NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

49 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 464
NEW CINGULAR WIRELESS PCS, LLC - IL 43
ONVOY, LLC 4
OPENTACT INC. 1
INTRADO COMMUNICATIONS, LLC 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
2025-11-18 464-278-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-278-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-278-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-278-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-278-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-278-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-278-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-278-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-278-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-278-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-279-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-279-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-279-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-279-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-279-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-279-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-279-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-279-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-279-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-18 464-279-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-11-17 464-277-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SUMMIT IL
2025-11-17 464-277-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SUMMIT IL
2025-11-13 464-264-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OAK LAWN IL
2025-10-09 464-262-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLUEISLAND IL
2025-10-07 464-276-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-10-07 464-276-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-10-07 464-276-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-10-07 464-276-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-10-07 464-276-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-10-07 464-276-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-10-07 464-276-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-10-07 464-276-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-10-07 464-276-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-10-07 464-276-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2025-10-02 464-241-2XXX 2000–2999Assigned ONVOY, LLC 224C CALUMET CY IL
2025-10-02 464-262-6XXX 6000–6999Assigned ONVOY, LLC 224C BLUEISLAND IL
2025-09-22 464-249-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICAGOHTS IL
2025-09-22 464-258-5XXX 5000–5999Assigned ONVOY, LLC 224C CICERO IL
2025-08-19 464-223-5XXX 5000–5999Assigned BOOST SUBSCRIBERCO L.L.C. 490J PEOTONE IL
2025-08-14 464-200-7XXX 7000–7999Assigned ONVOY, LLC 224C LANSING IL
2025-08-14 464-220-4XXX 4000–4999Assigned ONVOY, LLC 224C CRETE IL
2025-08-08 464-256-2XXX 2000–2999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CHICAGOHTS IL
2025-08-08 464-256-6XXX 6000–6999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CHICAGOHTS IL
2025-08-07 464-258-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CICERO IL
2025-08-07 464-258-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CICERO IL
2025-07-10 464-266-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CICERO IL
2025-07-02 464-240-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELLWOOD IL
2025-06-30 464-273-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2025-06-30 464-273-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2025-06-30 464-273-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST 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.