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 415
BOOST SUBSCRIBERCO L.L.C. 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
2014-09-03 415-993-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2014-09-03 415-993-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2014-09-03 415-993-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2014-09-03 415-993-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2014-09-03 415-993-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2014-09-02 415-980-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNFC JUNPR CA
2014-08-29 415-629-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNFC MT-EV CA
2014-08-28 415-579-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2014-08-28 415-579-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2014-08-28 415-792-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2014-08-28 415-792-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2014-08-26 415-960-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BELVEDERE CA
2014-08-22 415-579-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2014-08-22 415-579-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2014-08-22 415-579-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2014-08-22 415-769-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SNFC JUNPR CA
2014-08-21 415-792-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2014-08-21 415-792-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2014-08-21 415-792-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2014-08-18 415-629-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2014-08-18 415-629-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2014-08-18 415-629-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2014-08-18 415-629-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2014-08-18 415-964-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2014-08-18 415-964-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2014-08-18 415-964-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2014-08-18 415-964-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2014-08-15 415-936-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CORTEMADRA CA
2014-08-15 415-965-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STNSN-BLNS CA
2014-08-14 415-579-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2014-08-14 415-579-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2014-08-14 415-579-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2014-08-14 415-579-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2014-08-14 415-579-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFC CNTRL CA
2014-08-12 415-629-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC MT-EV CA
2014-08-12 415-634-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MILLVALLEY CA
2014-08-12 415-769-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC JUNPR CA
2014-08-12 415-960-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELVEDERE CA
2014-08-11 415-621-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2014-08-11 415-629-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC MT-EV CA
2014-08-11 415-849-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CORTEMADRA CA
2014-08-11 415-849-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CORTEMADRA CA
2014-08-11 415-849-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CORTEMADRA CA
2014-08-11 415-915-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2014-08-11 415-915-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2014-08-11 415-915-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2014-08-11 415-915-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2014-08-11 415-915-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2014-08-11 415-915-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2014-08-11 415-915-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL 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.