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
2007-09-04 541-537-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ROSEBURG OR
2007-08-31 541-260-9XXX 9000–9999Assigned UNITED STATES CELLULAR - OR 6349 COOS BAY OR
2007-08-31 541-787-5XXX 5000–5999Assigned UNITED STATES CELLULAR - OR 6349 GRANTSPASS OR
2007-08-29 541-647-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEND OR
2007-08-23 541-499-3XXX 3000–3999Assigned METROPCS, INC. 5562 MEDFORD OR
2007-08-23 541-499-4XXX 4000–4999Assigned METROPCS, INC. 5562 MEDFORD OR
2007-08-23 541-778-5XXX 5000–5999Assigned METROPCS, INC. 5562 MEDFORD OR
2007-08-20 541-250-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CORVALLIS OR
2007-08-20 541-250-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CORVALLIS OR
2007-08-20 541-321-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 JUNCTIONCY OR
2007-08-20 541-728-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEND OR
2007-08-02 541-212-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ONTARIO OR
2007-08-02 541-212-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ONTARIO OR
2007-07-18 541-272-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NEWPORT OR
2007-07-18 541-844-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J EUGENE OR
2007-07-12 541-720-4XXX 4000–4999Assigned UNITED STATES CELLULAR - OR 6349 HERMISTON OR
2007-07-09 541-848-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEND OR
2007-07-06 541-279-4XXX 4000–4999Assigned METROPCS, INC. 5562 MADRAS OR
2007-07-06 541-279-5XXX 5000–5999Assigned METROPCS, INC. 5562 MADRAS OR
2007-07-06 541-279-6XXX 6000–6999Assigned METROPCS, INC. 5562 MADRAS OR
2007-07-06 541-315-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K OAKLAND OR
2007-07-06 541-429-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PENDLETON OR
2007-07-06 541-637-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ROSEBURG OR
2007-07-06 541-956-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANTSPASS OR
2007-06-29 541-499-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MEDFORD OR
2007-06-29 541-499-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MEDFORD OR
2007-06-28 541-215-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PENDLETON OR
2007-06-20 541-230-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CORVALLIS OR
2007-06-19 541-274-7XXX 7000–7999Assigned QWEST CORPORATION 9638 KLAMATHFLS OR
2007-06-13 541-637-6XXX 6000–6999Assigned UNITED STATES CELLULAR - OR 6349 ROSEBURG OR
2007-06-13 541-637-7XXX 7000–7999Assigned UNITED STATES CELLULAR - OR 6349 ROSEBURG OR
2007-06-13 541-637-8XXX 8000–8999Assigned UNITED STATES CELLULAR - OR 6349 ROSEBURG OR
2007-06-06 541-207-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 CORVALLIS OR
2007-06-06 541-228-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2007-06-01 541-960-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E ELGIN OR
2007-05-25 541-848-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E BEND OR
2007-05-23 541-626-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UMATILLA OR
2007-05-22 541-861-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MILTONFWTR OR
2007-05-16 541-405-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 LEBANON OR
2007-05-16 541-971-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ALBANY OR
2007-05-15 541-205-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K KLAMATHFLS OR
2007-05-15 541-449-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K STANFIELD OR
2007-05-15 541-701-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HERMISTON OR
2007-05-15 541-879-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WHITE CITY OR
2007-05-08 541-221-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2007-05-07 541-886-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E WALLOWA OR
2007-05-04 541-667-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 HERMISTON OR
2007-05-03 541-728-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEND OR
2007-05-02 541-263-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E ENTERPRISE OR
2007-05-02 541-534-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E IMBLER 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.