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
2007-06-21 503-200-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2007-06-21 503-210-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 CLACKAMAS OR
2007-06-13 503-825-5XXX 5000–5999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4323 SHERWOOD OR
2007-06-13 503-825-6XXX 6000–6999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4323 SHERWOOD OR
2007-06-07 503-200-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 PORTLAND OR
2007-06-06 503-884-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2007-06-05 503-734-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2007-06-05 503-734-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2007-06-01 503-506-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F STFRD-SNDY OR
2007-05-16 503-302-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2007-05-16 503-488-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2007-05-16 503-564-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E HOOD LAND OR
2007-05-16 503-883-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MCMINNVL OR
2007-05-10 503-342-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CLACKAMAS OR
2007-05-09 503-882-3XXX 3000–3999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2007-05-09 503-882-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2007-05-09 503-882-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2007-05-09 503-882-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2007-05-09 503-882-8XXX 8000–8999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2007-05-09 503-919-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2007-05-09 503-919-3XXX 3000–3999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2007-05-07 503-437-9XXX 9000–9999Assigned ONVOY, LLC - OR 750E MCMINNVL OR
2007-05-02 503-290-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 PORTLAND OR
2007-05-02 503-427-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 STFRD-SNDY OR
2007-05-02 503-482-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 STFRD-SNDY OR
2007-05-02 503-482-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 STFRD-SNDY OR
2007-05-02 503-662-1XXX 1000–1999Assigned ONVOY, LLC - OR 750E YAMHILL OR
2007-05-02 503-825-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E SHERWOOD OR
2007-05-02 503-864-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E DAYTON OR
2007-05-02 503-868-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E GRAND IS OR
2007-05-02 503-912-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E GRESHAM OR
2007-05-02 503-924-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E BEAVERTON OR
2007-04-27 503-713-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2007-04-27 503-713-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2007-04-27 503-713-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2007-04-24 503-619-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2007-04-24 503-619-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2007-04-24 503-619-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2007-04-24 503-707-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2007-04-20 503-437-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2007-04-18 503-431-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2007-04-18 503-906-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2007-04-11 503-608-9XXX 9000–9999Assigned METROPCS, INC. 5562 BEAVERTON OR
2007-04-09 503-608-8XXX 8000–8999Assigned METROPCS, INC. 5562 BEAVERTON OR
2007-03-30 503-443-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2007-03-30 503-443-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2007-03-30 503-443-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2007-03-28 503-389-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NORTH PL OR
2007-03-28 503-389-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NORTH PL OR
2007-03-28 503-405-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GRESHAM 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.