NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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 909
ONVOY, LLC - CA 6
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2
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
2004-11-19 909-348-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 DIAMONDBAR CA
2004-11-17 909-445-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CLAREMONT CA
2004-11-11 909-554-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 COLTON CA
2004-11-11 909-554-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 COLTON CA
2004-11-11 909-586-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RIALTO CA
2004-11-11 909-714-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FONTANA CA
2004-11-11 909-714-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FONTANA CA
2004-11-11 909-912-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2004-11-04 909-913-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2004-11-02 909-435-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 REDLANDS CA
2004-10-28 909-714-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FONTANA CA
2004-10-28 909-714-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FONTANA CA
2004-10-28 909-714-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FONTANA CA
2004-10-28 909-771-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2004-10-28 909-935-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ONTARIO CA
2004-10-28 909-935-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ONTARIO CA
2004-10-28 909-935-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ONTARIO CA
2004-10-27 909-379-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2004-10-27 909-450-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CLAREMONT CA
2004-10-22 909-714-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FONTANA CA
2004-10-22 909-714-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D FONTANA CA
2004-10-20 909-714-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2004-10-20 909-714-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2004-10-20 909-714-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2004-10-18 909-446-3XXX 3000–3999Assigned IP HORIZON LLC 515J CALIMESA CA
2004-10-18 909-446-4XXX 4000–4999Assigned IP HORIZON LLC 515J CALIMESA CA
2004-10-18 909-575-1XXX 1000–1999Assigned IP HORIZON LLC 515J CLAREMONT CA
2004-10-18 909-575-2XXX 2000–2999Assigned IP HORIZON LLC 515J CLAREMONT CA
2004-10-18 909-586-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 RIALTO CA
2004-10-18 909-589-7XXX 7000–7999Assigned IP HORIZON LLC 515J CRESTLINE CA
2004-10-18 909-589-8XXX 8000–8999Assigned IP HORIZON LLC 515J CRESTLINE CA
2004-10-18 909-740-7XXX 7000–7999Assigned IP HORIZON LLC 515J ONTARIO CA
2004-10-18 909-740-8XXX 8000–8999Assigned IP HORIZON LLC 515J ONTARIO CA
2004-10-18 909-758-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 UPLAND CA
2004-10-18 909-895-1XXX 1000–1999Assigned IP HORIZON LLC 515J DIAMONDBAR CA
2004-10-18 909-895-2XXX 2000–2999Assigned IP HORIZON LLC 515J DIAMONDBAR CA
2004-10-15 909-557-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDLANDS CA
2004-10-15 909-557-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDLANDS CA
2004-10-15 909-753-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CLAREMONT CA
2004-10-15 909-801-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDLANDS CA
2004-10-13 909-581-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 UPLAND CA
2004-10-13 909-810-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MENTONE CA
2004-10-12 909-631-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2004-10-12 909-647-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HIGHLAND CA
2004-10-11 909-859-7XXX 7000–7999Assigned PACIFIC BELL (COMPETITIVE) 7480 DIAMONDBAR CA
2004-10-11 909-921-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2004-10-11 909-921-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2004-10-11 909-921-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2004-10-11 909-921-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2004-10-08 909-455-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA 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.