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
2003-10-21 909-610-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J DIAMONDBAR CA
2003-10-15 909-991-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2003-10-14 909-525-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2003-10-14 909-618-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2003-09-25 909-563-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D ONTARIO CA
2003-09-25 909-972-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D ONTARIO CA
2003-09-25 909-972-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D ONTARIO CA
2003-09-24 909-266-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2003-09-24 909-978-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 DIAMONDBAR CA
2003-09-23 909-349-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D FONTANA CA
2003-09-23 909-554-2XXX 2000–2999Assigned IP HORIZON LLC 515J COLTON CA
2003-09-19 909-447-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CLAREMONT CA
2003-09-18 909-282-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2003-09-18 909-282-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2003-09-18 909-282-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2003-09-17 909-282-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2003-09-17 909-618-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2003-09-17 909-618-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2003-09-17 909-618-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2003-09-17 909-646-9XXX 9000–9999Assigned FRONTIER CALIFORNIA INC. 2319 ETIWANDA CA
2003-09-17 909-973-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2003-09-17 909-973-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2003-09-10 909-200-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FONTANA CA
2003-09-02 909-728-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FONTANA CA
2003-08-22 909-292-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2003-08-22 909-292-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2003-08-22 909-292-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2003-08-22 909-292-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2003-08-22 909-472-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2003-08-22 909-472-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2003-08-21 909-292-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ONTARIO CA
2003-08-15 909-649-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HIGHLAND CA
2003-08-15 909-649-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HIGHLAND CA
2003-08-15 909-649-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HIGHLAND CA
2003-08-15 909-649-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HIGHLAND CA
2003-08-15 909-649-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HIGHLAND CA
2003-08-15 909-758-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J UPLAND CA
2003-08-14 909-528-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MENTONE CA
2003-08-04 909-831-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2003-08-04 909-831-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2003-08-04 909-831-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2003-08-04 909-991-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2003-08-04 909-991-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2003-08-04 909-991-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2003-07-16 909-568-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLAREMONT CA
2003-07-16 909-728-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D FONTANA CA
2003-07-16 909-728-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D FONTANA CA
2003-07-15 909-474-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MARSHALL CA
2003-07-07 909-632-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2003-07-07 909-632-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 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.