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
2006-02-06 503-734-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-02-06 503-857-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2006-01-25 503-298-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ASTORIA OR
2006-01-25 503-857-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2006-01-25 503-927-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-01-25 503-927-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-01-25 503-927-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-01-25 503-927-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-01-19 503-801-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TILLAMOOK OR
2006-01-19 503-927-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-01-19 503-927-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-01-17 503-270-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 BEAVERTON OR
2006-01-13 503-586-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2006-01-13 503-927-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-01-13 503-927-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-01-12 503-328-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J GRESHAM OR
2006-01-12 503-328-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J GRESHAM OR
2006-01-12 503-427-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J STFRD-SNDY OR
2006-01-04 503-410-8XXX 8000–8999Assigned METROPCS, INC. 5562 ST HELENS OR
2006-01-04 503-840-7XXX 7000–7999Assigned METROPCS, INC. 5562 BEAVERTON OR
2006-01-04 503-840-8XXX 8000–8999Assigned METROPCS, INC. 5562 BEAVERTON OR
2005-12-19 503-428-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2005-12-19 503-428-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2005-12-19 503-569-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2005-12-19 503-593-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-12-19 503-841-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-12-19 503-841-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-12-14 503-562-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2005-12-13 503-593-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-12-12 503-764-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2005-12-12 503-841-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2005-12-12 503-841-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2005-12-08 503-905-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 CLACKAMAS OR
2005-12-07 503-352-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2005-12-07 503-352-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2005-12-07 503-352-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2005-12-07 503-593-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2005-12-05 503-593-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-12-05 503-841-4XXX 4000–4999Assigned METROPCS, INC. 5562 PORTLAND OR
2005-11-30 503-342-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J CLACKAMAS OR
2005-11-30 503-764-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-11-30 503-764-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-11-30 503-764-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-11-30 503-989-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WOODBURN OR
2005-11-29 503-395-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 RAINIER OR
2005-11-29 503-764-6XXX 6000–6999Assigned METROPCS, INC. 5562 PORTLAND OR
2005-11-22 503-989-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WOODBURN OR
2005-11-17 503-549-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2005-11-17 503-549-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2005-11-17 503-549-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON 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.