NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 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
2016-08-29 909-699-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 COLTON CA
2016-08-26 909-323-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DIAMONDBAR CA
2016-08-26 909-588-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MENTONE CA
2016-08-25 909-640-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 RIALTO CA
2016-08-25 909-640-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 RIALTO CA
2016-08-24 909-550-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D FONTANA CA
2016-08-22 909-505-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BIGBEAR CY CA
2016-08-22 909-505-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BIGBEAR CY CA
2016-08-22 909-505-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BIGBEAR CY CA
2016-08-18 909-417-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K POMONA CA
2016-08-10 909-479-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K CHINO CA
2016-08-08 909-413-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2016-08-08 909-413-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2016-08-08 909-413-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2016-08-08 909-414-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2016-08-08 909-640-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C RIALTO CA
2016-08-04 909-756-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2016-08-04 909-756-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2016-08-04 909-756-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2016-08-04 909-756-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2016-08-03 909-686-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C MENTONE CA
2016-08-02 909-318-4XXX 4000–4999Assigned HD CARRIER LLC 321J BIGBEAR LK CA
2016-08-02 909-318-5XXX 5000–5999Assigned HD CARRIER LLC 321J BIGBEAR LK CA
2016-08-02 909-488-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDLANDS CA
2016-07-29 909-500-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CALIMESA CA
2016-07-28 909-323-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DIAMONDBAR CA
2016-07-28 909-406-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDLANDS CA
2016-07-26 909-413-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CHINO CA
2016-07-26 909-506-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLAREMONT CA
2016-07-26 909-683-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MARSHALL CA
2016-07-25 909-413-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C CHINO CA
2016-07-25 909-550-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FONTANA CA
2016-07-25 909-787-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D RIALTO CA
2016-07-22 909-750-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ONTARIO CA
2016-07-22 909-750-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ONTARIO CA
2016-07-22 909-750-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ONTARIO CA
2016-07-22 909-750-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ONTARIO CA
2016-07-21 909-639-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E COLTON CA
2016-07-21 909-870-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 UPLAND CA
2016-07-21 909-870-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 UPLAND CA
2016-07-20 909-683-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MARSHALL CA
2016-07-20 909-741-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CLAREMONT CA
2016-07-19 909-490-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ONTARIO CA
2016-07-19 909-756-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C S BERNDINO CA
2016-07-19 909-756-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C S BERNDINO CA
2016-07-19 909-870-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E UPLAND CA
2016-07-14 909-406-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C REDLANDS CA
2016-07-14 909-406-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C REDLANDS CA
2016-07-14 909-490-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C ONTARIO CA
2016-07-14 909-490-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C ONTARIO 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.