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
2007-09-27 818-277-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-27 818-277-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-27 818-277-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-27 818-277-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-27 818-277-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-27 818-277-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-27 818-277-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-27 818-277-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-27 818-290-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-27 818-290-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-27 818-290-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-27 818-290-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-27 818-305-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2007-09-27 818-305-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2007-09-27 818-305-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2007-09-14 818-308-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K NO HOLLYWD CA
2007-09-14 818-738-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NO HOLLYWD CA
2007-09-14 818-738-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NO HOLLYWD CA
2007-09-14 818-738-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NO HOLLYWD CA
2007-09-13 818-433-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2007-09-13 818-579-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2007-09-11 818-331-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BRBN BRBN CA
2007-09-11 818-397-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BRBN BRBN CA
2007-09-11 818-397-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BRBN BRBN CA
2007-09-11 818-397-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BRBN BRBN CA
2007-09-11 818-748-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BRBN BRBN CA
2007-09-07 818-824-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NO HOLLYWD CA
2007-09-05 818-297-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D CANOGAPARK CA
2007-09-05 818-297-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D CANOGAPARK CA
2007-09-05 818-857-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D CANOGAPARK CA
2007-09-02 818-626-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 NORTHRIDGE CA
2007-08-20 818-967-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRBN BRBN CA
2007-08-20 818-967-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRBN BRBN CA
2007-08-20 818-967-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRBN BRBN CA
2007-08-20 818-967-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRBN BRBN CA
2007-08-14 818-807-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-08-14 818-809-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-08-14 818-809-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-08-14 818-809-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-08-14 818-849-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-08-14 818-849-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-08-14 818-914-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CANOGAPARK CA
2007-08-14 818-914-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CANOGAPARK CA
2007-08-08 818-914-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J CANOGAPARK CA
2007-08-02 818-573-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SNFN PACM CA
2007-07-31 818-484-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GLENDALE CA
2007-07-20 818-854-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2007-07-19 818-748-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2007-07-19 818-854-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CANOGAPARK CA
2007-07-19 818-923-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SNFN GRHL 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.