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 818
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
2005-03-30 818-461-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2005-03-30 818-939-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2005-03-25 818-584-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 AGOURA CA
2005-03-25 818-584-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 AGOURA CA
2005-03-23 818-748-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BRBN BRBN CA
2005-03-22 818-428-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NORTHRIDGE CA
2005-03-22 818-435-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NORTHRIDGE CA
2005-03-22 818-593-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2005-03-22 818-741-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2005-03-22 818-741-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2005-03-21 818-306-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LACRSCENTA CA
2005-03-21 818-306-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LACRSCENTA CA
2005-03-21 818-746-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CANOGAPARK CA
2005-03-21 818-746-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CANOGAPARK CA
2005-03-16 818-239-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2005-03-14 818-230-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GLENDALE CA
2005-03-14 818-435-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NORTHRIDGE CA
2005-03-14 818-984-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2005-03-14 818-984-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2005-03-11 818-441-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2005-03-11 818-450-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2005-03-11 818-450-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2005-03-10 818-760-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NO HOLLYWD CA
2005-03-10 818-808-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2005-03-10 818-808-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2005-03-10 818-808-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2005-03-10 818-809-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2005-03-10 818-809-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2005-03-10 818-939-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2005-03-09 818-737-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 CANOGAPARK CA
2005-03-09 818-921-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 RESEDA CA
2005-03-08 818-536-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 VAN NUYS CA
2005-03-08 818-536-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 VAN NUYS CA
2005-03-08 818-665-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 AGOURA CA
2005-03-08 818-804-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 VAN NUYS CA
2005-03-08 818-804-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 VAN NUYS CA
2005-03-07 818-572-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2005-03-07 818-984-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2005-03-04 818-230-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GLENDALE CA
2005-03-04 818-338-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AGOURA CA
2005-03-04 818-479-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 VAN NUYS CA
2005-03-04 818-518-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C CANOGAPARK CA
2005-03-03 818-602-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D VAN NUYS CA
2005-03-03 818-602-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D VAN NUYS CA
2005-03-03 818-658-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J LACRSCENTA CA
2005-03-02 818-245-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GLENDALE CA
2005-03-02 818-292-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 AGOURA CA
2005-03-02 818-484-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GLENDALE CA
2005-03-02 818-484-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GLENDALE CA
2005-03-02 818-484-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C GLENDALE 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.