NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

14 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 805
ONVOY, LLC - CA 11
TELNYX LLC 1
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
2016-09-28 805-401-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D OXNARD CA
2016-09-23 805-917-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K THOUSAOAKS CA
2016-09-22 805-318-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CARPINTRIA CA
2016-09-20 805-401-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OXNARD CA
2016-09-19 805-935-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CAMBRIA CA
2016-09-15 805-707-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OJAI CA
2016-09-14 805-638-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D SIMIVALLEY CA
2016-09-13 805-638-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SIMIVALLEY CA
2016-09-02 805-825-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ARROYOGRND CA
2016-08-30 805-858-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SNLUSOBSPO CA
2016-08-26 805-821-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SNLUSOBSPO CA
2016-08-22 805-507-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VNTRA CNTL CA
2016-08-22 805-572-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-22 805-572-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-22 805-572-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-22 805-572-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-22 805-572-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-22 805-572-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-18 805-638-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K SIMIVALLEY CA
2016-08-16 805-554-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2016-08-16 805-833-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VNTRA EAST CA
2016-08-15 805-707-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OJAI CA
2016-08-12 805-342-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-12 805-342-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-12 805-342-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-12 805-342-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-12 805-397-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D OXNARD CA
2016-08-12 805-397-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-12 805-397-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D OXNARD CA
2016-08-12 805-513-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-12 805-513-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-12 805-513-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-12 805-539-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ATASCADERO CA
2016-08-12 805-854-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-12 805-854-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-10 805-209-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MOORPARK CA
2016-08-10 805-507-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VNTRA CNTL CA
2016-08-10 805-825-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ARROYOGRND CA
2016-08-09 805-586-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CAMARILLO CA
2016-08-09 805-857-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 THOUSAOAKS CA
2016-08-08 805-724-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2016-07-27 805-307-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C EL RIO CA
2016-07-25 805-548-3XXX 3000–3999Assigned HD CARRIER LLC 321J SNLUSOBSPO CA
2016-07-25 805-548-4XXX 4000–4999Assigned HD CARRIER LLC 321J SNLUSOBSPO CA
2016-07-25 805-548-5XXX 5000–5999Assigned HD CARRIER LLC 321J SNLUSOBSPO CA
2016-07-25 805-548-6XXX 6000–6999Assigned HD CARRIER LLC 321J SNLUSOBSPO CA
2016-07-25 805-548-7XXX 7000–7999Assigned HD CARRIER LLC 321J SNLUSOBSPO CA
2016-07-25 805-548-9XXX 9000–9999Assigned HD CARRIER LLC 321J SNLUSOBSPO CA
2016-07-25 805-592-4XXX 4000–4999Assigned HD CARRIER LLC 321J SNLUSOBSPO CA
2016-07-25 805-592-5XXX 5000–5999Assigned HD CARRIER LLC 321J SNLUSOBSPO 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.