NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

25 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 820
ONVOY, LLC - CA 18
T-MOBILE USA, INC. 3
NEW CINGULAR WIRELESS PCS, LLC 2
TELNYX LLC 1
PEERLESS NETWORK OF CALIFORNIA, 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
2021-06-26 820-299-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CAMARILLO CA
2021-06-26 820-333-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H THOUSAOAKS CA
2021-06-26 820-345-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H EL RIO CA
2021-06-26 820-444-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H NEWBURYPRK CA
2021-06-26 820-732-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H VNTRA CNTL CA
2021-06-03 820-348-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C OXNARD CA
2021-06-03 820-348-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C OXNARD CA
2021-06-03 820-348-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C OXNARD CA
2021-06-03 820-348-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C OXNARD CA
2021-06-03 820-348-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C OXNARD CA
2021-05-19 820-280-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LOS ALAMOS CA
2021-05-19 820-500-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E GAVIOTA CA
2021-05-15 820-758-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2021-05-15 820-758-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2021-05-05 820-946-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SANTAMARIA CA
2021-05-04 820-203-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ATASCADERO CA
2021-05-04 820-203-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ATASCADERO CA
2021-05-04 820-203-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ATASCADERO CA
2021-05-04 820-203-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ATASCADERO CA
2021-05-04 820-203-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ATASCADERO CA
2021-05-04 820-203-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ATASCADERO CA
2021-04-28 820-345-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL RIO CA
2021-04-28 820-732-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA CNTL CA
2021-04-15 820-356-7XXX 7000–7999Assigned FRACTEL, LLC 965H POINT MUGU CA
2021-04-13 820-800-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C CAYUCOS CA
2021-03-26 820-899-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTAMARIA CA
2021-03-26 820-899-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTAMARIA CA
2021-03-23 820-465-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OXNARD CA
2021-03-23 820-465-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OXNARD CA
2021-03-22 820-234-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2021-03-22 820-234-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2021-03-22 820-234-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D OXNARD CA
2021-03-22 820-280-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LOS ALAMOS CA
2021-03-17 820-203-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ATASCADERO CA
2021-03-17 820-899-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTAMARIA CA
2021-03-17 820-899-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTAMARIA CA
2021-03-15 820-336-8XXX 8000–8999Assigned FRACTEL, LLC 965H GUADALUPE CA
2021-03-12 820-203-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ATASCADERO CA
2021-03-12 820-203-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ATASCADERO CA
2021-03-12 820-203-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ATASCADERO CA
2021-03-09 820-777-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTAPAULA CA
2021-02-15 820-300-9XXX 9000–9999Assigned TELNYX LLC 073H GUADALUPE CA
2021-02-02 820-300-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C GUADALUPE CA
2021-02-02 820-300-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C GUADALUPE CA
2021-02-02 820-346-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C ARROYOGRND CA
2021-02-02 820-346-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C ARROYOGRND CA
2021-02-02 820-346-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C ARROYOGRND CA
2021-02-02 820-346-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C ARROYOGRND CA
2021-02-02 820-400-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C PARKFIELD CA
2021-02-02 820-400-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C PARKFIELD 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.