NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

25 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 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
2021-02-02 820-500-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C GAVIOTA CA
2021-02-02 820-500-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C GAVIOTA CA
2021-02-02 820-888-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D SIMIVALLEY CA
2021-01-29 820-346-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARROYOGRND CA
2021-01-29 820-346-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARROYOGRND CA
2021-01-27 820-288-8XXX 8000–8999Assigned FRACTEL, LLC 965H VNTRA EAST CA
2021-01-27 820-299-9XXX 9000–9999Assigned FRACTEL, LLC 965H CAMARILLO CA
2021-01-20 820-222-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CAMARILLO CA
2021-01-13 820-356-9XXX 9000–9999Assigned FRACTEL, LLC 965H POINT MUGU CA
2021-01-13 820-899-9XXX 9000–9999Assigned FRACTEL, LLC 965H SANTAMARIA CA
2021-01-11 820-348-6XXX 6000–6999Assigned FRACTEL, LLC 965H OXNARD CA
2020-12-11 820-234-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C OXNARD CA
2020-12-11 820-234-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C OXNARD CA
2020-12-11 820-234-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C OXNARD CA
2020-12-02 820-234-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2020-12-02 820-234-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2020-12-02 820-465-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2020-12-02 820-946-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2020-12-02 820-946-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2020-11-16 820-346-2XXX 2000–2999Assigned FRACTEL, LLC 965H ARROYOGRND CA
2020-11-09 820-222-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2020-11-09 820-222-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2020-11-09 820-222-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CAMARILLO CA
2020-11-04 820-842-5XXX 5000–5999Assigned FRACTEL, LLC 965H OAKVIEW CA
2020-11-03 820-345-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E EL RIO CA
2020-11-03 820-345-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E EL RIO CA
2020-10-27 820-800-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CAYUCOS CA
2020-10-21 820-946-2XXX 2000–2999Assigned METROPCS, INC. 5562 SANTAMARIA CA
2020-10-20 820-345-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL RIO CA
2020-10-15 820-465-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2020-10-15 820-465-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2020-10-12 820-732-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA CNTL CA
2020-10-09 820-222-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CAMARILLO CA
2020-10-07 820-465-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H OXNARD CA
2020-09-24 820-529-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PIRU CA
2020-09-24 820-946-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2020-09-17 820-234-5XXX 5000–5999Assigned FRACTEL, LLC 965H OXNARD CA
2020-09-02 820-465-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2020-09-02 820-465-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2020-08-25 820-758-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2020-08-25 820-758-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2020-08-14 820-444-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NEWBURYPRK CA
2020-08-12 820-946-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2020-08-04 820-345-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E EL RIO CA
2020-08-04 820-345-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E EL RIO CA
2020-07-16 820-732-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VNTRA CNTL CA
2020-07-10 820-465-8XXX 8000–8999Assigned FRACTEL, LLC 965H OXNARD CA
2020-07-10 820-732-5XXX 5000–5999Assigned FRACTEL, LLC 965H VNTRA CNTL CA
2020-07-10 820-758-6XXX 6000–6999Assigned FRACTEL, LLC 965H SANBARBARA CA
2020-07-10 820-946-3XXX 3000–3999Assigned FRACTEL, LLC 965H SANTAMARIA 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.