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
2005-10-13 909-373-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2005-10-13 909-373-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2005-10-13 909-373-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2005-10-12 909-273-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ARROWHEAD CA
2005-10-12 909-273-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ARROWHEAD CA
2005-10-12 909-362-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HIGHLAND CA
2005-10-12 909-693-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 S BERNDINO CA
2005-10-12 909-693-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 S BERNDINO CA
2005-10-12 909-693-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 S BERNDINO CA
2005-10-12 909-693-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 S BERNDINO CA
2005-10-11 909-287-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHINO CA
2005-10-11 909-573-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHINO CA
2005-10-11 909-583-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDLANDS CA
2005-10-11 909-583-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDLANDS CA
2005-10-11 909-638-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2005-10-11 909-638-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2005-10-11 909-638-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2005-10-11 909-638-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2005-10-10 909-538-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2005-10-10 909-993-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D CHINO CA
2005-10-07 909-475-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MARSHALL CA
2005-10-07 909-543-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RIALTO CA
2005-10-07 909-610-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DIAMONDBAR CA
2005-10-05 909-922-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ETIWANDA CA
2005-10-04 909-638-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ONTARIO CA
2005-10-03 909-653-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 COLTON CA
2005-10-03 909-657-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ONTARIO CA
2005-10-03 909-657-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ONTARIO CA
2005-10-03 909-657-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ONTARIO CA
2005-10-03 909-657-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ONTARIO CA
2005-10-03 909-907-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HIGHLAND CA
2005-10-03 909-922-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ETIWANDA CA
2005-09-28 909-612-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K DIAMONDBAR CA
2005-09-26 909-962-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 CLAREMONT CA
2005-09-26 909-978-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 DIAMONDBAR CA
2005-09-23 909-587-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D FONTANA CA
2005-09-23 909-587-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D FONTANA CA
2005-09-23 909-782-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2005-09-23 909-782-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2005-09-23 909-782-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2005-09-23 909-782-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2005-09-20 909-631-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2005-09-20 909-705-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MENTONE CA
2005-09-20 909-723-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 S BERNDINO CA
2005-09-20 909-991-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 S BERNDINO CA
2005-09-16 909-543-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RIALTO CA
2005-09-16 909-543-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RIALTO CA
2005-09-16 909-587-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C FONTANA CA
2005-09-16 909-723-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J S BERNDINO CA
2005-09-08 909-538-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 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.