NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2005-03-31 503-412-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-03-31 503-412-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-03-31 503-962-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-03-31 503-962-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-03-29 503-214-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 BEAVERTON OR
2005-03-22 503-298-2XXX 2000–2999Assigned QWEST CORPORATION 9638 ASTORIA OR
2005-03-10 503-427-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 STFRD-SNDY OR
2005-03-10 503-427-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 STFRD-SNDY OR
2005-03-10 503-427-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 STFRD-SNDY OR
2005-03-02 503-480-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2005-03-01 503-428-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2005-02-25 503-467-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2005-02-25 503-467-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2005-02-25 503-980-9XXX 9000–9999Assigned DATAVISION COMMUNICATIONS LLC 5511 WOODBURN OR
2005-02-17 503-984-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WOODBURN OR
2005-02-16 503-467-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 PORTLAND OR
2005-02-03 503-442-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-02-03 503-442-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-02-03 503-442-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-02-03 503-442-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-02-03 503-442-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-02-03 503-442-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-02-03 503-442-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-02-03 503-442-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-02-03 503-442-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-02-03 503-442-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-02-03 503-564-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 HOOD LAND OR
2005-02-01 503-213-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2005-02-01 503-214-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2005-01-27 503-428-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2005-01-24 503-342-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CLACKAMAS OR
2005-01-24 503-925-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SHERWOOD OR
2005-01-13 503-868-8XXX 8000–8999Assigned METROPCS, INC. 5562 GRAND IS OR
2005-01-12 503-980-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 WOODBURN OR
2005-01-10 503-547-7XXX 7000–7999Assigned METROPCS, INC. 5562 BEAVERTON OR
2005-01-07 503-367-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2005-01-07 503-367-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2005-01-07 503-428-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2005-01-07 503-428-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2005-01-05 503-980-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 WOODBURN OR
2005-01-04 503-925-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SHERWOOD OR
2005-01-03 503-369-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ST HELENS OR
2004-12-30 503-476-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 NEWBERG OR
2004-12-29 503-343-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CLACKAMAS OR
2004-12-28 503-367-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-12-28 503-367-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-12-28 503-367-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-12-28 503-367-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-12-27 503-396-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ST HELENS OR
2004-12-27 503-489-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J GRESHAM OR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.