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
2014-06-23 541-252-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COOS BAY OR
2014-06-23 541-378-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ROSEBURG OR
2014-06-19 541-204-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F LEABURG OR
2014-06-19 541-305-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 FLORENCE OR
2014-06-17 541-236-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F ROSEBURG OR
2014-06-17 541-257-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CORVALLIS OR
2014-06-17 541-257-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CORVALLIS OR
2014-06-17 541-576-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SILVERLAKE OR
2014-06-12 541-203-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F STATELINE OR
2014-06-03 541-243-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CORVALLIS OR
2014-05-23 541-600-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J EUGENE OR
2014-05-19 541-735-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2014-05-19 541-735-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2014-05-19 541-735-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2014-05-19 541-735-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2014-05-15 541-321-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F JUNCTIONCY OR
2014-05-15 541-371-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F HERMISTON OR
2014-05-09 541-670-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ROSEBURG OR
2014-05-07 541-213-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEND OR
2014-05-07 541-213-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEND OR
2014-05-02 541-314-7XXX 7000–7999Assigned UNITED STATES CELLULAR - OR 6349 HERMISTON OR
2014-04-29 541-391-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ROSEBURG OR
2014-04-14 541-257-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 CORVALLIS OR
2014-04-11 541-259-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 LEBANON OR
2014-04-10 541-631-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ASHLAND OR
2014-04-02 541-371-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 HERMISTON OR
2014-04-02 541-371-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 HERMISTON OR
2014-04-01 541-777-2XXX 2000–2999Assigned WARM SPRINGS TELECOMMUNICATIONS COMPANY - OR 094G MADRAS OR
2014-03-24 541-295-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GRANTSPASS OR
2014-03-24 541-466-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BROWNSVL OR
2014-03-24 541-491-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHEDD OR
2014-03-24 541-560-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PROSPECT OR
2014-03-24 541-594-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CRATERLAKE OR
2014-03-24 541-865-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BUTTEFALLS OR
2014-03-24 541-878-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHADY COVE OR
2014-03-24 541-949-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FISH LAKE OR
2014-03-18 541-213-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEND OR
2014-03-18 541-213-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEND OR
2014-03-18 541-368-0XXX 0000–0999Assigned METROPCS, INC. 5562 CORVALLIS OR
2014-03-18 541-368-1XXX 1000–1999Assigned METROPCS, INC. 5562 CORVALLIS OR
2014-03-18 541-648-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SILETZ OR
2014-03-18 541-735-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2014-03-18 541-846-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PROVOTMPHY OR
2014-03-18 541-905-8XXX 8000–8999Assigned METROPCS, INC. 5562 ALBANY OR
2014-03-18 541-936-5XXX 5000–5999Assigned METROPCS, INC. 5562 ALBANY OR
2014-03-18 541-936-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALBANY OR
2014-03-18 541-981-7XXX 7000–7999Assigned METROPCS, INC. 5562 ALBANY OR
2014-03-17 541-209-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JEFFERSON OR
2014-03-17 541-264-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWPORT OR
2014-03-17 541-304-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PENDLETON 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.