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
2005-12-14 909-810-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MENTONE CA
2005-12-14 909-965-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2005-12-14 909-965-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2005-12-07 909-782-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 FONTANA CA
2005-12-07 909-782-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FONTANA CA
2005-12-06 909-287-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHINO CA
2005-12-06 909-297-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2005-12-06 909-657-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ONTARIO CA
2005-12-05 909-784-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2005-12-05 909-922-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J ETIWANDA CA
2005-11-30 909-478-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDLANDS CA
2005-11-22 909-747-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 REDLANDS CA
2005-11-21 909-653-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 COLTON CA
2005-11-21 909-747-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 REDLANDS CA
2005-11-18 909-653-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 COLTON CA
2005-11-18 909-653-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLTON CA
2005-11-18 909-653-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLTON CA
2005-11-18 909-693-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 S BERNDINO CA
2005-11-16 909-474-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MARSHALL CA
2005-11-15 909-587-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FONTANA CA
2005-11-15 909-587-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FONTANA CA
2005-11-15 909-693-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 S BERNDINO CA
2005-11-15 909-693-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 S BERNDINO CA
2005-11-14 909-480-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CLAREMONT CA
2005-11-14 909-587-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FONTANA CA
2005-11-11 909-975-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ONTARIO CA
2005-11-10 909-297-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 UPLAND CA
2005-11-10 909-653-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 COLTON CA
2005-11-10 909-942-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 UPLAND CA
2005-11-01 909-373-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J UPLAND CA
2005-11-01 909-587-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FONTANA CA
2005-11-01 909-658-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2005-11-01 909-658-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 S BERNDINO CA
2005-11-01 909-658-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 S BERNDINO CA
2005-11-01 909-658-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 S BERNDINO CA
2005-10-28 909-389-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MENTONE CA
2005-10-28 909-543-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIALTO CA
2005-10-27 909-287-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CHINO CA
2005-10-27 909-693-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D S BERNDINO CA
2005-10-27 909-784-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 POMONA CA
2005-10-27 909-784-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 POMONA CA
2005-10-24 909-634-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2005-10-21 909-634-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 POMONA CA
2005-10-20 909-634-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 POMONA CA
2005-10-14 909-693-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D S BERNDINO CA
2005-10-14 909-694-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 UPLAND CA
2005-10-14 909-694-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 UPLAND CA
2005-10-14 909-694-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 UPLAND CA
2005-10-14 909-694-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 UPLAND CA
2005-10-14 909-907-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HIGHLAND 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.