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
2006-05-18 503-694-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CHARBONNEU OR
2006-05-16 503-689-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2006-05-16 503-689-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2006-05-16 503-689-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2006-05-15 503-523-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-05-15 503-523-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-05-15 503-530-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-05-15 503-602-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2006-05-02 503-210-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CLACKAMAS OR
2006-04-21 503-837-0XXX 0000–0999Assigned ONVOY, LLC - OR 750E DALLAS OR
2006-04-19 503-432-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-04-19 503-710-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WOODBURN OR
2006-04-19 503-907-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 GRESHAM OR
2006-04-19 503-927-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-04-18 503-662-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J YAMHILL OR
2006-04-18 503-747-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2006-04-18 503-747-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2006-04-18 503-747-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2006-04-18 503-747-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2006-04-12 503-339-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2006-04-12 503-339-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2006-04-12 503-899-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBERG OR
2006-04-10 503-339-4XXX 4000–4999Assigned METROPCS, INC. 5562 SALEM OR
2006-04-07 503-487-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J NEWBERG OR
2006-04-07 503-714-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J DAYTON OR
2006-04-07 503-852-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CARLTON OR
2006-04-07 503-857-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J MCMINNVL OR
2006-04-03 503-344-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CLACKAMAS OR
2006-04-03 503-344-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J CLACKAMAS OR
2006-03-29 503-327-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-03-27 503-342-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CLACKAMAS OR
2006-03-20 503-710-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WOODBURN OR
2006-03-15 503-206-0XXX 0000–0999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2006-03-10 503-523-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-03-10 503-523-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-03-07 503-853-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-03-07 503-853-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-03-07 503-853-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-03-07 503-991-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2006-03-01 503-853-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-03-01 503-853-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-03-01 503-853-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-02-28 503-382-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-02-28 503-432-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-02-28 503-432-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-02-28 503-432-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-02-28 503-927-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-02-24 503-898-1XXX 1000–1999Assigned BEAVER CREEK COOPERATIVE TELEPHONE COMPANY - OR 461J REDLAND OR
2006-02-16 503-798-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2006-02-06 503-369-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ST HELENS 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.