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
2014-07-23 909-443-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D ONTARIO CA
2014-07-23 909-443-4XXX 4000–4999Assigned HD CARRIER LLC 321J ONTARIO CA
2014-07-23 909-491-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C FONTANA CA
2014-07-22 909-306-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHINO CA
2014-07-22 909-340-8XXX 8000–8999Assigned HD CARRIER LLC 321J BIGBEAR LK CA
2014-07-22 909-375-5XXX 5000–5999Assigned HD CARRIER LLC 321J BIGBEAR CY CA
2014-07-22 909-480-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CLAREMONT CA
2014-07-22 909-491-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FONTANA CA
2014-07-22 909-491-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FONTANA CA
2014-07-22 909-491-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FONTANA CA
2014-07-22 909-929-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CLAREMONT CA
2014-07-22 909-929-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CLAREMONT CA
2014-07-15 909-492-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MENTONE CA
2014-07-15 909-929-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CLAREMONT CA
2014-07-15 909-929-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CLAREMONT CA
2014-07-09 909-341-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C RIALTO CA
2014-07-09 909-352-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MARSHALL CA
2014-07-09 909-493-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2014-07-03 909-929-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CLAREMONT CA
2014-06-24 909-491-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FONTANA CA
2014-06-23 909-359-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HIGHLAND CA
2014-06-23 909-614-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHINO CA
2014-06-20 909-453-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 S BERNDINO CA
2014-06-20 909-453-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 S BERNDINO CA
2014-06-20 909-491-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2014-06-20 909-491-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2014-06-20 909-491-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2014-06-19 909-375-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BIGBEAR CY CA
2014-06-19 909-375-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BIGBEAR CY CA
2014-06-19 909-378-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DIAMONDBAR CA
2014-06-19 909-378-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DIAMONDBAR CA
2014-06-19 909-929-6XXX 6000–6999Assigned PACIFIC BELL (COMPETITIVE) 7480 CLAREMONT CA
2014-06-16 909-219-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COLTON CA
2014-06-16 909-326-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J POMONA CA
2014-06-16 909-372-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CALIMESA CA
2014-06-13 909-492-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MENTONE CA
2014-06-10 909-312-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDLANDS CA
2014-06-10 909-312-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDLANDS CA
2014-06-10 909-312-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDLANDS CA
2014-06-10 909-312-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDLANDS CA
2014-06-10 909-312-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDLANDS CA
2014-06-10 909-351-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MENTONE CA
2014-06-06 909-324-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RUNNINGSPG CA
2014-06-02 909-324-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RUNNINGSPG CA
2014-06-02 909-443-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ONTARIO CA
2014-05-30 909-325-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2014-05-29 909-351-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MENTONE CA
2014-05-29 909-352-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MARSHALL CA
2014-05-28 909-330-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ETIWANDA CA
2014-05-28 909-340-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BIGBEAR LK 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.