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 541
ONVOY, LLC - OR 2
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
2005-02-08 541-394-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 GRASS VLY OR
2005-02-08 541-402-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PARKDALE OR
2005-02-08 541-556-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2005-02-08 541-556-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2005-01-31 541-425-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 GOLD BEACH OR
2005-01-28 541-201-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ASHLAND OR
2005-01-28 541-223-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ALBANY OR
2005-01-27 541-263-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ENTERPRISE OR
2005-01-27 541-418-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 LINCOLN CY OR
2005-01-24 541-306-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEND OR
2005-01-24 541-441-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRANTSPASS OR
2005-01-24 541-526-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 REDMOND OR
2005-01-24 541-982-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 COOS BAY OR
2005-01-18 541-324-3XXX 3000–3999Assigned METROPCS, INC. 5562 MEDFORD OR
2005-01-14 541-215-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PENDLETON OR
2005-01-14 541-215-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PENDLETON OR
2005-01-10 541-306-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BEND OR
2005-01-10 541-538-0XXX 0000–0999Assigned METROPCS, INC. 5562 WHITE CITY OR
2005-01-07 541-285-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2005-01-07 541-285-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2005-01-07 541-326-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MEDFORD OR
2005-01-07 541-326-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MEDFORD OR
2005-01-07 541-326-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MEDFORD OR
2004-12-30 541-326-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MEDFORD OR
2004-12-29 541-359-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 EUGENE OR
2004-12-29 541-598-3XXX 3000–3999Assigned QWEST CORPORATION 9638 BEND OR
2004-12-28 541-228-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2004-12-28 541-778-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MEDFORD OR
2004-12-16 541-310-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PENDLETON OR
2004-12-16 541-310-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PENDLETON OR
2004-12-16 541-412-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BROOKINGS OR
2004-12-09 541-324-4XXX 4000–4999Assigned METROPCS, INC. 5562 MEDFORD OR
2004-12-09 541-460-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MADRAS OR
2004-12-09 541-460-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MADRAS OR
2004-12-09 541-460-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MADRAS OR
2004-12-09 541-531-4XXX 4000–4999Assigned UNITED STATES CELLULAR - OR 6349 MEDFORD OR
2004-12-09 541-531-6XXX 6000–6999Assigned UNITED STATES CELLULAR - OR 6349 MEDFORD OR
2004-12-09 541-531-7XXX 7000–7999Assigned UNITED STATES CELLULAR - OR 6349 MEDFORD OR
2004-12-09 541-531-8XXX 8000–8999Assigned UNITED STATES CELLULAR - OR 6349 MEDFORD OR
2004-12-09 541-531-9XXX 9000–9999Assigned UNITED STATES CELLULAR - OR 6349 MEDFORD OR
2004-12-08 541-226-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GRANTSPASS OR
2004-12-08 541-817-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ROSEBURG OR
2004-12-02 541-225-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2004-12-02 541-778-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MEDFORD OR
2004-12-02 541-778-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MEDFORD OR
2004-11-29 541-610-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BEND OR
2004-11-24 541-306-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEND OR
2004-11-24 541-306-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEND OR
2004-11-16 541-206-5XXX 5000–5999Assigned METROPCS, INC. 5562 EUGENE OR
2004-11-16 541-223-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALBANY OR

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.