
2021-01-07 951-577-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CORONA CA
2020-12-21 951-564-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PERRIS CA
2020-12-17 951-568-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-568-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-568-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-568-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-568-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-568-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-568-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-568-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-568-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-568-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-573-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-573-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-573-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-573-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-17 951-573-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-16 951-564-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2020-12-16 951-564-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2020-12-16 951-564-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2020-12-10 951-644-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C BANNING CA
2020-12-10 951-644-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BANNING CA
2020-12-10 951-644-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BANNING CA
2020-12-10 951-644-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BANNING CA
2020-12-09 951-560-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-09 951-560-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-09 951-560-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-09 951-560-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-09 951-560-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-09 951-560-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-09 951-560-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-09 951-560-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-09 951-560-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-09 951-560-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE 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.