NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

2 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2010-06-08 909-833-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CLAREMONT CA
2010-06-08 909-843-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D ONTARIO CA
2010-06-08 909-918-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CALIMESA CA
2010-06-08 909-961-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIALTO CA
2010-06-08 909-979-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DIAMONDBAR CA
2010-05-17 909-269-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D S BERNDINO CA
2010-05-17 909-545-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D ONTARIO CA
2010-05-03 909-272-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2010-04-19 909-320-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FONTANA CA
2010-04-13 909-589-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CRESTLINE CA
2010-04-13 909-689-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 ETIWANDA CA
2010-04-05 909-253-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDLANDS CA
2010-04-05 909-653-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 COLTON CA
2010-03-31 909-320-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 FONTANA CA
2010-03-12 909-446-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CALIMESA CA
2010-03-09 909-660-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J UPLAND CA
2010-03-08 909-961-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RIALTO CA
2010-03-03 909-320-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FONTANA CA
2010-03-03 909-833-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C CLAREMONT CA
2010-03-02 909-703-6XXX 6000–6999Assigned FRONTIER CALIFORNIA INC. 2319 CHINO CA
2010-02-26 909-320-3XXX 3000–3999Assigned CURATEL, LLC - CA 993B FONTANA CA
2010-02-26 909-320-4XXX 4000–4999Assigned CURATEL, LLC - CA 993B FONTANA CA
2010-02-26 909-961-0XXX 0000–0999Assigned CURATEL, LLC - CA 993B RIALTO CA
2010-02-23 909-277-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D S BERNDINO CA
2010-02-23 909-277-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D S BERNDINO CA
2010-02-23 909-509-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D ONTARIO CA
2010-02-22 909-521-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2010-02-22 909-521-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2010-02-22 909-529-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHINO CA
2010-02-22 909-529-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHINO CA
2010-02-22 909-529-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHINO CA
2010-02-22 909-833-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CLAREMONT CA
2010-02-22 909-833-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CLAREMONT CA
2010-02-18 909-660-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E UPLAND CA
2010-02-16 909-320-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2010-02-16 909-320-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2010-02-16 909-320-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2010-02-12 909-272-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2010-02-11 909-245-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C CRESTLINE CA
2010-02-11 909-277-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D S BERNDINO CA
2010-02-10 909-277-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C S BERNDINO CA
2010-02-10 909-610-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C DIAMONDBAR CA
2010-02-10 909-742-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C HIGHLAND CA
2010-02-09 909-660-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2010-02-09 909-660-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2010-02-09 909-660-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2010-02-09 909-703-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHINO CA
2010-02-09 909-703-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHINO CA
2010-02-08 909-255-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C REDLANDS CA
2010-02-08 909-265-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C RIALTO CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.