NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 312
BANDWIDTH.COM CLEC, LLC - IL 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
2026-09-03 312-546-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2026-07-09 312-376-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2026-04-08 312-679-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2026-04-08 312-679-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2026-04-02 312-679-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2026-04-02 312-679-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2026-04-01 312-426-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-04-01 312-426-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-04-01 312-426-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-04-01 312-426-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-04-01 312-426-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-04-01 312-679-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-04-01 312-679-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-04-01 312-679-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-04-01 312-679-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-04-01 312-779-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-03-19 312-426-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2026-02-20 312-426-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2026-01-29 312-679-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CHICGOZN01 IL
2026-01-29 312-679-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CHICGOZN01 IL
2026-01-27 312-426-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2026-01-27 312-426-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2026-01-27 312-426-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2026-01-15 312-452-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2026-01-15 312-452-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2025-12-12 312-452-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-12-12 312-452-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-12-12 312-452-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-11-04 312-459-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2025-11-04 312-554-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2025-11-04 312-628-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2025-11-04 312-635-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2025-11-04 312-780-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2025-11-04 312-794-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2025-11-04 312-794-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2025-09-18 312-792-2XXX 2000–2999Assigned VONAGE AMERICA LLC 197D CHICGOZN01 IL
2025-09-12 312-473-9XXX 9000–9999Assigned HD CARRIER LLC 321J CHICGOZN01 IL
2025-09-12 312-879-1XXX 1000–1999Assigned HD CARRIER LLC 321J CHICGOZN01 IL
2025-09-03 312-473-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-09-02 312-449-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-09-02 312-449-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-09-02 312-449-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-09-02 312-449-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-09-02 312-449-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-09-02 312-449-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-09-02 312-449-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-09-02 312-449-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-09-02 312-449-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2025-09-02 312-452-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2025-09-02 312-452-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL

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.