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
2016-02-17 541-368-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E CORVALLIS OR
2016-02-17 541-452-0XXX 0000–0999Assigned ONVOY, LLC - OR 750E CORVALLIS OR
2016-02-09 541-305-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FLORENCE OR
2016-02-09 541-340-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 THE DALLES OR
2016-02-09 541-371-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HERMISTON OR
2016-02-09 541-640-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E BEND OR
2016-02-09 541-640-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E BEND OR
2016-02-09 541-669-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LINCOLN CY OR
2016-02-08 541-780-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2016-02-08 541-780-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2016-01-27 541-666-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ALBANY OR
2016-01-27 541-930-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MEDFORD OR
2016-01-26 541-777-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MADRAS OR
2016-01-22 541-666-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ALBANY OR
2016-01-20 541-666-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALBANY OR
2016-01-20 541-666-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALBANY OR
2016-01-20 541-780-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EUGENE OR
2016-01-12 541-360-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CORVALLIS OR
2015-12-29 541-640-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEND OR
2015-12-22 541-329-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BANDON OR
2015-12-22 541-578-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MOSIER OR
2015-12-22 541-800-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STANFIELD OR
2015-12-22 541-802-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OAKLAND OR
2015-12-22 541-827-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHILOQUIN OR
2015-12-21 541-378-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ROSEBURG OR
2015-12-21 541-399-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HOOD RIVER OR
2015-12-21 541-435-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COOS BAY OR
2015-12-17 541-657-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BROWNSVL OR
2015-12-17 541-657-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BROWNSVL OR
2015-12-17 541-670-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ROSEBURG OR
2015-12-16 541-609-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHILOMATH OR
2015-12-16 541-609-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHILOMATH OR
2015-12-16 541-916-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GRANTSPASS OR
2015-12-14 541-674-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CRESWELL OR
2015-12-10 541-809-9XXX 9000–9999Assigned METROPCS, INC. 5562 MILTONFWTR OR
2015-12-09 541-583-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HARRISBURG OR
2015-12-09 541-583-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HARRISBURG OR
2015-12-09 541-658-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CRESWELL OR
2015-12-08 541-780-0XXX 0000–0999Assigned ONVOY, LLC - OR 750E EUGENE OR
2015-12-08 541-780-1XXX 1000–1999Assigned ONVOY, LLC - OR 750E EUGENE OR
2015-12-08 541-780-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E EUGENE OR
2015-12-08 541-819-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NEWPORT OR
2015-12-08 541-841-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MEDFORD OR
2015-12-03 541-254-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BROOKINGS OR
2015-12-03 541-841-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MEDFORD OR
2015-12-02 541-527-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDMOND OR
2015-11-25 541-209-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E JEFFERSON OR
2015-11-25 541-373-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E GOLD BEACH OR
2015-11-25 541-373-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E GOLD BEACH OR
2015-11-25 541-570-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LEBANON 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.