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
2010-09-07 503-383-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2010-09-03 503-212-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CLACKAMAS OR
2010-09-03 503-277-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2010-09-03 503-420-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F DALLAS OR
2010-09-03 503-530-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2010-09-03 503-583-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F MCMINNVL OR
2010-08-27 503-912-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J GRESHAM OR
2010-08-26 503-567-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F BEAVERTON OR
2010-08-26 503-610-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SHERWOOD OR
2010-08-25 503-894-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2010-08-19 503-384-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2010-08-17 503-840-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J BEAVERTON OR
2010-08-17 503-967-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SALEM OR
2010-08-06 503-688-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2010-08-06 503-688-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2010-08-06 503-688-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2010-08-06 503-688-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2010-08-05 503-218-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F STFRD-SNDY OR
2010-08-05 503-489-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F GRESHAM OR
2010-08-05 503-567-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F BEAVERTON OR
2010-08-05 503-739-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SEASIDE OR
2010-08-05 503-749-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F AUMSVLTRNR OR
2010-08-05 503-902-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F WOODBURN OR
2010-08-04 503-383-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2010-08-04 503-480-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2010-07-23 503-406-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CLACKAMAS OR
2010-07-23 503-486-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J STFRD-SNDY OR
2010-07-21 503-741-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ASTORIA OR
2010-07-15 503-902-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E WOODBURN OR
2010-07-15 503-964-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2010-07-14 503-964-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2010-07-13 503-847-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-07-13 503-893-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-07-13 503-893-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-07-13 503-893-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-07-13 503-893-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-07-13 503-893-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-07-13 503-894-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-07-13 503-894-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2010-07-08 503-739-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEASIDE OR
2010-07-07 503-899-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 NEWBERG OR
2010-06-18 503-741-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ASTORIA OR
2010-06-17 503-272-5XXX 5000–5999Assigned ELTOPIA COMMUNICATIONS LLC - OR 647F GOVENTCAMP OR
2010-06-17 503-395-6XXX 6000–6999Assigned ELTOPIA COMMUNICATIONS LLC - OR 647F RAINIER OR
2010-06-17 503-433-0XXX 0000–0999Assigned ELTOPIA COMMUNICATIONS LLC - OR 647F NORTH PL OR
2010-06-17 503-506-1XXX 1000–1999Assigned ELTOPIA COMMUNICATIONS LLC - OR 647F STFRD-SNDY OR
2010-06-17 503-683-0XXX 0000–0999Assigned ELTOPIA COMMUNICATIONS LLC - OR 647F CLACKAMAS OR
2010-06-17 503-743-5XXX 5000–5999Assigned ELTOPIA COMMUNICATIONS LLC - OR 647F AUMSVLTRNR OR
2010-06-17 503-751-9XXX 9000–9999Assigned ELTOPIA COMMUNICATIONS LLC - OR 647F DALLAS OR
2010-06-17 503-766-1XXX 1000–1999Assigned ELTOPIA COMMUNICATIONS LLC - OR 647F 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.