NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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 503
ONVOY, LLC - OR 4
NEW CINGULAR WIRELESS PCS, LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 1
BANDWIDTH.COM CLEC, LLC - OR 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
2010-03-16 503-388-3XXX 3000–3999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2010-03-10 503-388-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2010-03-05 503-828-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2010-03-03 503-567-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E BEAVERTON OR
2010-03-03 503-858-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2010-03-03 503-858-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2010-03-03 503-858-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2010-03-02 503-893-6XXX 6000–6999Assigned QWEST CORPORATION 9638 PORTLAND OR
2010-03-02 503-893-7XXX 7000–7999Assigned QWEST CORPORATION 9638 PORTLAND OR
2010-02-25 503-877-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E SALEM OR
2010-02-19 503-877-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SALEM OR
2010-02-12 503-354-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 TILLAMOOK OR
2010-02-04 503-877-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2010-02-04 503-877-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2010-02-02 503-987-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCAPPOOSE OR
2010-02-01 503-443-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2010-01-29 503-208-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2010-01-29 503-208-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2010-01-25 503-388-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2010-01-25 503-583-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MCMINNVL OR
2010-01-25 503-902-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WOODBURN OR
2010-01-25 503-967-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E SALEM OR
2010-01-22 503-208-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-01-22 503-208-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-01-22 503-208-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-01-22 503-395-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F RAINIER OR
2010-01-22 503-410-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F ST HELENS OR
2010-01-22 503-476-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F NEWBERG OR
2010-01-22 503-897-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F MILL CITY OR
2010-01-22 503-902-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F WOODBURN OR
2010-01-21 503-217-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SHERWOOD OR
2010-01-21 503-298-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F ASTORIA OR
2010-01-21 503-308-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CLATSKANIE OR
2010-01-21 503-389-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F NORTH PL OR
2010-01-21 503-482-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F STFRD-SNDY OR
2010-01-21 503-482-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F STFRD-SNDY OR
2010-01-21 503-489-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F GRESHAM OR
2010-01-21 503-489-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F GRESHAM OR
2010-01-21 503-619-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 BEAVERTON OR
2010-01-21 503-622-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F HOOD LAND OR
2010-01-21 503-683-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CLACKAMAS OR
2010-01-21 503-683-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CLACKAMAS OR
2010-01-21 503-683-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CLACKAMAS OR
2010-01-20 503-583-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F MCMINNVL OR
2010-01-20 503-877-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SALEM OR
2010-01-20 503-877-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SALEM OR
2010-01-20 503-877-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SALEM OR
2010-01-20 503-877-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SALEM OR
2010-01-19 503-214-1XXX 1000–1999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 BEAVERTON OR
2010-01-12 503-894-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND 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.