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
2003-08-06 503-961-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-08-06 503-961-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-07-11 503-308-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 CLATSKANIE OR
2003-07-11 503-308-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 CLATSKANIE OR
2003-06-23 503-438-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF OREGON, LLC - OR 7537 ST HELENS OR
2003-06-04 503-476-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 NEWBERG OR
2003-06-04 503-476-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 NEWBERG OR
2003-06-04 503-476-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 NEWBERG OR
2003-06-04 503-476-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 NEWBERG OR
2003-05-29 503-438-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ST HELENS OR
2003-05-21 503-562-8XXX 8000–8999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 SALEM OR
2003-05-19 503-473-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2003-05-19 503-473-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2003-05-19 503-473-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2003-05-19 503-473-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2003-05-19 503-473-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2003-05-19 503-562-1XXX 1000–1999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 SALEM OR
2003-05-19 503-562-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 SALEM OR
2003-05-19 503-562-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 SALEM OR
2003-05-19 503-562-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 SALEM OR
2003-05-19 503-562-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 SALEM OR
2003-05-19 503-562-6XXX 6000–6999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 SALEM OR
2003-05-19 503-562-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 SALEM OR
2003-04-22 503-445-8XXX 8000–8999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 PORTLAND OR
2003-04-22 503-473-8XXX 8000–8999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 PORTLAND OR
2003-04-11 503-542-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2003-04-11 503-542-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2003-04-02 503-457-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 TILLAMOOK OR
2003-03-11 503-925-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 SHERWOOD OR
2003-01-16 503-864-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DAYTON OR
2003-01-16 503-868-9XXX 9000–9999Assigned METROPCS, INC. 5562 GRAND IS OR
2003-01-14 503-866-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-01-14 503-866-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-01-14 503-866-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-01-14 503-866-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2002-12-11 503-785-8XXX 8000–8999Assigned QWEST CORPORATION 9638 CLACKAMAS OR
2002-11-21 503-866-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2002-11-21 503-866-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2002-11-21 503-866-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2002-11-21 503-866-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2002-11-07 503-453-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2002-11-07 503-453-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2002-11-07 503-453-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2002-11-07 503-453-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2002-11-07 503-453-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2002-11-07 503-453-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2002-11-07 503-484-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2002-11-07 503-484-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2002-11-07 503-484-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2002-10-16 503-419-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND 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.