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
2010-06-17 503-770-9XXX 9000–9999Assigned ELTOPIA COMMUNICATIONS LLC - OR 647F CHARBONNEU OR
2010-06-17 503-776-4XXX 4000–4999Assigned ELTOPIA COMMUNICATIONS LLC - OR 647F AURORA OR
2010-06-17 503-854-2XXX 2000–2999Assigned ELTOPIA COMMUNICATIONS LLC - OR 647F DETROIT OR
2010-06-11 503-583-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MCMINNVL OR
2010-06-11 503-964-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2010-06-11 503-964-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2010-06-11 503-964-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2010-05-27 503-410-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ST HELENS OR
2010-05-26 503-688-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2010-05-26 503-688-9XXX 9000–9999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2010-05-24 503-894-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2010-05-24 503-894-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2010-05-20 503-388-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-05-20 503-388-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-05-20 503-404-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F STFRD-SNDY OR
2010-05-20 503-420-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F DALLAS OR
2010-05-20 503-446-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-05-20 503-446-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-05-20 503-446-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-05-20 503-446-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-05-20 503-446-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-05-20 503-446-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-05-20 503-446-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2010-05-20 503-489-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F GRESHAM OR
2010-05-20 503-567-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F BEAVERTON OR
2010-05-20 503-567-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F BEAVERTON OR
2010-05-20 503-567-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F BEAVERTON OR
2010-05-20 503-567-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F BEAVERTON OR
2010-05-20 503-567-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F BEAVERTON OR
2010-05-20 503-610-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SHERWOOD OR
2010-05-20 503-828-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2010-05-20 503-883-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F MCMINNVL OR
2010-05-20 503-967-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SALEM OR
2010-05-20 503-967-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SALEM OR
2010-05-20 503-967-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SALEM OR
2010-05-20 503-967-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SALEM OR
2010-05-10 503-506-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J STFRD-SNDY OR
2010-05-06 503-410-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ST HELENS OR
2010-05-04 503-563-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J STFRD-SNDY OR
2010-04-30 503-388-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-04-23 503-272-2XXX 2000–2999Assigned ASTOUND BROADBAND, LLC - OR 936F GOVENTCAMP OR
2010-04-19 503-893-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2010-04-19 503-893-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2010-04-15 503-967-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SALEM OR
2010-04-08 503-850-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CLACKAMAS OR
2010-04-08 503-900-9XXX 9000–9999Assigned ASTOUND BROADBAND, LLC - OR 936F LYONS OR
2010-04-06 503-899-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 NEWBERG OR
2010-04-01 503-664-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BEAVER OR
2010-03-30 503-567-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2010-03-19 503-983-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM 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.